2012 MACK GRANITE (GU) Recalls (13)

Campaign:
11V272000 on 05/05/2011
Component:
Service brakes, air:slack adjusters:automatic
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:
11V295000 on 05/22/2011
Component:
Power train:driveline
Affected:
584
Defect:
Mack trucks is recalling certain model year 2012, chu, cxu, gu, mru, leu, and td trucks equipped with a meritor driveline. the tubing used to assemble the affected drivelines has a nonconforming seam weld with insufficient bonding of the material.
Consequence:
This can result in seam weld fracture when torque is applied. once the tube seam weld is fractured, the driveline may become inoperable which may result in a disabled vehicle or debris from the driveline may fall on the roadway, both of which can increase the risk of a crash.
Correction:
Dealers will replace the drivelines free of charge. the safety recall began on july 25, 2011. owners may contact mack trucks at 1-800-528-6586.
Notes:
Mack trucks recall no. sc0353.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:
12V037000 on 02/02/2012
Component:
Service brakes, air:supply:check valve
Manufactured:
12/01/2010 - 01/17/2012
Affected:
2
Defect:
Mack is recalling certain model year 2012-2013 gu, manufactured from december 2, 2010, through january 18, 2012, and equipped with bendix atr-6 traction relay valves. in extremely cold conditions, these bendix relay valves may potentially develop internal leakage. internal leakage can lead to air pressure being delivered to affected primary or secondary brake causing continuous brake application.
Consequence:
Inadvertent brake application can cause the brakes to overheat and lead to a fire. inadvertent brake application can cause the wheels to lock-up leading the driver to lose control of the vehicle, increasing the risk of a crash.
Correction:
Mack will notify owners, and provide a temporary repair until bendix develops a permanent remedy. this service will be performed free of charge. owners may contact mack trucks at 1-800-866-1177.
Notes:
Mack trucks' recall number is sc0363.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:
12V308000 on 07/01/2012
Component:
Visibility:windshield wiper/washer:linkages
Manufactured:
10/09/2011 - 11/16/2011
Affected:
1,174
Defect:
Mack is recalling certain model year 2012 chu, cxu, and gu vehicles, manufactured from october 10, 2011, through november 17, 2011. hardware used to secure the windshield wiper linkage to the wiper motor may not be sufficiently torqued, and may cause the windshield wiper linkage to detach from the wiper motor. as a result, the windshield wipers will not function.
Consequence:
If this occurs, under certain driving conditions the driver's visibility will be reduced, increasing the risk of a crash.
Correction:
Mack will notify owners, and replace the hardware on affected vehicles, free of charge. the safety recall began on august 22, 2012. owners may contact mack trucks at 1-800-866-1177.
Notes:
Mack's recall number is sc0364.customers may contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (tty: 1-800-424-9153); or go to http://www.safercar.gov.
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.
Campaign:
15V522000 on 08/16/2015
Component:
Service brakes, air:supply:hoses, lines/piping, and fittings
Manufactured:
02/19/2008 - 04/29/2015
Affected:
62
Defect:
Mack trucks, inc. (mack) is recalling certain model year 2013 and 2015 titan (td), model year 2014 and 2015 pinnacle (chu), and model years 2009-2010, 2012, and 2014-2016 granite (gu) trucks. the chassis harness and air lines may not be properly clipped to the crossmember, which can allow the cables and air lines to fall and get twisted in the driveline.
Consequence:
If the electrical cables and air lines were to fall and get tangled in the driveline, it could affect the electrical system and braking system, increasing the risk of a vehicle crash.
Correction:
Mack will notify owners, and dealers will inspect the vehicles and properly clip the harness and air lines, free of charge. the recall began on september 30, 2015. owners may contact mack customer service at 1-800-528-6586. mack's number for this recall is sc0393.
