Gear Pump Service - Toro Groundsmaster 4000-D Service Manual

Gear Pump Service

7
5
3
2
6
4
1
1. Front cover
2. Dowel pin (4 used)
3. Pressure seal
4. Back- -up gasket
5. Front thrust plate
6. Seal (8 used)
7. Front body
8. Idler gear
9. Drive shaft
Disassembly (Fig. 58)
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 plates for each pump section together; do not
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. Use a marker to make a diagonal line across the
gear pump for assembly purposes (Fig. 59).
Hydraulic System
13
11
9
10
8
19
10. Thrust plate (7 used)
11. Dowel pin (6 used)
12. Splined connecting shaft (3 used)
13. Flange (3 used)
14. Back- -up gasket
15. Pressure seal
16. Drive gear
17. Idler gear
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16
15
17
14
12
21
22
20
Figure 58
DIAGONAL LINE
18
24
23
33 ft- -lb
(45 N- -m)
18. Body
19. Body
20. Idler gear
21. Drive gear
22. Rear body
23. Rear cover
24. Washer (4 used)
25. Cap screw (4 used)
Figure 59
Groundsmaster 4000--D/4010--D
25