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Workman HD Series Page 9 − 49 Hydraulic System
Removal (Fig. 36)
1. Park vehicle on a level surface, raise and support bed
(if installed), shut engine off and engage the parking
brake. Remove key from the ignition switch.
2. Remove seat base from vehicle (see Seat Base Re-
moval in Chapter 7 − Chassis in this manual).
3. Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of this chapter section.
CAUTION
Before performing any service or repair on hy-
draulic system components, relieve system
pressure to avoid injury from pressurized hy-
draulic oil. Stop the engine, remove key from the
ignition switch, rotate the steering wheel in both
directions, lower or support the bed and operate
other hydraulic accessories.
4. Label and disconnect hydraulic hoses from lift valve.
Install caps or plugs in hoses to prevent contamination
and leakage of hydraulic oil. Install plugs in valve ports.
5. Remove lift valve from vehicle.
6. If hydraulic fittings are to be removed from lift valve,
mark fitting orientation to allow correct assembly. Re-
move fittings from valve and discard O−rings.
Installation (Fig. 36)
1. If fittings were removed from lift valve, lubricate and
place new O−rings onto fittings. Install fittings into valve
openings using marks made during the removal process
to properly orientate fittings. Tighten fittings (see Hy-
draulic Fitting Installation in the General Information
section of this chapter).
2. Install lift valve to vehicle.
1. Lift lever
2. Link
3. Retainer pin
4. Lift valve
Figure 37
2
1
4
3
3. Replace O−rings on hydraulic hoses and fittings. Re-
move caps and plugs from hoses and fittings. Connect
hydraulic hoses to lift valve (see Hydraulic Hose and
Tube Installation in the General Information section of
this chapter).
4. Install seat base to vehicle (see Seat Base Installa-
tion in Chapter 7 − Chassis in this manual). Make sure
that lift lever can be moved in control plate slot to allow
correct operation of lift lock.
5. Check oil level in transaxle. Add Dexron III ATF if nec-
essary.
6. Start the engine, operate at idle speed and operate
the lift lever in both directions until air is out of hydraulic
system.
7. Stop the engine and recheck oil level in transaxle.
Add Dexron III ATF if necessary.
8. On TC models, verify correct operation of lift lever in-
terlock switch.
Hydraulic
System