Recalls for 1985 Transportation Mc9

DEFECT #1 - STEERING:LINKAGES

Posted on: 1987-05-19
Description
There may not be proper engagement between the male taper of the ball stud and the female taper of the pitman arm.

Consequence
Steering drag link could loosen and disengage from thesteering gear pitman arm, and result in a total loss of steering control.

Corrective Action
Repair to ensure that coaches have a good, tight pitman arm/drag link joint.

Notes
System: steeringvehicle description: metro transit coaches.

DEFECT #2 - STEERING:GEAR BOX (OTHER THAN RACK AND PINION)

Posted on: 1986-07-29
Description
The pinch bolt used to clamp the steering drive shaft yoke to the steering gear box shaft may have insufficient torque.  Consequence of defect: if the pinch bolt has insufficient torque, the bolt will wear to the extent that loss of interface with the groove in the steering box would occur, allowing the steering drive shaft to slip off and result in loss of steering and a potential crash.

Consequence


Corrective Action
Install new pinch bolts, as necessary, and retorque to 40-45 lb./ft.

Notes
System: steering/pinch bolt.vehicle description: intercity coaches.

DEFECT #3 - STEERING:LINKAGES:TIE ROD ASSEMBLY

Posted on: 1985-06-28
Description
The center axle mounted steering gear necessitates the use of longer tie rod arms.  These arms come in closer proximity to the front tires than buses not having the center axle mounted steering gear.  Consequence of defect: the longer tie rod could scuff the front tire, which could result in tire failure and possible loss of vehicle control.

Consequence


Corrective Action
Replacement of tie rods on buses found to have tire clearance problems.

Notes
Vehicle description: buses mc-9 tab, 96a2.system: steering/tie rods.