2011 MACK GU Recalls (5)

Campaign:
10V404000 on 09/12/2010
Component:
Service brakes, air
Manufactured:
10/21/2007 - 06/29/2010
Affected:
369
Defect:
Mack is recalling certain model year 2008 through 2011 gu and mru model vehicles manufactured with a front tow glad hand option. the actuation and release timing of the vehicles exceeds the limit which fails to conform to the requirements of federal motor vehicle safety standard no. 121, "air brake systems."
Consequence:
If the brakes do not perform as they should, a vehicle crash could occur.
Correction:
Mack will notify owners and repair the vehicle free of charge. the safety recall began on february 1, 2011. owners may contact mack at 1-877-800-4945.
Notes:
Mack's recall campaign number is sc0345.owners may also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (tty 1-800-424-9153), or go to <a href=http://www.safercar.gov>http://www.safercar.gov</a> .
Campaign:
11V272000 on 05/05/2011
Component:
Service brakes, air:slack adjusters:automatic
Manufactured:
10/14/2010 - 01/30/2011
Affected:
1,524
Defect:
Mack trucks is recalling certain model year 2011-2012 chu, cxu, gu, leu and mru trucks manufactured from october 15, 2010, through january 31, 2011, and equipped with gunite automatic slack adjusters. due to an incomplete "knitting" of the iron at the time of casting, inadequate structural integrity of the slack adjuster housing can occur, which could cause the housing to break at the handle under normal operating loads.
Consequence:
Slack adjusters with this flow notch could crack under normal braking conditions causing loss of braking which could result in a vehicle crash.
Correction:
Mack trucks will notify owners and dealers will replace the subject slack adjusters free of charge. the safety recall began on august 24, 2011. owners may contact mack trucks at 1-800-528-6586.
Notes:
Owners may also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (tty 1-800-424-9153), or go to <a href=http://www.safercar.gov>http://www.safercar.gov</a> .
Campaign:
11V292000 on 05/22/2011
Component:
Electrical system:battery:cables
Manufactured:
09/11/2007 - 04/07/2011
Affected:
771
Defect:
Mack trucks is recalling certain model year 2008-2011 gu heavy trucks manufactured from september 12, 2007, through april 8, 2011, with a four battery cable design. as a result of the routing and clipping used, the battery cables may come into contact with frame hardware, which, as a result of chafing, may cause the insulation to become worn to a point where a short occurs.
Consequence:
A short can potentially cause a vehicle fire.
Correction:
Dealers will re-route the battery cables and replace the cables if chafing has occurred. this service will be performed free of charge. the safety recall began on july 11, 2011. owners may contact mack trucks at 1-800-866-1177.
Notes:
Mack's safety recall no. sc0354.owners may also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (tty 1-800-424-9153), or go to <a href=http://www.safercar.gov>http://www.safercar.gov</a> .
Campaign:
14V078000 on 02/27/2014
Component:
Electrical system
Manufactured:
06/15/2009 - 07/07/2011
Affected:
70,208
Defect:
Mack trucks, inc. (mack) notified the agency on february 20, 2014, that they are recalling certain model year 2010-2012 chu, cxu, gu and td vehicles manufactured from june 16, 2009, through july 8, 2011. while continuing to research the scope of the issue, mack expanded the recall on november 18, 2014 to include certain model year 2008-2009 and 2013-2014 chu, cxu, gu and td vehicles manufactured from june 16, 2009, through july 8, 2011. having completed its investigation, mack once again expanded the recall during february 2015 to include an additional 53,780 vehicles from model years 2007 and 2015. the recall now covers model year 2007-2015 includes chu, cxu, gu and td vehicles produced october 13, 2006, through october 3, 2014. in the affected vehicles, the electronic power distribution module (epdm) may be contaminated from water leaks in, and around, the windshield. if exposed to water leaks, contaminants such as road salts may deposit on the epdm.
Consequence:
Deposits of contaminants may result in the circuits being bridged, creating a high resistance short, increasing the risk of a fire.
Correction:
Mack has notified owners, and dealers will inspect the epdm. if contamination has occurred, dealers will replace the epdm and address the leak, free of charge. owners of model year 2010-2012 chu, cxu, gu and td vehicles were initially notified april 24, 2014. owners affected by the recall expansions were notified in february 2015. owners may contact mack trucks at 1-336-393-2000. mack's number for this recall is sc0375.
Notes:
Owners may also contact the national highway traffic safety administration vehicle safety hotline at 1-888-327-4236 (tty 1-800-424-9153), or go to www.safercar.gov.
Campaign:
14V208000 on 04/22/2014
Component:
Exterior lighting:turn signal:flasher unit
Manufactured:
02/27/2006 - 11/07/2013
Affected:
44,047
Defect:
Mack trucks inc. (mack) is recalling certain model year 2010-2014 chu, cxu, and mru, 2007 ct and cv, 2008-2014 gu, and 2011-2014 leu, and td trucks manufactured february 28, 2006, through november 8, 2013, and equipped hamsar electronic flasher. the hazard warning lights may fail.
Consequence:
A failure of the hazard warning lights could reduce the trucks visibility, increasing the risk of a crash.
Correction:
Mack will notify owners, and dealers will replace the electronic flasher unit, free of charge. the recall will begin by mid-june 2014. interim letters went out to owners on june 23, 2014. the recall began on july 25, 2014. owners may contact mack customer service at 1-866-298-6586. mack's number for this recall is sc0379.
