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Groundsmaster 4500--D/4700--DHydraulic System Page 4 -- 82
Gear Pump Service
1. Dust seal
2. Retaining ring
3. Flange washer
4. Shaft seal
5. Front cover
6. Dowel pin (16 used)
7. Pressure seal
8. Back--up gasket
9. Thrust plate (8 used)
10. Seal (8 used)
11. Idler gear
12. Drive shaft
13. Back--up gasket
14. Pressure seal
15. Front body (first pump section)
16. Splined connecting shaft (3 used)
17. Flange
18. Drive gear
19. Body (2
nd
pump section)
20. Body (3
rd
pump section)
21. Drive gear
22. Idler gear
23. Rear body ( 4
th
pump section)
24. Rear cover
25. Cap screw ( 4 used)
26. Washer (4 used)
Figure 66
10
11
8
15
5
3
19
20
21
22
23
24
9
7
25
26
6
1
2
16
17
18
4
14
13
12
9
33 ft--lb
(45 N--m)
11
22
21
Disassembly (Fig. 66)
NOTE: The gear pump must be replaced as a complete
assembly. Individual gears, housings and thrust plates
are not available separately. Disassemble gear pump
for cleaning, inspection and seal replacement only.
IMPORTANT: Keep bodies, gears, flanges and
thrust platesfor each pump section together; donot
mix parts between pump sections.
1. Plug pump ports and thoroughly clean exterior of
pump with cleaning solvent. Make sure work area is
clean.
2. Useamarkertomakeadiagonal line across the
gear pump for assembly purposes (Fig. 67).
Figure 67
DIAGONAL LINE