Service Manual

Multi Pro 5800Hydraulic System Page 5 − 70
Removal (Fig. 57)
1. Park the machine on a level surface, engage parking
brake and stop engine. Remove key from the ignition
switch.
CAUTION
Rotate steering wheel and depress traction ped-
al in both forward and reverse to relieve hydrau-
lic system pressure and to avoid injury from
pressurized hydraulic oil.
2. Operate all hydraulic controls to relieve hydraulic
system pressure.
3. Remove steering wheel from steering control valve:
A. Remove steering wheel cover from steering
wheel by carefully prying up on one of the cover
spokes.
B. Remove nut and flat washer that secure steering
wheel to steering control valve shaft.
C. Use a suitable puller to remove steering wheel
from steering control valve.
D. Remove the cover sleeve (item 26).
4. Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
5. Loosen and remove four (4) cap screws that secure
steering control valve to machine frame.
6. Lower steering control valve (with hydraulic hoses
attached) out of frame opening.
7. Label all hydraulic hoses for assembly purposes.
Thoroughly clean hydraulic hose ends.
8. Disconnect hydraulic hoses connected to the steer-
ing control valve (Fig. 58). Allow hoses to drain into a
suitable container. Cap or plug openings of control valve
and hoses to prevent contamination.
9. Remove control valve from machine.
Figure 58
1
5
2
3
4
1. R port
2. E port
3. T port
4. P port
5. L port
Installation (Fig. 57)
1. Remove caps and plugs from disconnected hoses
and control valve fittings.
2. Using labels placed during control valve removal, lu-
bricate new O−rings and connect hydraulic hoses to
steering control valve (Fig. 58). Tighten hose connec-
tions (see Hydraulic Hose and Tube Installation in the
General Information section of this chapter).
3. Slide steering control valve (with hydraulic hoses at-
tached) into frame opening. Secure control valve to
frame with four (4) cap screws.
4. Install steering wheel to steering control valve:
A. Install the cover sleeve (item 26).
B. Apply antiseize lubricant to splines of steering
control valve shaft taking care to keep antiseize lubri-
cant from tapered surface of shaft. Slide steering
wheel onto steering valve.
C. Secure steering wheel to steering control valve
shaft with flat washer and nut. Torque nut from 20 to
26 ft−lb (28 to 35 N−m).
D. Install steering wheel cover to steering wheel.
5. Check fluid level in hydraulic oil reservoir and adjust
as required.
6. After assembly is completed, rotate steering wheel
in both directions to verify that hydraulic hoses and fit-
tings are not contacted by anything and that there are no
leaks from hydraulic connections.