Filter Element Replacement; Steering System Play Inspection - PREVOST H3-41 Maintenance Manual

SECTION 14: STEERING

14.3.2 Filter Element Replacement

NOTE
Note: Before taking the power steering fluid
reservoir cover off, thoroughly clean the
reservoir and caps to prevent the ingress of
impurities into the hydraulic fluid.
FIGURE 28: HOSE CLAMPS
FIGURE 29: FILTER REMOVAL
1. Remove the cap
2. Prepare an appropriate container.
3. Disconnect the larger suction hose first.
4. Disconnect the inlet hose.
5. Drain all fluid from the reservoir.
6. Press down and unscrew the filter.
7. Lift up the old filter and keep one finger
under the filter's center hole, to prevent the
impurities from the filter from entering the oil
reservoir.
22 PA1621 Maintenance Manual All Series | Section revised June 2019
8. Drain any remaining oil.
9. Clean reservoir.
10. Transfer the screw to the new filter and
insert it into the oil reservoir.
11. Check that the filter is positioned correctly
and is locked in place securely.
12. Reconnect the hoses.
Tighten the clamps to 30 lb-ft (41 Nm)
13. Top up with fresh oil to the MAX marking.
14. Double check cleanliness of cap and install.
15. Discard the oil collected during the filter
change.
CAUTION
Protect the fluid from being soiled by
impurities
When removing the old filter element, make
sure that power steering fluid doesn't flush
back particles into the reservoir. If this
situation occurs, contaminated fluid must be
drained and the reservoir must be cleaned.
14.4 STEERING
INSPECTION
Basically, the steering system play is checked with
the engine running and the front wheels in the
straight ahead driving position. The steering wheel
is slowly turned in one direction until there is a
perceptible movement of a front wheel. If a point
on the steering wheel rim moves more than the
value indicated below before perceptible return
movement of the wheel under observation, there
is excessive free play in the steering system.
Steering wheel travel covered:
Maximum 1.732 inch (44mm) with Prevost
18-inch steering wheel
SYSTEM PLAY