939010123 - S036 NOISE ' POWER ASSISTED STEERING / WITH THE STEERING WHEEL STATIONARY

After operating the steering numerous times, a noise is heard when the steering wheel is left still
0PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION
Visually inspect the level of the power assisted steering fluid in the reservoir. Conduct a test by steering completely to one side and then releasing the steering wheelMove on to Step 11. Fluid level too low.1. Restore the correct fluid level: if there are leaks, continue follow the instructions in    See table X030 POWER ASSISTED STEERING SYSTEM FLUID LEAKS
2. The noise heard is a knock/striking noise2. Move on to Step 1
3. A blowing noise is heard in correspondence with the three steering wheel positions (120° apart)3. No intervention is nececssary: the noise is due to the by-pass valve that discharges the excess pressure
1CHECK STEERING COLUMN BEARINGSALL OKPROBLEMS ENCOUNTEREDACTION
Check for excessive play in the steering column: check the condition and efficiency of the steering column mount bearings.End of diagnosisBearings worn or damagedReplace the affected bearings    Op. 4110A30 SUPPORT WITH STEERING CONTROL SHAFTS - R+R