Notes:
Owners may also contact the national highway traffic safety administration vehicle safety hotline at 1-888-327-4236 (tty 1-800-424-9153), or go to www.safercar.gov.

2011 MACK GU TSBs (148)

Bulletin:
FSB-234-009
Component:
071120 fuel system, gasoline:storage:tank assembly:mounting
Summary:
Mack truck: fuel tank mounting. fuel tank straps over time may lose torque and allow the fuel tank to rotate. when this occurs, the filler neck can become inaccessible and difficult to fill the tank with fuel. models chu, cxu, gu, td.
Bulletin:
FSB-851-007
Component:
220000 seats
Summary:
Mack truck: rear trim panel wear plate, installation. model chassis equipped with high back or mid back seats, the seat back can rub and wear through the rear trim panel. does not apply to chassis equipped with sears brad seats. models c
Bulletin:
SP-284-027
Component:
118000 electrical system: software
Summary:
Mack truck: engine ecm and acm software updates. enhancements are available for the engine control module (ecm) and aftertreatment control module (acm). does not apply to mack trucks australia. models mru, leu, gu, chu, cxu. no model y
Bulletin:
TB-284-021
Component:
061000 engine and engine cooling:engine
Summary:
Mack: engine ecu reprogramming. the mack mp7 and mp8 with multiple engine enhancements will have new software. the egr mass flow, and aftertreatment doser and nox sensor are included in the enhancement. *pe
Bulletin:
SP-645-641
Component:
015200 steering:hydraulic power assist:hose, piping, and connections
Summary:
Mack: power steering hose, replacement. a blue silicone heater hose was incorrectly substituted and installed on return side of power steering system for power steering cooler during production. need to replace hoses and power steering f
Bulletin:
SB-258-021-2
Component:
061200 engine and engine cooling:engine:diesel
Summary:
Mack: diesel exhaust fluid pump, repair. on certain trucks, repairs has been authorized on diesel exhaust fluid (def) pump. the only exception for this procedure is to replace heating bracket on def pump which is not a serviceable compon
Bulletin:
SB-810-002
Component:
061200 engine and engine cooling:engine:diesel
Summary:
Mack truck: cab/dashboard panel cracks may form due to excessive cab flexing during extreme use of the trucks. *rm
Bulletin:
SB-465-001
Component:
355200 equipment:other:owners/service/other manual
Summary:
Mack trucks: there are new revised torque procedures to prevent the bull gear mounting screws from loosening. *rm
Bulletin:
PI-0695
Component:
102000 power train:manual transmission
Summary:
Mack truck: the oil slinger threads on the input shaft of the transmission were threaded incorrectly and could cause leakage in the area. *rm
Bulletin:
SB-373-010
Component:
046000 service brakes, air:antilock
Summary:
Mack trucks: the clutch pedal can rub agains the anti-lock brake harness causing the malfunction light to go on. *rm
Bulletin:
SB-214-024
Component:
063000 engine and engine cooling:exhaust system
Summary:
Mack trucks: if there is a failed outer valve spring there is a replacement procedure. *rm
Bulletin:
SB-263-046
Component:
062200 engine and engine cooling:cooling system:fan
Summary:
Mack: fan rings are cracking during extreme service. *rm updated 9/7/11. *pe
Bulletin:
SP-284-028
Component:
061200 engine and engine cooling:engine:diesel
Summary:
Mack truck: there is a software update. *rm
Bulletin:
SB-262-008
Component:
060000 engine and engine cooling
Summary:
Mack trucks: there is a new thermostat seal and cover to prevent coolant leakage. *rm
Bulletin:
SP-252-002
Component:
063140 engine and engine cooling:exhaust system:emission control:catalytic convertor
Summary:
Mack: procedure to fix the an insulation blanket in the exhaust system that can deteriorate over time. *rm updated 9/12/11. *pe
Bulletin:
SP-252-001
Component:
063200 engine and engine cooling:exhaust system:manifold/header/muffler/tail pipe
Summary:
Mack: procedure to fix the an insulation blanket in the exhaust system that can deteriorate over time. *rm updated 9/12/11. *pe
Bulletin:
SP-652-006
Component:
980000 unknown or other
Summary:
Mack trucks: torque rod to mounting bracket bolts were installed incorrectly. the bolts were installed in an opposing manner. *rm
Bulletin:
SP-218-001
Component:
060000 engine and engine cooling
Summary:
Mack trucks: there are four missing bolts in the engine frame and mount. *rm updated on 4/22/2013. *kb
Bulletin:
FSB-293-011
Component:
062300 engine and engine cooling:cooling system:hose
Summary:
Mack trucks: there are new egr outlet hose clamps. *rm
Bulletin:
FSB-258-026
Component:
063140 engine and engine cooling:exhaust system:emission control:catalytic convertor
Summary:
Mack trucks: the location of the nitrous oxyde sensor and piping around it has been changed to protect it from moisture damage if water enters the exhaust. *rm
Bulletin:
FSB-491-029
Component:
980000 unknown or other
Summary:
Mack trucks: there are cracks in a steel oil tube that can lead to leaking. *rm updated 2/21/12. *pe
Bulletin:
SP-430-001
Component:
102200 power train:manual transmission:floor shift assembly
Summary:
Mack trucks: the transmission shift instruction label has been updated. *rm
Bulletin:
FSB-370-001
Component:
111100 electrical system:battery:cables
Summary:
Mack trucks: the diagnostic connector may become loose. information on replacement of the diagnostic retainer clip. *rm
Bulletin:
SP-284-030
Component:
061000 engine and engine cooling:engine