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:
15V522000 on 08/16/2015
Component:
Electrical system:wiring
Manufactured:
02/19/2008 - 04/29/2015
Affected:
62
Defect:
Mack trucks, inc. (mack) is recalling certain model year 2013 and 2015 titan (td), model year 2014 and 2015 pinnacle (chu), and model years 2009-2010, 2012, and 2014-2016 granite (gu) trucks. the chassis harness and air lines may not be properly clipped to the crossmember, which can allow the cables and air lines to fall and get twisted in the driveline.
Consequence:
If the electrical cables and air lines were to fall and get tangled in the driveline, it could affect the electrical system and braking system, increasing the risk of a vehicle crash.
Correction:
Mack will notify owners, and dealers will inspect the vehicles and properly clip the harness and air lines, free of charge. the recall began on september 30, 2015. owners may contact mack customer service at 1-800-528-6586. mack's number for this recall is sc0393.
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:
15V528000 on 08/17/2015
Component:
Service brakes, air:supply:reservoir
Manufactured:
09/23/2010 - 06/30/2015
Affected:
84
Defect:
Mack trucks, inc. (mack) is recalling certain model year 2011-2016 granite (gu) trucks manufactured september 24, 2011, to july 1, 2015. the affected trucks may be equipped with an air brake system reservoir that does not have a sufficient volume. as such, these vehicles fail to comply with the requirements of federal motor vehicle safety standard (fmvss) number 121, "air brake systems."
Consequence:
If the air brake system reservoir has as insufficient volume, braking performance may be affected, increasing the risk of a crash.
Correction:
Mack will notify owners, and dealers will add additional air brake reservoir volume, free of charge. the recall began on october 15, 2015. owners may contact mack customer service at 1-800-866-1177. mack's number for this recall is sc0394.
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:
15V702000 on 10/25/2015
Component:
Engine and engine cooling:engine:other fuel types:turbo-charger
Manufactured:
11/16/2009 - 10/16/2015
Affected:
2,571
Defect:
Mack trucks, inc. (mack) is recalling certain model year 2010-2016 granite (gu), lr, and terrapro (leu, mru) trucks manufactured november 17, 2009 to october17, 2015. the affected trucks have engines with a turbocharger oil supply line that may contact or interfere with the turbocharger inlet elbow, clean air intake clamp, or the air fuel control tube, and result in an oil leak.
Consequence:
If the turbocharger oil supply line oil leaks in the proximity of the engine exhaust manifold there would be an increased risk of a fire.
Correction:
Cummins will notify owners on behalf of mack, and dealers will inspect for oil supply line interference or damage, eliminating the interference and replacing the oil supply line, as necessary, free of charge. the recall is expected to begin november 30, 2015. owners may contact cummins at 1-800-343-7357 or mack customer service at 1-800-866-1177. cummins' number for this recall is sc0396.
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:
15V804000 on 11/29/2015
Component:
Service brakes, air:disc:chamber
Manufactured:
09/16/2009 - 07/30/2015
Affected:
679
Defect:
Mack trucks, inc. (mack) is recalling certain model year 2010-2016 granite 4x2 trucks manufactured september 17, 2009, to july 31, 2015. due to a brake imbalance between the steer and drive axle brakes, the rear brakes may overheat.
Consequence:
If the rear brakes overheat there would be an increased risk of a tire blowout or a wheel-end fire.
Correction:
Mack will notify owners, and dealers will replace either the brake chambers on the steer axles or the drive axles to correct the imbalance, free of charge. the recall began on january 27, 2016. owners may contact mack customer service at 1-800-528-6586. mack's number for this recall is sc0398.
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:
16V099000 on 02/18/2016
Component:
Power train:driveline:driveshaft
Manufactured:
08/31/2011 - 09/07/2015
Affected:
33,981
Defect:
Mack trucks, inc. (mack) is recalling certain model year 2012-2016 granite (gu), pinnacle (chu, cxu), terrapro (leu, mru), titan (td), and lr trucks manufactured from september 1, 2011, through september 8, 2015. the cap nut that retains the interaxle driveshaft yoke to the rear axle input shaft may loosen.
