3308725 - S41 NOISE' FRONT / WHILST DRIVING OVER UNMADE ROAD

With the vehicle driving over an umade road or one with a large number of bends, noise can be heard from the front.
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation
Road test the vehicle on an unmade road or one with a large number of bends to identify the type of noise:Unspecified noise: Continue to Step 1 The noise is a creaking Continue to Step 1
The noise is a hissing Continue to Step 4
The noise is a knocking Continue to Step 6
1SUSPENSION COMPONENTS CHECKAll OKProblems metOperation

Check the front suspension components for any signs of rubbing:

  • between the suspension arm bushes and washers
  • between the dust cover and the shock absorber
  • between the end of travel buffer and the housing
Continue to Step 2 Signs of rubbingLubricate or replace the components involved (see Subassembly 4410A)
2ANTI-ROLL BAR TIGHTENINGS CHECKAll OKProblems metOperation
Check the condition of the anti-roll bar flexible mountings and that they are correctly tightened Continue to Step 3 Anti-roll bar mountings worn or not tightened Restore the tightenings, lubricate, or replace the mountings Op.   4410C10 
3ENGINE COMPARTMENT FIXINGS CHECKAll OKProblems metOperation
Check that the pipes and shields are correctly positioned and fixed in the engine compartment Continue to Step 7 Components not properly connected causing interferenceSuitably tighten the pipes or shields involved
4SHOCK ABSORBER CHECKAll OKProblems metOperation
Check for any friction between the shock absorber stem and the seal Continue to Step 5 Signs of rubbing Lubricate or replace the shock absorber Op.   4410A12 
5WHEEL BEARING CHECKAll OKProblems metOperation
Check the operation of the front wheel hub bearing Continue to Step 7 Bearing worn or damaged Replace the wheel hub bearing Op.   4450C32 
6BUSHES AND FLEXIBLE MOUNTINGS CHECKAll OKProblems metOperation

Check the condition of the bushes and mountings and that they are correctly tightened In order:

  • front selector fork flexible supports
  • track control arm ball joints
  • shock absorber attachment mounting
Continue to Step 7 Arm supports worn or damagedReplace the supports (see Assembly 4410B)
Selector fork supports worn or damagedReplace the supports (see Assembly 4410A)
Shock absorber attachment mounting damaged Replace the mounting Op.   4410A12 
7HECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsSearch for the fault starting from another symptom'