Gear Pump - Toro Groundsmaster 4700-D Service Manual

Gear Pump

3
11
8
12
8
5
RIGHT
FRONT
1. Flat washer (2 used)
2. Cap screw (2 used)
o
3. 90 hydraulic fitting
4. Hydraulic tee fitting
5. O- -ring
6. Gear pump assembly
7. Piston pump assembly
o
8. 90 hydraulic fitting
Removal (Fig. 56)
1. Park machine on a level surface, lower cutting
decks, stop engine, engage parking brake and remove
key from the ignition switch.
2. Raise seat and secure it with prop rod to gain access
to gear pump.
3. Drain the hydraulic reservoir into a suitable contain-
er.
Hydraulic System
77 to 93 ft- -lb
(105 to 126 N- -m)
18
13
18
11
17
16
1
2
19
20
11
10
9. Coupler
o
10. 90 hydraulic fitting
11. O- -ring
12. O- -ring
o
13. 45 hydraulic fitting
14. Cap screw
15. Washer
16. O- -ring
Page 4 - - 72
14
7
9
16
22
6
103 to 118 ft- -lb
(140 to 160 N- -m)
Figure 56
4. To prevent contamination of hydraulic system during
removal, thoroughly clean exterior of pump and fittings.
5. Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
6. Disconnect hydraulic lines from gear pump and put
caps or plugs on open hydraulic lines and fittings. Label
disconnected hydraulic lines for proper assembly (Fig.
57).
15
5
4
12
23
21
17. Spacer
18. O- -ring
19. O- -ring
20. Straight hose fitting
21. O- -ring
22. Straight hydraulic fitting
23. O- -ring
Groundsmaster 4500--D/4700--D