Summary:
Mack trucks: there are engine ecm software updates. *rm
Bulletin:
SP-372-010
Component:
115000 electrical system:fuses and circuit breakers
Summary:
Mack trucks: the fuse identification decal is being corrected. *rm
Bulletin:
FSB-465-002
Component:
105500 power train:driveline:differential unit
Summary:
Mack: there are new bull gear mounting fastener torque procedures. *rm updated 2/21/12. *pe
Bulletin:
SP-365-001
Component:
101100 power train:clutch assembly:pedal/linkage
Summary:
Mack: clutch operation error prevents starter engagement unless pedal is fully depressed. *rm
Bulletin:
FSB-233-004
Component:
072100 fuel system, gasoline:delivery:fuel pump
Summary:
Mack truck: there is fuel leakage at tandem fuel pump. the replacement of fuel pump will not correct weep hole leakage of fluid leak. chp, ctp, cxp, chu, cxu, gu, leu, mru, td, cmm, cmh models. *pe
Bulletin:
FSB-844-003
Component:
132000 visibility:glass, side/rear
Summary:
Mack truck: passenger door peep window is loosening from door. this may result in the window butyl tape softening because of high temperatures. *pe
Bulletin:
PI-0746
Component:
061200 engine and engine cooling:engine:diesel
Summary:
Mack trucks: on certain trucks (chu, cxu gu td), all aftertreatment diesel exhaust fluid (def) coolant hoses are to be replaced. *pe
Bulletin:
FSB-258-029
Component:
061320 engine and engine cooling:engine:other fuel types:turbo-charger
Summary:
Mack trucks: software update installation of engine turbocharger compressor bypass valve kit for the engine control module (ecm). *pe
Bulletin:
FSB-258-030
Component:
061200 engine and engine cooling:engine:diesel
Summary:
Mack truck: between aftertreatment hydrocarbon dosing module initial design and boss on mp8 engine, an interference was discovered. it prevents bracket and aftertreatment hydrocarbon dosing module from mounting flush to surface of engin
Bulletin:
FSB-261-032
Component:
980000 unknown or other
Summary:
Mack truck: expansion tanks may have persistent coolant leaks that requires inspection. examine expansion tank for burn hole/mark under pressure cap that enables hot coolant to enter expansion area. models chu, cxu, gu and td. *pe
Bulletin:
FSB-364-032
Component:
118000 electrical system: software
Summary:
Mack truck: trucks will be reprogram with the latest software version of vehicle electronic control unit after experiencing lost of dst2 and the chassis id. *pe
Bulletin:
PI-0752
Component:
015100 steering:hydraulic power assist:pump
Summary:
Mack truck: on certain trucks, there is a loss of speed (low) assist. the pump flow and pressure must be tested before replacing tandem pump assembly. *pe
Bulletin:
PI-0759
Component:
105500 power train:driveline:differential unit
Summary:
Mack truck: on certain truck chassis, there may be possible damage to components cause by loosening of the joint and noise during operation, on the bull gear mounting bolts. *pe
Bulletin:
PI-0760
Component:
061200 engine and engine cooling:engine:diesel
Summary:
Mack truck: on certain vehicles, the aftertreatment diesel exhaust fluid (def) solenoid valve was incorrectly mounted backwards. this causes coolant to lift valve seat and flow continuously, overheating and possibly illuminating indicato
Bulletin:
FSB-652-004-1
Component:
022520 suspension:rear:axle:non-powered axle assembly
Summary:
Mack: torque rod replacement on front rear axle. *js updated 5/9/12. *pe
Bulletin:
FSB-258-031
Component:
071120 fuel system, gasoline:storage:tank assembly:mounting
Summary:
Mack: on certain mack vehicles built before 2/13/2012, the front chassis to urea tank connection, located on the side of the def tank may rub mounting bracket or not stay secured. *js
Bulletin:
FSB-258-032
Component:
071110 fuel system, gasoline:storage:tank assembly:filler pipe and cap
Summary:
Mack: the aftertreatment diesel exhaust fluid (def) tank filler neck is being replaced with an improved filler neck . *pe updated 5/11/12. *pe
Bulletin:
PI0783
Component:
020000 suspension
Summary:
Mack trucks: frame flange contacting suspension crossmember. certain mack models may have contact issues between the frame rails and cross member. this contact can cause a side loading condition to the frame. *js
Bulletin:
FSB-255-023
Component:
061000 engine and engine cooling:engine
Summary:
Mack trucks: severe fretting damage of the engine variable geometry turbocharger actuator (engine vgt actuator) harness and turbine shaft speed sensor (tss) connectors may cause an unreliable signal to the engine vgt actuator. also include
Bulletin:
FSB-212-002
Component:
061000 engine and engine cooling:engine
Summary:
Mack trucks: oil seepage at flywheel housing. this problem has already been solved in production, but the production solution is not compatible with previous generation flywheel housings. *js
Bulletin:
FSB-234-014-1
Component:
091100 fuel system, other:storage:tank assembly
Summary:
Mack: on the right side of truck, is the mounted stanchion exhaust bracket and fuel vent lines, which the fuel tank ventilation filter is added. models chu, cxu, gu, td, mp7, mp8, mp10, us07, us10. model years 2008-2012. *pe
Bulletin:
FSB-255-024-03
Component:
061320 engine and engine cooling:engine:other fuel types:turbo-charger
Summary:
Mack: an unreliable signal to engine vgt actuator from engine variable geometry turbocharger (vgt) actuator harness that has severe fretting damage, the connector pin and socket contacts should be replaced. *pe updated 9/17/12.
