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Groundsmaster 4000--DHydraulic System Page 4 -- 108
Engine Cooling Fan Motor Service
1. Flange washer
2. O--ring
3. Front flange
4. Dust seal
5. Retaining ring
6. Front wear plate
7. Shaft seal
8. Backup gasket
9. Pressure seal
10. Rear wear plate
11. Body
12. Idler gear
13. Cap screw (4 used)
14. Dowel (2 used)
15. Drive gear
16. Washer (4 used)
Figure 73
8
7
4
3
2
5
6
9
10
11
9
12
13
8
14
16
15
14
1
(45 N--m)
33 ft--lb
Disassembly (Fig. 73)
1. Plug motor ports and clean the outside of the motor
thoroughly. After cleaning, remove plugs and drain any
oil out of the motor.
2. Use a marker to make a diagonal line across the
front flange and body for assembly purposes (Fig. 74).
IMPORTANT: Prevent damage when clamping the
fan motor into a vise; clamp on the front flange only.
Also, use a vise with soft jaws.
3. Clamp front flange of motor in a vise with soft jaws
with the shaft end down.
4. Loosen cap screws from the rear cover.
5. Remove motor from the vise. Turn motor so that the
shaft end is facing down. Remove cap screws.
6. Carefully remove body. Lift body straight up to re-
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.
Figure 74
MARKER LINE
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.
7. Carefully remove rear wear plate, idler gear, drive
gear and front wear plate from the front flange.