Steering and Suspension
Volvo Bus Service and Maintenance Manual
| ||Wheel alignment|
||Park on a flat surface with the front wheels pointing straight ahead. Check toe-in and adjust if necessary.|
| ||Trailing unit tracking (artic bus)|
| ||Check the tracking if there is tyre wear or if the driving is not as it should be. This is done with a laser instrument or corresponding, see Service Manual, Section 6, B10M (ch.no. 20001-). If necessary, adjust the drag link in the trailing unit steering linkage.|
| ||Steering damper|
||Check that the plunger rod is clean and that the damper is not leaking.|
Even wear on the tyres indicates that the bus has properly adjusted wheel angles.
Where this is the case, a regular check on the wheel alignment is normally not
required. It is only first when there are complaints about the condition of the
bus when driving and/or there are signs of tyre wear that such a check should
be carried out.
Lopsided air bellows can be a sign that the axle is at an angle.
A complete wheel alignment check involves measuring the following:
|-||Max. curve angle and curve-angle difference.|
Toe-in should be 0-3 mm (0-0.12
in). From a tyre wear point of view, we recommend a toe-in as near 0 mm as
If the steering damper shows tendencies to leak,
tighten up the sealing ring. The tightening torque for the counternut
is 50-60 Nm (0.5-0.6 kgf m). If the plunger rod surface is damaged, the steering
damper should be replaced.