2 recalls found. |
DEFECT #1 - SERVICE BRAKES, AIR:DRUM:CHAMBER
Posted on: 1987-08-07
Description
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.
Corrective Action
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.
DEFECT #2 - SERVICE BRAKES, HYDRAULIC:FLUID
Posted on: 1986-07-11
Description
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.
Consequence
Corrective Action
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.