Removal (Fig 51)
Park machine on a level surface, lower cutting
decks, stop engine, apply parking brake and remove
key from the ignition switch.
Installation (Fig 51)
1.
1. If fittings were removed from gear pump, lubricate
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).
2.
Hood Removal in the Service and Repairs section of
Chapter 7 -- Chassis).
Remove hood to gain access to gear pump (see
2.
Position gear pump to piston pump. Align gear pump
3.
Drain the hydraulic reservoir.
input shaft splines with piston pump coupler and slide
gear pump input shaft into piston pump coupler. Secure
gear pump to piston pump with two (2) cap screws.
Torque screws from 67 to 83 ft--lb (91 to 112 N--m).
4.
pump removal, thoroughly clean exterior of pump and
fittings.
To prevent contamination of hydraulic system during
3.
Remove caps or plugs from hydraulic lines and fit-
5.
purposes.
Label all hydraulic hose connections for assembly
tings. Install hydraulic lines to gear pump (see Hydraulic
Hose and Tube Installation in the General Information
section of this chapter).
6.
Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
4.
5.
6.
Remove and replace hydraulic filters.
Fill hydraulic reservoir with new hydraulic oil.
Properly fill hydraulic system (see Charge Hydraulic
7.
Disconnect all hydraulic lines from gear pump and
putcapsorplugsonopenhydrauliclinesandfittings.La-
bel disconnected hydraulic lines for proper reassembly.
System in this section).
7.
hydraulic reservoir oil level.
Stop engine and check for hydraulic oil leaks. Check
CAUTION
8.
Repairs section of Chapter 7 -- Chassis).
Install hood (see Hood Installation inthe Serviceand
Make sure gear pump is properly supported be-
fore removing the pump mounting screws. Gear
pump assembly weighs approximately 42
pounds (19 kg).
8.
Support gear pump assembly to prevent it from fal-
ling.
9.
to piston pump. Remove gear pump from machine.
Remove two (2) cap screws that secure gear pump
10.If
hydraulic fittings are to be removed from gear
pump, mark fitting orientation to allow correct assembly.
Remove fittings from pump and discard O--rings.
Groundsmaster 5900/5910
Page 4 -- 69
Hydraulic System
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