Toro Groundsmaster 4300-D Service Manual page 199

Inspecting the Cutting Deck Motor (continued)
Assembling the Cutting Deck Motor
Groundsmaster ® 4300-D
16226SL Rev C
g193306
1. Gear shaft spline
2. Gear teeth
3. Inspect the drive gears and idler gears for the following
A. Gear shafts must be free of rough surfaces and excessive wear at the
bushing points and sealing areas. Replace the gears if you find any
scoring, rough surfaces, or wear on the gear shafts.
B. Gear teeth must be free from excessive scoring and wear. Replace the
gears if you find broken or nicked gear teeth.
C. Gear face edge must be free from sharpness. The sharp edges of gears
will mill into the wear plates. Replace the gears if you find any sharp
gear face edge.
4. Inspect the wear plates for the following:
A. Bearing areas must not have excessive wear or scoring.
B. Face of the wear plates that are in contact with the gears must be free of
wear, roughness, or scoring.
C. Thickness of the wear plates should be equal.
5. Inspect the front flange and rear cover for damage or wear.
Note: When assembling the motor, check the marker line on each part to ensure
that the parts are properly aligned.
1. Lubricate new O-rings, pressure seals, and back-up gaskets, and wear plate
grooves with a thin coat of petroleum jelly. Lubricate all other internal parts
freely with clean hydraulic fluid.
2. Install new seals into the front flange
A. Press the shaft seal into the front flange until it reaches the bottom of
the bore.
B. Install the flange washer into the front flange and then install the retaining
ring into the groove of the front flange.
C. Install new dust seals into the front flange. The inner dust seal should
have the seal lip and spring toward the installed retaining ring. The outer
dust seal should have the seal lip and spring toward the outside of the
motor.
3. Place the front flange, seal side down, on a flat surface.
Figure 107
3. Gear shaft
4. Gear face edge
(Figure
Page 4–137
(Figure 107):
107) as follows:
Hydraulic System: Service and Repairs