Removal (Fig 43)
Park machine on a level surface, lower cutting
decks, stop engine, engage parking brake, and remove
key from the ignition switch.
Installation (Fig 43)
1.
1. Lubricate new o--rings with clean hydraulic oil and
position on pump.
2.
Slide coupler onto the piston pump output shaft.
2.
to gear pump.
Raise seat and secure it with prop rod to gain access
3.
Position o--rings and spacer to gear pump. Align
gear teeth and slide gear pump input shaft into coupler.
Secure gear pump to piston pump with two (2) cap
screws and washers.
3.
al).
Drain the hydraulic reservoir (see Operator’s Manu-
To prevent contamination of hydraulic system during
4.
pump removal, thoroughly clean exterior of pump and
fittings.
4. Remove caps or plugs from hydraulic lines and fit-
tings. Install hydraulic lines to gear pump.
5.
Replace hydraulic filter and fill hydraulic reservoir
5.
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
Read the General Precautions for Removing and
with new hydraulic oil.
6.
Disconnect engine run solenoid electrical connector
to prevent engine from starting. Prime the hydraulic
pumpbyturningtheignitionkeyswitchtostartandcrank
the engine for 15 seconds. Wait 15 seconds and repeat
cranking procedure again.
6.
caps or plugs on open hydraulic lines and fittings. Label
disconnected hydraulic lines for proper reassembly.
Disconnect hydraulic lines from gear pump and put
7.
ling.
Support gear pump assembly to prevent it from fal-
7. Connect engine run solenoid electrical connector,
start the engine, and check for proper operation.
8.
Removetwo(2)capscrewsandwashersthatsecure
8. Properly fill hydraulic system (see Charge Hydraulic
System in the Service and Repairs section of this chap-
ter).
gear pump to piston pump. Remove gear pump, cou-
pler, spacer,and o--rings from machine through the seat
opening.
9.
Stop engine and check for hydraulic oil leaks. Check
hydraulic reservoir oil level.
Groundsmaster 4100--D
Page 4 -- 53
Hydraulic System
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