939003605 - H008 EXCESSIVE ROLLING/PITCHING - AT REAR

The customer complains of an excessive rolling and/or pitching sensation of the vehicle, especially at the back.
1ROAD TEST TO EVALUATE THE ROLLING/PITCHINGAll OKProblems encounteredOperation
Carry out a road test to evalute the folling/pitching of the vehicle    See Test 44B ROAD TEST FOR ROLLING/PITCHING EVALUATION End of diagnosisSubjective judgement compared with the reference vehicle 6Acceptable behaviour of the vehicle
Subjective judgement compared with the reference vehicle 5.5Move on to Step 2
Subjective judgement compared with the reference vehicle 3-4Move on to Step 4
2LONGITUDINAL ARM CHECKAll OKProblems encounteredOperation
Check condition:- of the bush fastening the longitudinal arm to the body;- of the bushes fastening the longitudinal arm to the steering knuckleMove on to Step 3Bush fastening longitudinal arm to the body not intactReplacement of longitudianl arm complete with transverse plate and bodyshell mounting bracket, in accordance with the    Op. 4410B40 LOWER TRACK CONTROL ARM (WITH BALLJOINT) FOR LEFT OR RIGHT FRONT SUSPENSION (ONE) - R+R - CHECK WHEEL GEOMETRY SEPARATELY checking the toe-in values are correct
Bushes fastening the longitudinal arm to the steering knuckle not intactReplacement of rear stub axle, checking that the toe in values are correct
3CAMBER ROD CHECKAll OKProblems encounteredOperation
Check condition:- of the bush securing the camber rod to the crossmember;- of the bush securing the camber rod to the steering knuckleMove on to Step 4Bush securing the camber rod to the crossmember not intactReplacement of camber rod in accordance with the    Op. 4410B68 LOWER SWINGING ARM(ONE), LH OR RH OF FRONT SUSPENSION - R R -CHECK WHEEL ALIGNMENT SEPARATELY checking the camber values are correct
Bush securing the camber rod to the steering knuckle not intactReplacement of rear stub axle, checking that the toe in values are correct
4SHOCK ABSORBER EFFICIENCY CHECKAll OKProblems encounteredOperation
Check the efficiency of the shock absorbers by carrying out manual compression manoeuvres (resting on the wheel arch by the centre of the wheel), which should be carried out on both sides of the vehicle.Move on to Step 5Sudden return without dampingReplace the shock absorber that is not working properly    Op. 4420A12 REAR SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMENTLING/REBUILDING OF ASSEMBLY AT BENCH R R
5VEHICLE GEOMETRY CHECKAll OKProblems encounteredOperation
After replacing the shock absorbers, check the geometryEnd of diagnosisGeometry values do not conformRestore the geometry to the correct values    Op. 4450A40 REAR WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT, INCLUDES ADJUSTMENT IF NECESSARY