Replacing And Tensioning The Alternator Belt - Toro Z580-D Z Master 74266CP Operator's Manual

Replacing and Tensioning the
Alternator Belt
Replacing the Alternator Belt
Service Interval: Every 50 hours
1. Disengage the PTO, move the motion control levers
to the neutral locked position 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 the 4 bolts holding the oil cooler shield to
the rear frame (Figure 70).
4. Remove the 3 bolts holding the engine straps to the
side of the machine (Figure 70).
Figure 70
1. Oil cooler shield
2. Bolts
5. Remove the 4 bolts holding the oil cooler and
position the oil cooler to the side (Figure 71).
6. Remove the 2 bolts holding the fan and fan plate to
the machine (Figure 71).
3. Engine straps
1. Oil cooler
2. Fan
7. Loosen the bottom bolt and remove the upper bolt
holding the alternator and cover (Figure 72).
8. Rotate the alternator cover to the side and remove
the belt from the pulleys and alternator.
9. Install a new belt around the pulleys and the
alternator (Figure 72).
10. Install the fan and fan plate to the machine with the
2 bolts previously removed (Figure 71).
11. Install the oil cooler with the 4 bolts previously
removed (Figure 71).
12. Install the oil cooler shield and engine straps to
the rear frame with the 4 bolts previously removed
(Figure 70).
13. Install the engine straps to the side of the machine
(Figure 70).
14. Tighten the bottom bolt and install the upper bolt
holding the alternator and cover (Figure 72).
Tensioning the Alternator Belt
1. Place a handle between the alternator and cylinder
block.
2. Adjust the alternator to the outside until there is
1/4 to 11/32 inch (7 to 9 mm) deflection in the belt
between the engine and the alternator pulleys with
22.1 lbs of force (10 kgf) (Figure 72).
3. Tighten the alternator bolts.
4. Check the deflection in the belt again and adjust the
belt if needed.
5. If the deflection is correct, tighten the bottom and
upper bolt (Figure 72).
49
Figure 71
3. Fan plate
4. Alternator belt