Toro Sand Pro 5040 - Wheel Motor Service

Page 4 – 46Hydraulic System
Sand Pro & Infield Pro 3040/5040
Wheel Motor Service
1. Dirt seal
2. Housing assembly
3. Back–up washer
4. Seal ring
5. Shaft seal
6. Coupling shaft
7. Thrust bearing
8. Drive link
9. Woodruff key
10. Cap screw (7 used)
11. Plug
12. O–ring
13. Spring
14. Ball
15. End cover
16. Body seal (5 used)
17. Commutator seal
18. Commutator ring
19. Commutator
20. Manifold
21. Stator
22. Wear plate
23. Rotor
24. Vane
Figure 39
1
2
3
4
5
6
7
8
9
10
16
17
18
11
12
13
14
15
19
20
21
16
16
16
16
22
23
24
FRONT WHEEL MOTOR SHOWN
NOTE: The wheel motors used on Sand Pro and Infield
Pro machines have the same basic construction. The
motors do however have internal differences.
The front wheel motor (shown in Fig. 39) has a different
displacement (17.1 in
3
(280 cm
3)
per revolution) than
the rear motors and has a clockwise direction for the for-
ward direction. The front motor is also equipped with a
check valve that allows the motor to over run during tight
turns in the forward direction and by–passes flow in re-
verse.
The right and left rear wheel motors have the same dis-
placement (8.6 in
3
(141 cm
3)
per revolution) but have
different rotation for the forward direction: the right rear
has a clockwise drive direction for forward and the left
rear has a counter–clockwise direction. Additionally, the
left rear motor has a hot oil shuttle to bleed off a small
amount of hydraulic fluid for cooling of the closed loop
traction circuit.
NOTE: For repair of the wheel motors, see the Parker
Torqmotor
TM
Service Procedure (TC, TB, TE, TJ, TF,
TG, TH and TL Series) at the end of this chapter.