Consequence:
If he cap nut loosens and falls off, the yoke can separate from the axle input shaft and allow the drive shaft to disconnect, increasing the risk of a crash.
Correction:
Mack will notify owners, and dealers will replace the cap nut. the input shaft threads will be inspected for damage. any damaged input shaft will be replaced. these repairs will be performed free of charge. an interim notice was sent to owners on april 25, 2016. the recall began on june 7, 2016. owners may contact mack customer service at 1-610-709-2131. mack's recall campaign number for this recall is sc0399.
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:
16V929000 on 12/22/2016
Component:
Suspension:front:hub
Manufactured:
01/06/2011 - 09/28/2016
Affected:
200
Defect:
Mack trucks, inc. (mack) is recalling certain model year 2012, 2014-2015 and 2017 granite (gu), 2012-2017 pinnacle (chu, cxu), and 2013-2015 and 2017 titan (td) trucks manufactured january 7, 2011, to september 29, 2016. the affected vehicles were built with front wheel hubs that cannot support the gross axle weight rating of the front axle.
Consequence:
Overloaded front wheel hubs can result in premature failure of the hubs, bearings, and the related components, which can cause the front hub assembly to separate from the front axle. because of this, the driver may lose control of the vehicle or parts may be dropped on the road, increasing the risk of a crash.
Correction:
Mack will notify owners, and dealers will replace the hub assemblies, free of charge. the recall began on february 16, 2017. owners may contact mack customer service at 1-800-866-1177. mack's number for this recall is sc0406.
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.

2012 MACK GRANITE (GU) TSBs (75)

Bulletin:
FB-284-027
Component:
062000 engine and engine cooling:cooling system
Summary:
Mack: there are engine diagnostic trouble codes and there may need to be a software update. *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:
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:
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:
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-258-030
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:
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:
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:
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-0787
Component:
103600 power train:automatic transmission:cooling unit and lines
Summary:
Mack: certain trucks had o ring installed incorrectly on transmission cooler line fittings during assembly, thereby causing fluid from transmission to be loss and/or damage to transmission, prematurely. *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:
PI-0784
Component:
060000 engine (pws)
Summary:
Mack: relocating vgt actuator connector and mounting arrangement to eliminate diagnostic trouble codes (dtcs) and signal missing from engine variable geometry turbocharger actuator (engine vgt actuator) causing fretting of connector pins.
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-0799
Component:
190000 tires
Summary:
Mack truck: the support brackets, used with wide base wheel/tire combinations equipment, provide additional strength that is required with longer cam tubes, were not installed at factory, and need to be replaced. models chu, cxu, gu. n
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-284-038
Component:
062000 engine and engine cooling:cooling system
Summary:
Mack truck: diagnostic trouble code (dtc) indicates an open thermostat and coolant system not operating correctly; during severe weather and heavy duty applications would display, during engine warm up and indicate an issue when the coolin
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:
FSB-284-063
Component:
060000 engine (pws)
Summary:
Mack truck: diagnostic trouble codes (dtc) illuminates information display when two or more active dtc are simultaneous and engine ecm need calibration transfer from electronic systems database and network (esdn), using insite, as required
Bulletin:
PI0862
Component:
350000 equipment
Summary:
Summary to be provided on a future date.
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:
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:
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
Bulletin:
FSB261-040
Component:
060000 engine and engine cooling
Summary:
Expansion tank, installation chu, cxu, gu, td, pi, gr
Bulletin:
K45573162
Component:
060000 engine and engine cooling
Summary:
Variable geometry turbo (vgt) calibration: premium tech tool (ptt) displays "motor disabled" message, operation will not run, will not complete when running operation; poor performance following calibration - us10 and newer emissions, comm
Bulletin:
K76992557
Component:
070000 fuel system, gasoline
Summary:
Aftertreatment hydrocarbon injector (ahi, 7th injector) changes between us10 and us17 (ghg17, common rail fuel system) - chassis experiencing high soot accumulation, abnormal ( too high, overtemp, too low ) regeneration temperatures followi

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