Gear Pump Service
5
4
8
3
14
13
12
1
11
25 to 28 ft--lb
(34 to 38 N--m)
2
15
10
4
4
23
16
17
18
19
24
1
3 14
9
22 12
7
4
20 21
21
(29
to 24 ft--lb
to 33 N--m)
28
29
4
27
25
26
4
21
(29
to 24 ft--lb
to 33 N--m)
6
Figure 44
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Shaft seal
Washer
Cap screw (8 used)
O--ring
11. Drive gear assembly
21. Idler gear
22. Key
12. Wear plate
13. Pressure seal
14. Backup gasket
15. Front plate assembly
16. Idler gear
17. Key
18. Drive gear
23. Front adapter plate
24. Rear adapter plate
25. Idler gear
Washer (8 used)
Proportional valve
Plug
26. Rear body
27. Backplate assembly
28. Plug
Plug
O--ring
19. Middle body
20. Drive gear
29. O--ring
Front body
Disassembly (Fig. 44)
NOTE: To maintain maximum pump efficiency, keep
body, gears and wear plates for each section together.
DO NOT mix parts between different sections.
Work in a clean area as cleanliness is extremely impor-
tant when repairing hydraulic pumps. Thoroughly clean
the outside of pump. After cleaning, remove port plugs
and drain oil from pump.
IMPORTANT: Avoid using excessive clamping
pressure on the pump housing to prevent distorting
the housing.
1.
Scribe a line, at an angle, across front plate (15), bo-
dies (10, 19, 26), adapter plates (23, 24) and backplate
This will assure proper reassembly.
2. Clamp pump in vise, shaft end up and remove the
eight cap screws (3).
(27).
Hydraulic System
Page 4 -- 54
Groundsmaster 4100--D
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| Language | English |
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