Removal
Installation
1.
stop engine, engage parking brake, and remove key
from the ignition switch.
Park machine on a level surface, lower cutting units,
1. Carefully lower piston pump into the machine and
position it to the engine adapter plate. Support pump to
prevent it from falling while installing two (2) cap screws
and washers securing piston pump to engine adapter
plate. Torque screws from 85 to 95 ft--lb (115 to 128
N--m).
2.
removal, thoroughly clean exterior of pump assembly.
To prevent contamination of hydraulic system during
3.
pump by removing lock nut, spacer and cap screw.
Remove traction rod from control arm on piston
2.
Installation).
Install gear pump to piston pump (see Gear Pump
4.
pump.
Disconnect two wires from neutral switch on traction
3.
by installing cap screw, spacer and lock nut.
Position traction rod to control arm on piston pump
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
4.
pump.
Connect two wires to neutral switch on traction
5.
Remove plugs and caps from disconnected hydrau-
6.
Put a drain pan below the pump assembly. Remove
lic hoses and open ports of the pump assembly. Install
fittings and hoses to correct location on gear and piston
pumps.
hydraulic hoses and fittings connected to piston and
gear pumps. Putplugs orcaps on disconnected hydrau-
lic hoses to prevent contamination of the system. Put
plugs in open ports of pumps.
6. Install new filter and fill hydraulic reservoir with cor-
rect oil.
7.
Remove gear pump from machine (see Gear Pump
Removal).
7. Disconnect engine run solenoid electrical connector
to prevent engine from starting. Prime pumps by turning
ignition key switch to crank engine for 10 seconds. Re-
peat cranking procedure again.
8.
Support the piston pump to prevent it from falling
while removing two (2) cap screws and washers retain-
ing pump assembly to engine adapter plate. Carefully
pull pump assembly from adapter plate and raise it out
of the machine.
8. Connect engine run solenoid electrical connector,
start the engine, and check for proper operation.
9.
Properly fill hydraulic system (see Charge Hydraulic
System).
10.Stop
engine and check for hydraulic oil leaks. Check
hydraulic reservoir oil level.
Groundsmaster 4500--D/4700--D
Page 4 -- 63
Hydraulic System (Rev. A)
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Language | English |
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