Replacing The Hydraulic Pump Drive Belt - Toro 74978 Operator's Manual

Figure 75
1. Position the belt cover
2. Slide belt cover under the
side catches
Replacing the Hydraulic Pump
Drive Belt
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Remove mower belt. Refer to Replacing the Mower
Belt in Maintenance.
4. Raise the machine and support it with jack stands.
5. Use a ratchet in the square hole in the idler arm to
remove the idler spring (Figure 76).
6. Unhook the idler spring from the frame (Figure 76).
7. Remove the belt from the hydraulic unit drive pulleys
and the engine pulley
8. Install the new belt around engine pulley and the two
drive pulleys.
9. Using a ratchet in the square hole in the idler arm,
install the idler spring to the frame (Figure 76).
10. Install the mower belt. Refer to Replacing the Mower
Belt.
3. Ensure the tab is under
the metal catch
1. Idler pulley
2. Clutch pulley
3. Pump drive belt
4. Right hand hydraulic pump
pulley
50
Figure 76
5. Left hand hydraulic pump
pulley
6. Square hole in idler arm
7. Idler spring