Servicing The Wheel Motors - Toro Sand Pro 3040 Service Manual

Servicing the Wheel Motors

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1. Dirt and water seal
2. Housing
3. Back-up washer
4. Back-up ring
5. Shaft seal
6. Coupling shaft
7. Thrust bearing
8. Drive link
Sand Pro ® 3040 and 5040
20251SL Rev A
(Front Wheel Motor Shown)
9. Cap screw (7 each)
10. Plug
11. O-Ring
12. Spring
13. Ball
14. End cover
15. Body seal (5 each)
16. Commutator seal
The wheel motors used on the Sand Pro machines have the same basic
construction. The motors do however have internal differences that make them
unique to their location on the machine (front, left rear, and right rear).
The front wheel motor has a 280 cc (17.1 cu inch) per revolution displacement
and rotates in the clockwise direction for forward operation. The front motor is
also equipped with a check valve that allows the motor to over run during tight
turns in forward operation and by-passes flow in reverse operation.
The right and left rear wheel motors have a 141 cc (8.6 cu inch) per revolution
displacement but have different rotation for forward operation. The right rear
motor has a clockwise drive direction for forward operation and the left rear
motor has a counter-clockwise direction for forward operation. Additionally, the
left rear motor has a hot oil shuttle valve to bleed off a small amount of hydraulic
fluid for cooling the closed loop traction circuit.
Figure 56
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Page 5–81
Commutator ring
Commutator
Manifold
Stator
Wear plate
Rotor
Vane (7 each)
Hydraulic System: Service and Repairs