Bulletin:
PI-0780
Component:
022144 suspension:rear:springs:leaf spring assembly:u-bolt, leaf spring to axle
Summary:
Mack: during extreme downward articulation of rear axle, the air spring may separate at mounting bell. *pe
Bulletin:
PI-0781
Component:
060000 engine (pws)
Summary:
Mack: due to fretting of connector pins in engine vgt actuator connector, a new mounting arrangement has been developed and relocation of engine vgt actuator connector. models chu, cxu, gu, mru, mp8. *pe updated 7/31/12.
Bulletin:
PI-0789
Component:
021231 suspension:front:springs:air suspension:lines and fittings
Summary:
Mack truck: information regarding the sleeper cab suspension leveling valve bracket that was installed incorrectly. also, the support bracket for air spring, incorrectly mounted on frame, causing cab shock to extend fully when air sprin
Bulletin:
FSB-258-033
Component:
061120 engine and engine cooling:engine:gasoline:turbo-charger
Summary:
Mack trucks: engine tubocharger compressor bypass valve, airline routing. this document covers the procedure for routing the flexible air line around the front of the engine if the existing steel air line fail. *js
Bulletin:
FSB-293-007
Component:
091130 fuel system, other:storage:tank assembly:pressure relief devices
Summary:
Mack trucks: egr differential pressure sensor pin fretting. severe fretting damage of the engine exhaust gas recirculation differential pressure sensor's (egr differential pressure sensor) connector may cause an unreliable signal to the sen
Bulletin:
FSB-372-011
Component:
125000 exterior lighting:brake lights
Summary:
Mack trucks: four way flasher abs fault. certain vehicles equipped with a webb solid state flasher, built from jan. 1, 2010 to june 29, 2012 may experience an active abs fault when the 4 way flasher is enabled. *js
Bulletin:
FSB-371-043-1
Component:
114000 electrical system:wiring
Summary:
Mack truck: due to vehicle electronic control unit (vecu) output wire pt02, the circuit cb7a is in wrong cavity location, causing pt02 (power take off) function not working correctly. *pe
Bulletin:
PI-0795
Component:
061200 engine and engine cooling:engine:diesel
Summary:
Mack truck: aftertreatment diesel particulate filter (dpf) inlet pipe may possibly exhibit an exhaust leak. to improve sealing function of dpf inlet pipe, the dpf inlet pipe flange was modified. model gu. model years 2011-12. *
Bulletin:
PI-0796
Component:
063130 engine and engine cooling:exhaust system:emission control:gas recirculation valve (egr valve)
Summary:
Mack truck: information provided regarding modification of egr valve on engines and removal of poppet shaft end cap o rings. models chu, cxu, gu, leu, mru. no model years listed. *pe
Bulletin:
PI-0801
Component:
091100 fuel system, other:storage:tank assembly
Summary:
Marck truck: information regarding two upper huck bolts for fuel tank j bracket and aftertreatment control module (acm). to provide necessary clearance, if interference exists, cut off end of huck bolts and remove acm. models gu. no mo
Bulletin:
PI-0798
Component:
022400 suspension:rear:shock absorber
Summary:
Mack trucks: information on replacement procedures for the slack adjuster control arm and suspension shock absorber interference on rear/rear drive axle. model gu. no model years listed. *pe
Bulletin:
PI-0767
Component:
021500 suspension:front:control arm
Summary:
Mack trucks: slack adjuster control arm. haldex slack adjusters and ridewell suspension may exhibit a condition which allows the slack adjuster control arm to make contact with the ridewell suspension walking beam during steep suspension ar
Bulletin:
PI-0812
Component:
022000 suspension:rear
Summary:
Mack trucks: rear suspension adjustment washers. replacement of the suspension adjustment washers is required. *js
Bulletin:
PI-0815
Component:
020000 suspension
Summary:
Mack trucks: rear suspension hardware torque. bolts are loose or incorrectly torqued on the primaax suspension. *js updated 07/18/2013 *js
Bulletin:
FSB-371-044
Component:
111100 electrical system:battery:cables
Summary:
Mack truck: torque issue and material may be causing battery cable clamps to crack or break. truck needs to be inspected to determine how many clamps are cracked or broken. model 2010-2012 chu, cxu, gu, leu, mru, td. *pe
Bulletin:
FSB-371-045
Component:
111100 electrical system:battery:cables
Summary:
Mack truck: regarding the breaking or cracking, at starter solenoid stud, of 90 degree positive battery cable lug; the lug was bent at time of assembly, and engine vibrates, causing termination of terminal to weaken. models cxu, gu. mod
Bulletin:
FSB-364-035
Component:
126200 exterior lighting:turn signal:switch
Summary:
Mack trucks: new switch mounting bracket was developed to replace existing turn signal switch mounting bracket, due to contact between switch fingers and sleeping shaft, that caused switch operation to improperly cancels itself. model ch
Bulletin:
FSB-221-010
Component:
060000 engine (pws)
Summary:
Mack trucks: low oil pressure. stored dtc spn 100 fmi 1, during long hard pull conditions. *js
Bulletin:
FSB-364-036
Component:
110000 electrical system
Summary:
Mack truck: flashers are to be removed due to durability issues. *js
Bulletin:
FSB-873-015
Component:
353600 equipment:air conditioner
Summary:
Mack trucks:due to excessive moisture in the climate unit, some vehicles may develop a blower motor failure. *js
Bulletin:
FSB-413-001
Component:
101000 power train:clutch assembly
Summary:
Mack trucks: the air assisted clutch cable on some vehicles may fray at the clevis. *js
Bulletin:
FSB-284-047
Component:
114000 electrical system:wiring
Summary:
Mack: on some trucks, oil contamination into engine wire harness, may be from oil level sensor failure and an anti wicking pigtail splice kit is available. model chu, cxu, gu, leu, mru, td. no years listed. *pe
Bulletin:
FSB-831-002
Component:
162310 structure:body:door:hinge and attachments
Summary:
Mack: the door stop bracket will fail, on some trucks, due to an over extension of door, but a new door design assembly is available. model chu, cxu, gu, td. no years listed. *pe
Bulletin:
FSB-373-019
Component:
103000 power train:automatic transmission
Summary:
Mack: due to supplier manufacturing issue with connector, some trucks may experience multiple open circuits in 31 way transmission connector and would to be inspected and if needed, repaired and replaced. model 2011-2013 chu, cxu, gu, td.
