6.
Remove motor from the vise and remove cap
screws.
MARKER LINE
7.
8.
move. Make sure the rear wear plate remains on the
drive and idler gear shafts. Remove and discard O--
rings from the body. Locate and retrieve dowel pins.
Remove rear cover from the body.
Carefully remove body. Lift body straight up to re-
IMPORTANT: Note position of the open and closed
side of the wear plates before removing. Also, iden-
tify wear plates (front and rear) with a marker for
proper assembly.
9.
gear and front wear plate from the front flange.
Carefully remove rear wear plate, idler gear, drive
Figure 74
10.Remove
and discard back--upgaskets and pressure
seals from wear plates.
3
11.
Turn front flange over, with seal side up.
2
IMPORTANT: Make sure not to damage the front
flange counter bore when removing the seals from
the front flange.
12.Carefully
remove dust seal, retaining ring, flange
washer and shaft seal from the front flange (Fig. 76).
Discard seals.
1
4
Inspection
1.
Remove any nicks and burrs from all parts with
Figure 75
emery cloth.
1.
2.
Gear shaft spline
Gear shaft
3.
4.
Gear teeth
Gear face edge
4.
Inspect wear plates for the following:
CAUTION
A. Bearingareasshouldnothaveexcessive wearor
scoring.
Use eye protection such as goggles when using
compressed air.
B. Face of wear plates that are in contact with gears
should be free of wear, roughness or scoring.
2.
Clean all parts with solvent. Dry all parts with com-
pressed air.
C. Thickness of wear plates should be equal.
3.
(Fig. 75):
Inspect drive gears and idler gears for the following
5.
wear.
Inspect front flange and rear cover for damage or
A. Gear shafts should be free of rough surfaces and
Assembly (Fig. 72)
excessive wear at bushing points and sealing areas.
Scoring, rough surfaces or wear on gear shafts indi-
cates need for replacement.
NOTE: When assembling the motor, check the marker
line on each part to make sure the parts are properly
aligned during assembly.
B. Gear teeth should be free of excessive scoring
and wear. Any broken or nicked gear teeth must be
replaced.
1. Lubricate O--rings,pressure seals, back--upgaskets
and wear plate grooves with a thin coat of petroleum jel-
ly. Lubricate all other internal parts freely with clean hy-
draulic oil.
C. Inspect gear face edge for sharpness. Sharp
edges of gears will mill into wear plates and, thus,
must be replaced.
Groundsmaster 5900/5910
Page 4 -- 101
Hydraulic System
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