Service Manual

Workman HD Series Page 9 − 61 Hydraulic System
Removal (Fig. 46)
1. Park vehicle on a level surface, lower bed until clevis
pins that secure lift cylinder to bed are loose in the bed
slots. Shut engine off and engage the parking brake. Re-
move key from the ignition switch.
2. 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.
3. Disconnect hydraulic hoses from lift cylinder. Install
caps or plugs in hoses to prevent contamination and
leakage of hydraulic oil. Install plugs in cylinder ports.
4. Remove lynch pin and clevis pin that secure lift cylin-
der to bed.
5. Remove cotter pin that secures lift cylinder to engine
support.
6. Remove lift cylinder from vehicle.
7. If hydraulic fittings are to be removed from lift cylin-
der, mark fitting orientation to allow correct assembly.
Remove fittings from cylinder and discard O−rings.
Installation (Fig. 46)
1. If fittings were removed from lift cylinder, lubricate
and place new O−rings onto fittings. Install fittings into
cylinder openings using marks made during the removal
process to properly orientate fittings. Tighten fittings
(see Hydraulic Fitting Installation in this chapter).
2. Make sure that lift cylinder is fully retracted.
3. Position lift cylinder to vehicle. Secure lift cylinder to
bed with clevis pin and lynch pins and to engine support
with cotter pin.
4. Remove plugs and/or caps from hydraulic hoses and
cylinder ports. Connect hydraulic hoses to lift cylinder
(see Hydraulic Hose and Tube Installation in this chap-
ter).
5. Start the engine, operate at idle speed and raise and
lower bed until air is out of hydraulic system.
6. Stop the engine and check oil level in transaxle (see
vehicle Operator’s Manual). Add Dexron III ATF if neces-
sary.
Hydraulic
System