Bulletin:
FSB-512-002
Component:
045000 service brakes, air:disc
Summary:
Mack: air disc brake experiencing thermal overload condition that over adjustment of normal pad wear compensation that maintains running clearance between brake pad and rotor and reduces running clearance below desired level. model chu, c
Bulletin:
FSB-413-003
Component:
101000 power train:clutch assembly
Summary:
Mack: on some trucks, more leg and knee room was provided for operator comfort due to air operated clutch assist system designed to reduce clutch pedal effort by 20% and clutch pedal travel by 2' (50.8mm). model chu, ctp, cxp, cxu, gu. n
Bulletin:
FSB-284-044
Component:
061200 engine and engine cooling:engine:diesel
Summary:
Mack trucks: under certain conditions, some trucks may have experience regeneration service failures, that include higher turbocharger wheel speed, higher boost pressure, high engine load, uneven engine speed and low t2 temperatures on eng
Bulletin:
FSB-561-023
Component:
062300 engine and engine cooling:cooling system:hose
Summary:
Mack: fittings for current air compressor coolant hoses are not the same size at each end and incompatibility of hose inside diameter and compressor fitting size caused compressor hoses to come loose or blow out air compressor fittings. m
Bulletin:
FSB-284-044
Component:
060000 engine (pws)
Summary:
Mack: under certain conditions, higher than expected turbocharger wheel speed, uneven engine speed, low t2 temperatures, high engine load, may have regeneration service failures. model cxu, gu. no years listed. *pe
Bulletin:
FSB-313-005
Component:
111000 electrical system:battery
Summary:
Mack trucks: improvement was made for protection for stackable batteries from environment to prevent premature battery corrosion within the battery box. model 2010-2013 gu. *pe
Bulletin:
FSB-284-048
Component:
060000 engine (pws)
Summary:
Mack truck: due to oil contamination into engine wire harness, main oil gallery pressure sensor or piston cooling jet pressure sensor has failed and new anti wicking jumper harness is available to stop oil from wicking back and causing dam
Bulletin:
FSB-234-019
Component:
071210 fuel system, gasoline:storage:auxillary tank:selector devices
Summary:
Mack truck: mounted outside of frame rail, is new fuel tank ventilation filter mounting sleeve, using fuel tank j bracket huck fasteners and to increase protection against fuel injector tip erosion. model chu, cxu, gu, td. *pe
Bulletin:
FSB-593-013
Component:
350000 equipment
Summary:
Mack truck: the grade gripper feature, on some trucks, are prone to harsh environments with internal contamination, caused by build up of grime, salt, road debris and other contaminants. model chu, cxu, gu, td. *pe
Bulletin:
FSB-234-018
Component:
091100 fuel system, other:storage:tank assembly
Summary:
Mack truck: to increased protection against fuel injector tip erosion, a new fuel tank ventilation filter was implemented, and mounts on outside of frame rail, using fuel tank j bracket huck fasteners. model chu, cxu, gu, td.
Bulletin:
PI-0845
Component:
060000 engine (pws)
Summary:
Mack: when suspension is left dumped, no warning light, road speed limit or buzzer due to software in vehicle electronic control unit (vecu) is not supporting vendor engines and needs reprogramming. model 2011-2013 gu, cxu.
Bulletin:
PI-364-845
Component:
060000 engine (pws)
Summary:
Mack: when suspension, on some trucks, is left dumped, there are no warning light, buzzer or road speed limit, due to vehicle electronic control unit (vecu) software fails to support vendor engines regarding this function. model gu, cxu.
Bulletin:
FSB-511-009
Component:
034420 service brakes, hydraulic:foundation components:drum:shoes/linings
Summary:
Mack: brake shoes protrudes beyond brake drum and can be resolved by installing brake shoes 152mm (6.0 in) and wide brake drums 18mm (7.0 in). model 2011-2014 chu, cxu, gu, td. *pe
Bulletin:
FSB-511-002
Component:
034420 service brakes, hydraulic:foundation components:drum:shoes/linings
Summary:
Mack: the protrusion of brake shoes beyond brake drum is being replaced with new 152mm (6.0 in) brakes shoes, 178 mm (7.,0 in) wide brake drums on some trucks. model 2011-2014 chu, cxu, gu, td. *pe
Bulletin:
FSB-364-037
Component:
110000 electrical system
Summary:
Mack: when the output from the vecu gets shorted out to gnd, there is no warning and causes 5th wheel to slide without activating 5th wheel slide switch and needs to be reprogram. model 2010-2014 chu, cxu, gu, td. *pe
Bulletin:
PI0861
Component:
101000 power train:clutch assembly
Summary:
Summary to be provided on a future date.
