1984 CHEVROLET B6P042 Recalls (3)

Campaign:
84V134000 on 11/08/1984
Component:
Service brakes, hydraulic:power assist:hydraulic
Manufactured:
10/31/1981 - 03/31/1984
Affected:
1,436
Defect:
Vehicles have a primary and a reserve braking system. if the primary brake system booster fails, under some circumstances the reserve system may also malfunction and braking ability will be impaired.
Correction:
Dealer will install a new reserve brake control module at no cost to owner.
Notes:
Vehicle description: school buses and forward control chassis trucks equippedwith hypower dual hydraulic brake systems.system: service brakes; hydraulic brake system, reserve brakes systemelectronic control module.consequences of defect: a reduction of braking ability in a situation whenminimum stopping distance is required could result in an accident without priorwarning.

Campaign:
86V086000 on 07/10/1986
Component:
Service brakes, hydraulic:fluid
Manufactured:
09/30/1982 - 12/31/1985
Affected:
4,299
Defect:
Severe brake chatter may cause the brake chamber mounting brackets on either side to develop cracks in the weld area where the s-cam shaft tube attaches to the chamber support section. consequence of defect: brackets can break, resulting in loss of braking ability at the front wheel, and possibly restrict steering, which could lead to a vehicle crash without prior warning.
Correction:
As necessary, replace front brake chamber mounting brackets and install a front brake limiting valve.
Notes:
System: brakes. vehicle description: school buses equipped with a 7500 lb. front axle and without a front brake limiting valve.

Campaign:
87V121000 on 08/06/1987
Component:
Service brakes, air:drum:chamber
Manufactured:
09/30/1982 - 05/31/1987
Affected:
7,870
Defect:
Severe brake chatter may cause the brake chamber mounting brackets on either side to develop cracks in the weld area where the s cam shaft tube attaches to the chamber support section.
Consequence:
Brackets can break, resulting in loss of braking abilityat that front wheel, and possibly restricted steering, which could lead to avehicle crash without prior warning.
Correction:
As necessary, install new reinforced front brake chamber mounting brackets and install a front brake limiting valve on vehicles without one.
Notes:
System: brakesvehicle description: school buses equipped with 7,500 lb. front axle and mediumduty trucks equipped with a 7,000 lb. front axle.

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