Gear Pump (Workman HD)
Removal (Fig. 26)
3. After installing the pump and connecting hydraulic
hoses, install belt and adjust belt tension (see Opera-
tor’s Manual).
1.
(if installed), shut engine off and engage the parking
brake. Remove key from the ignition switch.
Parkvehicleonalevelsurface,raiseandsupportbed
4. Checkoillevelintransaxle.AddDexronIIIATFifnec-
essary.
2.
Loosen pump drive belt and remove belt from pump
pulley.
5. Start the engine and operate at idle speed until air is
out of hydraulic system.
3.
Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of this chapter section.
6. Stop the engine and recheck oil level in transaxle.
Add Dexron III ATF if necessary.
8
CAUTION
RIGHT
13
1
4
16
FRONT
11
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 the bed onto the bed support
and operate other hydraulic accessories.
15
7
17
18
9
12
1
6
10
4.
caps or plugs in hoses and pump fittings to prevent con-
tamination and leakage of hydraulic oil.
Disconnect hydraulic hoses from gear pump. Install
ANTISIEZE
LUBRICANT
5
5.
a guide.
Remove gear pump from mount using Figure 26 as
4
3
2
Figure 26
6.
pump, mark fitting orientation to allow correct assembly.
Remove fittings from pump and discard O--rings.
If hydraulic fittings are to be removed from gear
1.
Drive belt
10. Gear pump
11. Lock nut (2 used)
12. Pressure hose
13. Hose clamp
14. O--ring
15. Hydraulic fitting
16. O--ring
2.
3.
4.
5.
6.
7.
8.
9.
Lock nut
Flat washer
Pump pulley
Flange head screw
Carriage screw
Mount
Suction hose
Square key
Installation (Fig. 26)
1.
If fittings were removed from gear pump, lubricate
17. Hydraulic fitting
18. O--ring
and place new O--rings onto fittings. Install fittings into
pump openings using marks made during the removal
process to properly orientate fittings. Tighten fittings
(see Hydraulic Fitting Installation in the General Infor-
mation section of this chapter).
1
3
2.
InstallgearpumptomountusingFigure26asaguide
and using the following instructions:
A. Apply antiseize lubricant to gear pump shaft be-
fore installing pulley.
B. Install pump suction hose to fitting on pump, then
fill pump through pressure port of pump, with clean
Dexron III ATF.
2
Figure 27
C. Installpumppressurehosetofittingonpump(see
Hydraulic Hose and Tube Installation in the General
Information section of this chapter).
1.
2.
Gear pump
Pump pulley
3.
Engine pulley
Hydraulic System
Page 9 -- 34
Workman HD Series
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