Bulletin:
SC0398
Component:
030000 brakes (pws)
Summary:
Brake chamber replacement recall.
Bulletin:
FSB 221-010
Component:
061200 engine and engine cooling:engine:diesel
Summary:
Diagnostic trouble codes (dtcs), low oil pressure, cxu, gu, leu, mru.
Bulletin:
FSB873-020
Component:
350000 equipment
Summary:
Hvac flange, installation, chu, cxu, gu, td.
Bulletin:
FSB 371-045
Component:
111100 electrical system:battery:cables
Summary:
Battery cable lug, failure
Bulletin:
FSB 513-001
Component:
031100 service brakes, electric
Summary:
Brake electronic control unit (ecu), reprogramming (mid 136) certain mack chu, cxu, and gu trucks equipped with the basic esp package (zmx-a1x), and built between january 1, 2010 and november 9, 2014, may activate an mid 136 anti-lock brake
Bulletin:
FSB 511-008
Component:
030000 brakes (pws)
Summary:
Brake drum, replacement (steer axle) some mack cxu, chu, gu, and td trucks built between 08/29/2011 and 06/30/2014, equipped with a mack 14.6k steer axle, unitized hub, and 152 mm (6.0 in) wide meritor brake shoes can show signs of brake sh
Bulletin:
FSB 511-009
Component:
044000 service brakes, air:drum
Summary:
Brake drum, replacement (steer axle) some mack cxu, chu, gu, and td trucks built between 08/29/2011 and 06/30/2014, equipped with a mack 14.6k steer axle, unitized hub, and 152 mm (6.0 in) wide meritor brake shoes can show signs of brake sh
Bulletin:
FSB 371-044
Component:
111000 electrical system:battery
Summary:
Battery cable mounting clamps, may experience the battery cable clamps breaking or cracking.
Bulletin:
PI 0767
Component:
020000 suspension
Summary:
Certain gu model chassis' equipped with haldex slack adjusters and ridewell suspension with build dates between february 1 and march 24, 2010, may exhibit a condition which allows the slack adjuster control arm to make contact with the ride
Bulletin:
FSB 217-004
Component:
060000 engine (pws)
Summary:
Oil pan sealing ring, replacement. some mack vehicles equipped with mp8 engines built since january 2010 report oil leaking at the drain plug insert in the 13l plastic oil pan (part number 21368390) due to o-ring material degradation. if o
Bulletin:
FSB 221-010
Component:
060000 engine (pws)
Summary:
Diagnostic trouble codes (dtcs), low oil pressure. during long hard pull conditions, diagnostic trouble codes (dtc) spn 100 fmi 1 or p052400 can log, or engine shut down may occur on certain high mileage mack cxu, gu, leu and mru vehicles
Bulletin:
FSB 593-014
Component:
030000 brakes (pws)
Summary:
Grade gripper quick release valve, replacement. on some mack chu, cxu, and gu trucks built between 04/31/2008 and 01/05/2015, and equipped with the grade gripper function may experience a slow release of the trailer's service brakes. addit
Bulletin:
293-027
Component:
062000 engine and engine cooling:cooling system
Summary:
Egr mass flow rate low. this bulletin is released to address high counts of diagnostic trouble code (dtc) spn 2659 fmi 18 or p0401 only during normal to high load driving conditions on vehicles assembled between january 2010 and december 2
Bulletin:
FSB 561-023
Component:
060000 engine (pws)
Summary:
The incompatibility of hose id and compressor fitting size has caused the compressor hoses to come loose/blow out from the air compressor fittings.
Bulletin:
FSB 593-013
Component:
103000 power train:automatic transmission
Summary:
Grade gripper solenoid, replacement. on some mack chu, cxu, gu, and td truck models built between 04/31/2008 and 05/11/2015, the solenoid valve for the grade gripper feature is prone to internal contamination in harsh environments.
Bulletin:
FSB 253-002
Component:
060000 engine (pws)
Summary:
Engine brake loss. certain euro 4 mack vehicles built from january 14, 2010 to february 15, 2014 may experience engine brake loss in top gear. check the engine ecu dataset 2 part number and compare to the chart below.
Bulletin:
PI 0767
Component:
020000 suspension
Summary:
Certain gu model chassis' equipped with haldex slack adjusters and ridewell suspension with build dates between february 1 and march 24, 2010, may exhibit a condition which allows the slack adjuster control arm to make contact with the ride
Bulletin:
FSB 371-046
Component:
160000 structure
Summary:
Frame rail ground stud, on certain mack trucks built from 01/01/2010 to 10/7/2013 the main ground stud, located on the frame rail behind the battery box, may have been improperly torqued. this improper torque may have allowed corrosion inhi
Bulletin:
FSB 371-047
Component:
110000 electrical system
Summary:
Power wires, rerouting, certain mack chu, cxu, gu, and td truck models built between 01/01/07 and 10/22/13, utilizes two (red) power wires that route from the bussed electrical center (bec) and behind the radio. the (red) power wires could
Bulletin:
FSB 722-002
Component:
030000 brakes (pws)
Summary:
Interference between the brake lining and the spring cap was discovered on some mack chu, cxu, gu, td, leu, mru trucks equipped with 203 mm (8 in) rear drum brakes and camelback rear suspension.
