Toro ProLine H800 Service Manual page 158

Inspecting the Gear Pump
Hydraulic System: Service and Repairs
1. Remove any nicks and burrs from all the gear pump parts with emery cloth.
2. Clean all the gear pump parts with solvent and dry them with compressed air.
g293634
1. Gear shaft spline
2. Gear face edge
3. Inspect the drive gear and idler gear for the following
A. Gear shaft should be free of scoring, rough surfaces, and excessive wear
at the bushing points and sealing areas.
B. Gear teeth should be free from excessive scoring, broken or nicked gear
teeth, and visual wear.
C. Inspect the gear face edge for sharpness because sharp edges of gears
will mill into the wear plates.
D. Bearing areas should not have excessive wear or scoring.
E. Face of the bearing blocks that are in contact with gears should be free of
wear, roughness, or scoring.
4. Inspect the front flange and body for damage or wear.
5. Replace the entire pump assembly if the internal parts are excessively worn
or damaged.
Figure 76
3. Gear teeth
4. Gear shaft
Page 5–90
(Figure 76):
ProLine H800
19241SL Rev A