2888458 - S36 NOISE ' POWER ASSISTED STEERING / WITH THE STEERING WHEEL STATIONARY

After the steering wheel has been operated many times, there is a noise when it is left still
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation
Visually inspect the power assisted steering fluid level in the reservoirCarry out a test by steering on full lock and then releasing the steering wheelContinue to Step 1Level too lowRestore the correct level. if there are leaks, See table   X30 
The noise is a knocking / bangingContinue to Step 1
The noise is a hissing in three positions of the steering wheel (about 120° apart)No intervention of any sort is necessary: the noise is due to the normal operation of the system
1STEERING COLUMN BEARINGS CHECKAll OKProblems metOperation
Check that there is not too much play in the steering column; check the condition and the efficiency of the steering column support bearingsContinue to Step 2Bearings worn or damagedReplace the bearings involved Op.   4110A31 
2CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsSearch for the fault starting from another symptom'