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Belt Maintenance
Servicing the Alternator Belt
Service Interval: After the first 10 hours
Every 200 hours
1. Check tension by depressing belt midway of span
with 18 lb of force. Belt should deflect 3/8 in. to
1/2 in. If deflection is incorrect, proceed to step 2.
If correct, continue operation.
2. Loosen bolt securing brace to engine and bolt
securing alternator to brace (Figure 52).
Figure 52
1. Alternator belt
3. Insert pry bar between alternator and engine and pry
out on alternator.
4. Hold alternator in position after proper belt tension
setting is achieved and tighten alternator and brace
bolts to secure adjustment.
To Replace Belt:
1. Loosen bolts securing brace to engine and alternator
to brace (Figure 52).
2. Remove two bolts holding the transmission drive
shaft coupler to the engine pulley. Do not remove
the drive shaft from the transmission.
3. Move the drive shaft out of the way sot that the fan
belt can be removed and a new belt installed. Install
the new belt around the fan before positioning it
around the drive pulley.
4. Reinstall the drive shaft. Tension the new belt.
5. Check the belt tension after one day's use.
2. Tension adjustment bolt
Servicing the PTO Belt
Service Interval: After the first 10 hours
After the first 50 hours
Every 200 hours
1. Turn engine off and remove the ignition key. Set the
parking brake. Raise the engine hood and allow the
engine to cool.
2. Loosen the tensioning rod jam nut (Figure 53).
1. Tensioning spring
2. Tensioning rod jam nut
3. Use a 1/2" wrench to tighten or loosen the belt
tensioning spring (Figure 53). Adjust spring to a
length of 2-7/8" (73 mm).
4. Tighten jam nut.
To Replace Belt:
1. Turn off the engine and remove the ignition key.
Set the parking brake. Raise the hood and allow the
engine to cool.
2. Loosen the tensioning rod jam nut (Figure 53).
3. Using a 1/2" wrench, loosen the belt tensioning
spring (Figure 53) all the way.
4. Rotate PTO pulley toward the engine and remove
the belt.
5. Install the new PTO belt and re–tension the pulley
spring to 2–7/8" (73 mm) (Figure 53).
6. Tighten the jam nut (Figure 53) and close the hood.
45
Figure 53
3. Tension adjusting bolt
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