Bulletin:
SC0398
Component:
030000 brakes (pws)
Summary:
Brake chamber replacement recall
Bulletin:
FSB 593-013
Component:
118500 electrical system: integrated trailer brake control
Summary:
On some mack chu, cxu, gu, and td truck models built between 04/31/2008 and 05/12/2014, the solenoid valve for the grade gripper feature is prone to internal contamination in harsh environments. the internal contamination of the solenoid va
Bulletin:
FSB593013
Component:
353000 equipment:electrical
Summary:
"grade gripper solenoid, replacement. on some mack chu, cxu, gu, and td truck models built between 04/31/2008 and 05/12/2014, the solenoid valve for the grade gripper feature is prone to internal contamination in harsh environments. the i
Bulletin:
FSB 371-048
Component:
012000 steering:column
Summary:
Cab harness insulation, installation. cab wiring harness may experience chafing.
Bulletin:
FSB 364-037
Component:
118000 electrical system: software
Summary:
Vehicle electronic control unit (vecu), reprogramming, 5th wheel slide.
Bulletin:
FSB 364-037
Component:
117000 digital instrument panel
Summary:
Vehicle electronic control unit (vecu), reprogramming fifth wheel slide. on certain mack models, built between 09/04/2010 and 08/15/2014, with an air slide 5th wheel, there will be no warning when the output from the vecu gets shorted to g
Bulletin:
FSB 284-048
Component:
060000 engine (pws)
Summary:
Some mack vehicles with mp engines built between january 2004 and january 2013 may experience a main oil gallery pressure sensor or piston cooling jet pressure sensor failure that leads to oil contamination into the engine wire harness.
Bulletin:
FSB 392-003
Component:
353400 equipment:electrical:radio/tape deck/cd etc.
Summary:
Radio replacement, some mack models built between june 28, 2010 to february 10, 2012, may experience a lock up or freeze issue with the radio.
Bulletin:
FSB 593-013A
Component:
100000 power train
Summary:
Grade gripper solenoid, replacement. on some mack chu, cxu, gu, and td truck models built between 04/31/2008 and 11/30/2015, the solenoid valve for the grade gripper feature is prone to internal contamination in harsh environments. the int
Bulletin:
PI 0861
Component:
101000 power train:clutch assembly
Summary:
On certain mack chu, cxu, gu, and td trucks built between 07/06/2009 through 09/26/2014, equipped with 'engine start condition, clutch pedal fully depressed' feature and has a relay center electronic power distribution module (epdm) gasket
Bulletin:
PI 0767
Component:
020000 suspension
Summary:
Certain gu model chassis' equipped with haldex slack adjusters and ridewell suspension with build dates between february 1 and march 24, 2010, may exhibit a condition which allows the slack adjuster control arm to make contact with the ride
Bulletin:
FSB 284-047
Component:
060000 engine (pws)
Summary:
Some mack vehicles built between 2004 and october 2013 experience an oil level sensor failure that leads to oil contamination into the engine wire harness.
Bulletin:
FSB 381-045
Component:
117000 digital instrument panel
Summary:
Instrument cluster reprogramming, vehicle built from jan. 1, 2007 to sept. 3, 2012, may experience an increase of parasitic battery drain with key off.
Bulletin:
FSB 371-045
Component:
111000 electrical system:battery
Summary:
Battery cable lug, failure
Bulletin:
FSB 561-023
Component:
062300 engine and engine cooling:cooling system:hose
Summary:
The incompatibility of hose inside diameter and compressor fitting size has caused the compressor hoses to come loose or blow out from the air compressor fittings.
Bulletin:
FSB 221-010
Component:
060000 engine (pws)
Summary:
During long hard pull conditions, diagnostic trouble codes (dtc) spn 100 fmi 1 or p052400 can log on certain mack cxu, gu, leu and mru vehicles built between january 1, 2010 and current production with mp7 epa2010 and obd2013 engines.
Bulletin:
FSB 284-047
Component:
060000 engine (pws)
Summary:
Some mack vehicles built between 2004 and october 2013 experience an oil level sensor failure that leads to oil contamination into the engine wire harness.
Bulletin:
FSB 213-002
Component:
060000 engine (pws)
Summary:
In some instances the exhaust rocker piston cap screw may become loose and back out causing loss of engine compression, or a mechanical injector diagnostic trouble code (dtc).
Bulletin:
FSB 642-002
Component:
010000 steering
Summary:
Certain gu trucks equipped with forward steer axles (18,000 lb rated front axles) and built before 2012, may experience issues with static steering while sitting still. there is not enough ability with a single steering gear to overcome cer
Bulletin:
FSB 237-020
Component:
103700 power train:automatic transmission:torque converter
Summary:
Mack chu, cxu, gr, gu, and pi trucks built from 2009 to 2017 and equipped with mp7, mp8, and mp10 engines (em-usa10, em-usa14, and em-usa17), will require a new torque specification for the unit injector yoke hold-down bolt.
Bulletin:
FSB 253-002
Component:
030000 brakes (pws)
Summary:
Engine brake loss. certain euro 4 mack vehicles built from january 14, 2010 to february 15, 2014 may experience engine brake loss in top gear. check the engine ecu dataset 2 part number and compare to the chart below.
