The defect
CRACKS MAY BE PRESENT IN THE BRAKE SPIDER. THESE CRACKS COULD EVENTUALLY CAUSE THE BRAKE SPIDER TO FAIL. THIS COULD ALLOW SEPARATION OF THAT PORTION OF THE BRAKE SPIDER THAT RETAINS THE BRAKE CAMSHAFT, THE BRAKE CHAMBER, AND THE BRAKE CHAMBER BRACKET FROM THE FOUNDATION BRAKE ASSEMBLY. BRAKE PULL IN THE DIRECTION OPPOSITE THE AFFECTED WHEEL LOCATION OR WHEEL LOCK-UP ON THE AFFECTED WHEEL COULD OCCUR.
The remedy
THE DEALER WILL INSPECT AND MODIFY THE AFFECTED BRAKE SPIDERS, FREE OF CHARGE.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|
Components: SERVICE BRAKES, AIR:DRUM
Other service brakes, air recalls in 1977
19 of the 245 recall campaigns reported to NHTSA in 1977 concerned the service brakes, air; MACK TRUCKS, INCORPORATED filed 245 campaigns in all.
| 77V224000 15 Dec 1977 | WHITE MOTOR CORPORATION |
| 77V206000 21 Nov 1977 | WHITE MOTOR CORPORATION |
| 77V186000 25 Oct 1977 | MOTOR COACH IND., INC. |
| 77V177000 14 Oct 1977 | INTERNATIONAL HARVESTER |
| 77V156000 21 Sept 1977 | GREAT DANE TRAILERS, INC. |
| 77V153000 20 Sept 1977 | GREAT DANE TRAILERS, INC. |
| 77V148000 19 Sept 1977 | TRAILMOBILE INC. |
| 77V147000 19 Sept 1977 | PACCAR, INCORPORATED |
NHTSA recalls (public domain) · all recalls of 1977