Drive Shaft - Take-Off Vibration at Low Speed

91volvo06

MODEL GROUP NUMBER

700/900 45 102

TITLE

TAKE-OFF VIBRATION


1983 -->


MARKET DATE

US and Canada January 1991


REFERENCE: TP 30687/1 (ENGLISH); 01/86; POWERTRAIN
TP 30798/1 (ENGLISH); 03/85; POWER TRANSMISSION

Take-off Vibration


Background: Take off vibrations at low speed, especially with high acceleration and/or heavy load, can occur in some cases.

Solution: The level of vibration can be reduced by changing the vertical position of the center support bearing. Best results differ from car to car. Start with a change of +6 mm (1/4 inch) upwards. If results are not acceptable, try other positions using a variation of -5 mm (3/16 inch) downward to +12 mm (1/2 inch) upward from the ORIGINAL position.


NOTE: Check to ensure that, if the vehicle is subject to the FUEL TANK CLEARANCE RECALL (SMB 23-23; May '90 - Recall 55), the required inspection and/or service have been performed prior to performing this repair.


IMPORTANT: The clearance between the driveshaft and fuel lines must be at least 20 mm. Clearance between driveshaft and fuel tank must be at least 16 mm. Final inspection must be performed at correct vehicle road height, with vehicle either on drive-on lift or on ground level. Shimming upwards should not exceed +12 mm (1/2 inch). After re-positioning, the center support bearing housing should not contact floor pan.








Moving upwards (0 to +12 mm)

Assemble M8 washers (or equivalent) between bearing housing and member. Use longer bolts.








Moving downwards (0 to -5 mm)

Assemble M8 washers (or equivalent) between member and body. Use longer bolts.


During the New Car Warranty period, claims must be submitted under:

Oper.No. Labor Description Time Allowance

453 303 Center support position, adjusting 0.2 hr.