Gear Pump Service - Toro Groundsmaster 4500-D Service Manual

Gear Pump Service

10
9
6
5
4
3
7
2
1
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)
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 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. 67).
Hydraulic System
16
15
14
13
12
9
11
21
8
22
20
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
Page 4 - - 82
18
17
11
21
Figure 66
DIAGONAL LINE
19
24
23
22
33 ft- -lb
(45 N- -m)
nd
19. Body (2 pump section)
rd
20. Body (3 pump section)
21. Drive gear
22. Idler gear
th
23. Rear body (4 pump section)
24. Rear cover
25. Cap screw (4 used)
26. Washer (4 used)
Figure 67
Groundsmaster 4500--D/4700--D
26
25