5 Series E60 520d (N47) SAL
-
Leave the engine running at idle speed for approx. 5 min. and flush the steering system while it is in the
straight-ahead position.
-
In vehicles equipped with Servotronic, then disconnect the converter and, with the engine running and the
vehicle standing on its wheels, turn the steering wheel from the straight-ahead position through 180
°
a total
of 10 times. (The steering resistance caused by the vehicle standing on its wheels is necessary in order to
build up pressure in the KMH).
7.
The delivery pressure of the hyraulic pump is too low or is irregular. Check the nominal pressure of the pump
and replace the pump if necessary.
(See Technical Data/Repair Instructions 32 41 009).
8.
If points 1 - 7 are OK: the fault may be in the steering box. Replace the steering box.
Complaint:
Rotary oscillation of steering wheel while driving (KMH)
1.
If this problem only arises when braking, check the run-out of the brake disks.
(See Service Information bulletin 34 01 93 (655)).
2.
Drive around to warm up the tyres (flatspot) and then balance them, or fit your set of master reference wheels.
3.
Check wheel bearing play and replace any faulty wheel bearings.
4.
Check whether the following components are damaged, stiff, corroded, worn, have play, are worn out: ball joints,
McPherson strut mounts, steering shaft bearings, universal joints of the steering shaft, track rod joints, control
arm bearings, thrust rod bearings/rubber bushings, anti-roll bar bearings, pendulum supports, pitman arms and
steering arms. If necessary, replace components.
5.
Check the shock absorbers.
(For shock tester values, see current Service Information bulletins 37 01 94 (782) and 37 01 92 (562)).
Complaint:
Poor directional stability (straight-ahead tracking), vehicle swimming (KMH)
1.
Check the condition and pressure of the tyres and if necessary, fit your set of master reference wheels. Is the
rim/tyre size and the combination of rim and tyre approved?
2.
Check wheel bearing play and replace any faulty wheel bearings.
(See Repair Instructions 31 21 180).
3.
Check whether the following components are damaged, stiff, corroded, worn, have play, are worn out: ball joints,
McPherson strut mounts, steering shaft bearings, universal joints of the steering shaft, track rod joints, control
arm bearings, thrust rod bearings/rubber bushings, anti-roll bar bearings, pendulum supports, pitman arms and
steering arms. If necessary, replace components.
4.
Check whether all relevant threaded chassis and suspension joints and steering components are fitted securely
and tighten if necessary.
(For tightening torques, see Technical Data.)
5.
Check the shock absorbers.
(For shock tester values, see current Service Information bulletins 37 01 94 (782) and 37 01 92 (562)).
6.
Check the chassis and suspension tuning and carry out suspension alignment using the KDS (Kinematic
Diagnosis System).
(See Repair Instructions 32 00 150).
Complaint:
Sporadic failure of steering power assistance, steering sticking (KMH)
1.
In vehicles equipped with power-assisted recirculating-ball steering and Servotronic, check the
converter/Servotronic using the DIS diagnosis program.
E38 only: On converters manufactured up to production date week 40/95 (see rating plate), there is a possibility
SI Aid to Diagnosing the Steering System
BMW AG - TIS
23.01.2013 15:37
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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