Bulletin:
PI 0861
Component:
101100 power train:clutch assembly:pedal/linkage
Summary:
Clutch pedal micro switch replacement
Bulletin:
FSB 237-020rev
Component:
103700 power train:automatic transmission:torque converter
Summary:
Mack chu, cxu, gr, gu, and pi trucks built from 2009 to 2017 and equipped with mp7, mp8, and mp10 engines (em-usa10, em-usa14, and em-usa17), will require a new torque specification for the unit injector yoke hold-down bolt. effective immed
Bulletin:
FSB373-024
Component:
103000 power train:automatic transmission
Summary:
Some mack trucks equipped with mdrive transmissions built between september 6, 2010 and august 14, 2017 may have pto solenoid bracket or transmission harness connector failures due to excessive vibration.
Bulletin:
FSB237-020
Component:
070000 fuel system, gasoline
Summary:
Unit injector yoke hold-down bolt torque specification
Bulletin:
K53510452
Component:
070000 fuel system, gasoline
Summary:
Expired - refer to k93039325 - mack chassis - snm16-032 def (diesel exhaust fluid) contamination in diesel fuel.new solution released with improved information
Bulletin:
K77864401
Component:
070000 fuel system, gasoline
Summary:
Mack chassis - diesel exhaust fluid ( def ) system cleaning/flush after a pump failure or system contamination.removed tech tip, added correct operation id
Bulletin:
K42708399
Component:
117000 digital instrument panel
Summary:
Diagnostic trouble code ( dtc ) p0422 lighting the malfunction indicator light ( mil ) - obd15 and obd16 chassis (non-common rail).updated to reflect release of fsb284-064 (above)
Bulletin:
K84412328
Component:
117000 digital instrument panel
Summary:
Diagnostic trouble code ( dtc ) p249c intermittently lighting the malfunction indicator lamp ( mil ) - obd15 and obd16, model year ( my ) 2016 and 2017 chassis.updated to reflect release of fsb284-064 (above)
Bulletin:
K03179378
Component:
073100 fuel system, gasoline:fuel injection system:fuel rail
Summary:
Service only regen requested with no warning. diagnostic trouble codes ( dtc ) p24a4 / p10fe active or inactive with several counts - obd15 and obd16 conventional chassis; does not apply to us17 (common rail fuel system) chassis.updated to
Bulletin:
K86412082
Component:
117000 digital instrument panel
Summary:
Engine diagnostic trouble codes ( dtc's ) p24a0 and p249f lighting the malfunction indicator lamp ( mil ) - obd15 (commonly model year 2016) and newer.updated to reflect release of fsb284-064 (above)
Bulletin:
K45941512
Component:
062000 engine and engine cooling:cooling system
Summary:
Mack chassis - diagnostic trouble code ( dtc ) p0128, diagnostic and repair - us14+obd13 (commonly year model 2015) and newer.updated to reflect release of fsb284-064 (above)
Bulletin:
K86094641
Component:
060000 engine (pws)
Summary:
Mack chassis - diagnostic trouble code ( dtc ) p226c intermittently lighting the malfunction indicator lamp ( mil ) - obd15 and obd16 conventional chassis.updated to reflect release of fsb284-064 (above)
Bulletin:
K82320750
Component:
101000 power train:clutch assembly
Summary:
Automated manual transmission ( amt - f ) ( mdrive ) clutch valve unit ( cvu ) makes intermittent buzzing noise with the key on and engine off.changed repair information to reflect new software available.
Bulletin:
K43056254
Component:
063100 engine and engine cooling:exhaust system:emission control
Summary:
Mack chassis - aftertreatment control module ( acm ) not visible in premium tech tool ( ptt ).added more checks and procedures
Bulletin:
K14701433
Component:
091130 fuel system, other:storage:tank assembly:pressure relief devices
Summary:
Diagnostic trouble code ( dtc ) p009e - 73 - fuel pressure relief control performance / stuck off - ghg17 ( us17 ) chassis with common rail fuel system.changed repair instructions to reflect new procedures
Bulletin:
FSB284064
Component:
060000 engine (pws)
Summary:
Ecm and acm reprogramming, obd2015
Bulletin:
K58557784
Component:
070000 fuel system, gasoline
Summary:
Fuel injector offset learning diagnostic trouble codes ( dtc ) / fault codes logged in engine control module ( ems ); possible rough / uneven idle - obd15 chassis
Bulletin:
K14701433
Component:
118000 electrical system: software
Summary:
Diagnostic trouble code ( dtc ) p009e - 73 - fuel pressure relief control performance / stuck off - ghg17 ( us17 ) chassis with common rail fuel system, updated to reflect ghg17 software release
Bulletin:
K04342327
Component:
355200 equipment:other:owners/service/other manual
Summary:
Diagnostic trouble code ( dtc ) p0420 illuminating the malfunction indicator lamp (mil) - us17 (ghg17, common rail fuel system) chassis only
Bulletin:
K01050303
Component:
355200 equipment:other:owners/service/other manual
Summary:
Diagnostic trouble code ( dtc ) p0471 illuminating the malfunction indicator lamp (mil) - us17 (ghg17, common rail fuel system) chassis only
Bulletin:
K47547856
Component:
353000 equipment:electrical
Summary:
Particulate matter ( pm ) sensor diagnostic trouble codes ( dtc ) illuminating the malfunction indicator lamp ( mil ); tech tip tt-014-2016 - obd16 and newer emissions (commonly model year 2017, includes common rail fuel system chassis), re
Bulletin:
K72614548
Component:
110000 electrical system
Summary:
Diagnostic trouble code ( dtc ) p02fa illuminating the malfunction indicator lamp (mil) - us17 (ghg17, common rail fuel system) chassis only

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