Toro Groundsmaster 4300-D Service Manual page 200

Assembling the Cutting Deck Motor (continued)
Hydraulic System: Service and Repairs
4. Install the pressure seals, flat side outward, into the grooves in the wear
plates. Follow by carefully placing the back-up gaskets, flat side outward,
between the pressure seals and the grooves in the wear plate.
5. Apply a light coating of petroleum jelly to the exposed side of the front flange.
6. Lubricate the drive gear shaft with clean hydraulic fluid.
7. Insert the drive end of the driveshaft through the wear plate with the pressure
seal side down and the open side of the pressure seal pointing to the inlet
side of the motor.
8. Carefully install the shaft into the front flange.
9. Lubricate the idler gear shaft with clean hydraulic fluid. Install the idler gear
shaft into the remaining position in the front wear plate. Apply a light coating
of clean hydraulic fluid to the gear faces.
10. Install the rear wear plate with a pressure seal side up and the open side of
pressure seal pointing to the inlet side of the motor.
11. Apply a light coating of petroleum jelly to new O-rings and O-ring grooves in
the body. Install new O-rings to the body.
12. Install the locating dowels in the body. Align the marker line on the body
and front flange.
Do not dislodge the seals during installation.
13. Gently slide the body onto the assembly and align the dowels with firm
hand pressure.
14. Check that the surface of the rear wear plate is slightly below the face of
the body.
Note: If the wear plate is not below the body, check the assembly for a
shifted pressure seal, back-up gasket, or O-ring. Correct the shifting before
you proceed.
15. Apply a light coating of petroleum jelly to the exposed side of the rear cover.
16. Use the marker line for proper location and place the rear cover on the
assembly, and align the dowels with firm hand pressure.
17. Install the 4 bolts with 4 washers and tighten them by hand.
When you clamp the motor in a vise, clamp the front flange only to
prevent damage. Also, use a vise equipped with soft jaws.
18. Clamp the front flange of the motor in a vise equipped with soft jaws.
19. Alternately torque the bolts to 45 N∙m (33 ft-lb).
20. Remove the motor from the vise.
21. Put a small quantity of clean hydraulic fluid in the inlet of the motor and rotate
the driveshaft away from the inlet for 1 revolution. If there is any binding,
disassemble the motor and check for assembly problems.
IMPORTANT
IMPORTANT
Page 4–138 Groundsmaster ® 4300-D
16226SL Rev C