184000585 - S27 REAR SUSPENSION NOISE (WHISTLE/HUM)

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 S15 VEHICLE RUNNING NOISE . Carry out the latter first.

If the problem is only on one side, carry out the checks and any operations on the appropriate side only.

		Results of the tests
0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Having carried out the road test, see the Table S15 RUMOROSITA' in condizioni di marcia , there was a whistling noise from the back.Continue depending on the circumstances in which the noise occurs	End of diagnosis	The noise increases when cornering	Replace the wheel bearing on the side where the noise is loudest Op. 4450C32 fitting it with the magnetic track facing the steering knuckle seal This bearing is used by the ABS active sensors to calculate the wheel speed. It should NEVER come into contact with metal shavings or magnetic components (screwdrivers, etc.) because they could alter the gap or damage the codifier and prevent a correct reading from the sensor
			The noise increases in vertical oscillation conditions	Move on to Step 1 1
1	BRAKE DRUM CHECK	All OK	Problems encountered	Operation
	Remove the wheel    Op. 4450B02 LEFT FRONT WHEEL R RCheck the condition of the brake linings.	Move on to Step 2 1	Brake linings worn	Replace the brake linings
2	SHOCK ABSORBER STEM CHECK	All OK	Problems encountered	Operation
	Check that the noise is not due to friction between the shock absorber stem and the gasket, checking the condition of the stem chrome surface	End of diagnosis	There is irregular friction	Lubricate the stem raising the dust cover with a layer of silicon grease. If the noise persists, replace the shock absorber    Op. 4410A12 FRONT SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMANTLING/RE-BUILDING OF ASSEMBLY AT BENCH R R