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Greensmaster 3100
Page 4 – 41.5
Repairs
Rev. D
3. Inspect drive gear, idler gear and bearing blocks
(Fig. 18f) for the following:
A. Gear shafts should be free of rough surfaces and
excessive wear at bushing points and sealing areas.
Scoring, rough surfaces, or wear on gear shafts indi-
cates need for replacement.
B. Gear teeth should be free of excessive scoring
and wear. Any broken or nicked gear teeth must be
replaced.
C. Inspect gear face edge for sharpness. Sharp
edges of gears will mill into bearing blocks and, thus,
must be replaced.
D. Bearing areas of bearing blocks should not have
excessive wear or scoring.
E. Face of bearing blocks that are in contact with
gears should be free of wear, roughness or scoring.
4. Inspect front flange and rear cover for damage or
wear.
Reassembly
NOTE: When reassembling the motor, check the identi-
fication marks made during disassembly to make sure
the parts are properly aligned during reassembly.
1. Lubricate o–rings, pressure seals, back–up gaskets,
and seal grooves with a thin coat of petroleum jelly. Lu-
bricate all other internal parts freely with clean hydraulic
oil.
2. Install new shaft seal into front flange.
3. Install lubricated pressure seals into the grooves in
the front flange and rear cover. Follow by carefully plac-
ing the back–up rings into the grooves.
4. Install new o–rings to the body.
5. Lubricate gear faces and bearing surfaces of drive
gear, idler gear, and bearing blocks. Carefully assemble
bearing blocks and gears noting identification marks
made during disassembly.
6. Position the motor body on its side. Carefully slide
bearing block and gear assembly into the body cavity
using identification marks made during disassembly.
7. Remove any excess lubrication from mating sur-
faces of body, rear cover, and front flange. Make sure
that these surfaces are clean and dry.
8. Install dowel pins in body.
IMPORTANT: Do not dislodge o–rings, pressure
seals, or back–up rings during final assembly.
9. Gently slide the rear cover onto the assembly using
marker or scribe mark for proper location. Firm hand
pressure should be sufficient to engage the dowel pins.
10.Position the motor with rear cover downwards. Care-
fully slide the front flange onto the assembly using mark-
er or scribe mark for proper location.
11. Install the four cap screws and hand tighten.
IMPORTANT: Avoid using excessive clamping
pressure on the motor housing to prevent distorting
the housing.
12.Place motor front flange in a vise and alternately
torque the cap screws from 33 to 40 ft–lb (45 to 55 N–m).
13.Put a small amount of hydraulic oil in port on motor
and rotate driveshaft one revolution. Protect the shaft if
using a pliers. If drive shaft binds, disassemble motor
and repeat assembly process.
14.Remove motor from vise.