Service Manual

Groundsmaster 4500--D/4700--D Hydraulic System (Rev. A)Page 4 -- 83
Removal
1. Park machine on a level surface, lower cutting units,
stop engine, engage parking brake, and remove key
from the ignition switch.
2. Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
NOTE: To ease reassembly, tag the hydraulic hoses to
show their c orrect position on the axle motor. Also, clean
the port areas of the motor before disconnecting hydrau-
lic lines.
3. Disconnect hydraulic hoses from motor. Put caps or
plugs on ports to prevent contamination.
IMPORTANT: Support axle motor to prevent motor
from falling during removal.
4. Remove motor using Figure 73 as a guide.
Installation
1. If removed, install pinion gear to axle motor.
2. Install o--ring onto motor. Position motor to rear axle
assembly making sure that arrows on the side of motor
case point upward. Align gear teeth and slide motor into
place.
3. Secure motor to axle with cap screws and flat wash-
ers. Torque screws from 59 to 73 ft--lb (80 to 99 N--m).
4. Remove plugs from ports. Attach hydraulic hoses to
axle motor.
5. Fill hydraulic reservoir with hydraulic fluid as re-
quired (see Traction Unit Operator’s Manual).
6. After assembly is completed, verify that hydraulic
hoses and fittings do not contact anything.
Hydraulic
System