3308646 - H21 STEERING WHEEL OSCILLATIONS/ VIBRATIONS / WITH THE VEHICLE STATIONARY

With the engine running and the vehicle stationary, the steering wheel oscillates and vibrates
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation
Check the tyre inflation pressurePreliminarily check the engine idle speed Continue to Step 1 Engine idle irregular See table   D10 
Tyre inflation pressure not correctRestore the tyre inflation pressure
1ENGINE SUPPORT CHECKAll OKProblems metOperation
Check the condition of the engine supports and reaction rod Continue to Step 2 Engine supports faultyLoosen the fixings: loosen the bolts, centre them in their housings and tighten them to the recommended torque (see Assembly 1008A)
Reaction rod faultyBed in the fixings: loosen the bolts, centre them in their housings and tighten them to the recommended torque (see Assembly 1008C)
2STEERING COLUMN CHECKAll OKProblems metOperation

Check the condition and the efficiency of the steering column support. In particular, check:

  • that there is no clearance between the support bushes and the steering column
  • that the steering column joints are correctly tightened
Continue to Step 3 Bushes worn or damagedRestore the efficiency of the steering column If necessary, replace the bearings involved Op.   4110A30 
Spider joint clearance too large Tighten the bolts or replace the steering column Op.   4110A30 
3STEERING WHEEL ADJUSTMENT DEVICE CHECKAll OKProblems metOperation
Check the condition of the steering wheel adjustment device

In particular, check:

  • that the clearance between the device and the steering column is correct
Continue to Step 4 Coupling with excessive clearanceRestore the efficiency of the steering wheel adjustment device. If necessary, replace it
4CHECKING TIMINGAll OKProblems metOperation
Check that the engine timing is correct Continue to Step 5 Timing not correct Restore the correct engine timing Op.   1032B14 
5FLYWHEEL BALANCE CHECKAll OKProblems metOperation
Check that the flywheel balance is correct Continue to Step 6 Balance not correct Replace the flywheel Op.   1024B10 
6HECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsSearch for the fault starting from another symptom'