323001379 - S027 REAR NOISE (WHISTLING/HUMMING)
Whilst driving, especially on unmade roads, there is a whistling noise coming from the rear suspension. This diagnosis can only be made after See table S015 NOISE WHILST DRIVINGCarry out the latter first. | If the problem is only on one side, carry out the checks and any operations on the appropriate side only. |
| Test results | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|---|---|---|---|
| Having carried out the road test, during the See table S015 NOISE WHILST DRIVINGa whistling noise was noticed coming from the rear. Continue depending on the situation in which the noise occurs. | End of diagnosis. | 1. The noise increases when cornering.2. The noise increases in vertical oscillation conditions. | 1. Replace the wheel bearing complete with hub on the side where the fault occurred. Op. 4450D10 HUB FOR ONE REAR WHEEL, L/H OR R/H - R+R WITH WHEEL REMOVED - CHECK WHEEL GEOMETRY SEPARATELY 2. Move on to Step 1. | |
| 1 | REAR BRAKE CHECK | All OK | Problems encountered | Operation |
| Removing the wheel Op. 4450B13 REAR WHEELS (TWO) - R.R Check the condition of the rear drum brake linings. | Move on to Step 2. | Brake linings worn. | Replacement of worn brake linings Op. 3320B30 REAR BRAKE DRUM (ONE), LEFT OR RIGHT - R.R. | |
| 2 | SHOCK ABSORBER STEM CHECK | All OK | Problems encountered | Operation |
| Remove the left wheel Op. 4450B06 LEFT REAR WHEEL - R.R and/or the right one Op. 4450B08 RIGHT REAR WHEEL - R.R Check that the noise is not due to irregular friction between the shock absorber stem and the gasket, checking the condition (scoring/contact marks) of the stem chrome surface. | End of diagnosis. | There is irregular friction. | Lubricate the stem raising the dust cover, using a layer of silicon grease. If the noise persists, replace the shock absorber Op. 4420A30 REAR SUSPENSION SHOCK ABSORBER (ONE), LEFT OR RIGHT - R.R. - CHECK WHEEL GEOMETRY SEPARATELY | |