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Inspecting the Gear Pump
Assembling the Gear Pump
Field Pro® 6040
22267SL Rev A
If internal pump parts are found to be worn or damaged, gear pump replacement
is necessary.
1. Remove any nicks and burrs from all parts with emery cloth.
Use eye protection such as goggles when using compressed air.
2. Clean all parts with solvent. Dry all parts with compressed air.
g320252
1.
Gear shaft spline
2.
Gear shaft
3. Inspect the drive gears and the idler gears for the following:
A. The gear shafts should be free of rough surfaces and excessive wear at
the thrust plate points and sealing areas.
B. The gear teeth should be free of excessive scoring and wear.
C. Inspect each gear face edge for sharp edges or burrs. Remove sharp
edges or burrs from the gear faces with emery cloth.
4. Inspect the thrust plates for the following:
A. The bearing areas should not have excessive wear or scoring.
B. The face of the thrust plate that contacts the gears should be free of
roughness, scoring, or excessive wear.
C. The thickness of each set of thrust plates should be equal.
5. Inspect the front cover and the rear cover for damage or wear.
Refer to
Figure 50
for this procedure.
1. Lubricate the body seals, pressure seals, uni-rings and the thrust plate
grooves with a thin coat of petroleum jelly. Lubricate all other internal parts
freely with clean hydraulic oil.
2. Install a new seal and retaining ring in the front cover.
3. Place the front cover, seal side down, on a flat surface.
CAUTION
Figure 52
3.
Gear teeth
4.
Gear face edge
Page 5–69
Hydraulic System: Service and Repairs
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