Greensmaster 3250--D Hydraulic SystemPage 4 -- 6 3
Piston Pump Removal (Fig. 40)
1. Park machine on a level surface, engage parking
brake,lowercuttingunitsandstopengine.Removekey
from the ignition switch.
CAUTION
Before continuing further, read and become fa-
miliar with General Precautions for Removing
and Installing Hydraulic System Components.
2. Removemufflertoallowpumpremoval(Fig.43).Re-
fer to Exhaust System in the Service and Repairs sec-
tion of Chapter 3 -- Diesel Engine for additional
information on muffler removal.
3. Disconnect the traction control cable ball joint and
jam nuts from the neutral arm. Position traction cable
away from the pump assembly.
4. Thoroughlycleanhydraulichoseendsandfittingson
gear and piston (traction) pumps to prevent hydraulic
system contamination.
5. Label all hydraulic hose connections on gear and
piston pumps for assembly purposes.
6. Clamp pump inlet hose (item 10) to prevent draining
the h ydraulic reservoir.
7. Loosen hose clamp and remove inlet hose from the
gear pump.
8. Disconnect hydraulic hoses from fittings on pump
assembly.Allowhosesto drainintoa suitablecontainer.
Plug hoses and fittings to prevent contamination.
CAUTION
Supportthe pistonpumpwhenremovingitssup-
porting fasteners to prevent it from falling and
causing personal injury.
9. Support pump assembly to prevent it from falling.
10.Remove two (2) cap screws (item 12) and flat wash-
ers (item 7) that secure pump assembly t o bellhousing.
Separatepumpassemblyfrom the pumpmountandre-
move from machine.
11.If necessary, remove coupler (item 8) from pump in-
put shaft. Locate and retrieve key (item 9).
12.Separategearpumpfromthepistonpump(seeGear
Pump in this section).
1. Piston pump
2. Traction cable
3. Jam nut (2 used)
4. Cable ball joint
Figure 41
2
1
4
3
1. Piston pump case drain 2. Gear pump suction port
Figure 42
2
1
Remove plugs before
installing gear pump to
piston pump
1. Muffler
2. Flat washer (6 used)
3. Lock nut (4 used)
4. Muffler bracket
5. Cap screw (2 used)
Figure 43
2
4
3
5
1
2
2
3
Hydraulic
System
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