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2. Pull the spring loaded idler down and remove the fan
drive belt from the engine and the pump pulley
(Fig. 78).
3. Install the new belt around the engine and hydro pump
pulley (Fig. 78).
4. Pull the spring loaded idler down and align the belt.
Release the pressure on the spring loaded idler
(Fig. 78).
1
3
Figure 78
1. Fan belt
2. Idler pulley
Replacing and Tensioning the
Alternator Belt
Check alternator belt for wear after every 50 hours of
operation.
Replacing the Alternator Belt
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 rear engine panel (Fig. 73).
4. Remove the pump drive belt. Refer to Removing the
Pump Drive Belt on page 52.
5. Loosen the two bolts holding the alternator (Fig. 79).
6. Remove the belt from the pulleys and alternator
(Fig. 79).
7. Install a new belt around the pulleys and the alternator
(Fig. 79).
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2
m–7426
3. Engine pulley
4. Hydro pump pulley
Tensioning the Alternator Belt
1. Place a handle between the alternator and cylinder
block (Fig. 79).
2. Adjust the alternator to the outside until there is 3/8 to
1/2 inch (10 to 13 mm) deflections in the belt between
the engine and the alternator (Fig. 79).
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, torque the upper bolt to
170 in–lb (19 N m) and the bottom bolt to 45 ft–lb
(61 N m) (Fig. 79).
4
2
Figure 79
1. Alternator
2. Alternator belt
3. Handle
Adjusting the Parking Brake
Check the parking brake for proper adjustment.
1. Disengage the brake lever (lever down).
2. Measure the length of the spring. The measurement
should be 2-3/4 inch (70 mm) between the washers
(Fig. 80).
3. If an adjustment is necessary, loosen the jam nut below
the spring and tighten the nut directly below the yoke
(Fig. 80). Turn the nut until the correct measurement is
obtained. Tighten the two nuts together and repeat on
the opposite side of the unit.
4. Turn the nuts clockwise to shorten the spring length
and counterclockwise to lengthen the spring.
5. Engage the parking brake, lever up.
6. Measure the distance between the spring bracket and
the adjusting nut under spring bracket. The
measurement should be 1/4–5/16 inch (5–8 mm)
(Fig. 80).
53
3
5
1
6
m–7421
4. Deflection, 3/8 to 1/2 inch
(10 to 13 mm)
5. Top bolt
6. Bottom bolt
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