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Belt Maintenance
Checking the Condition
and Tension of the Belts
Service Interval: Every 50 hours
1.
Shut off the engine, engage the parking brake,
remove the key, and wait for all moving parts to
stop before leaving the operating position.
2.
Raise the machine and support it with jack
stands with a 460 kg (1,015 lb) capacity.
3.
Check the auxiliary pump-drive belt condition
and tension
(Figure
Note:
The belt should deflect 1.3 cm (1/2 inch)
when 1.4 kg (3 lb) of force is applied to the belt
midway between the auxiliary pump and engine
pulleys. If the belt tension is too high or too low,
refer to
Adjusting the Auxiliary Pump-Drive Belt
(page
51).
4.
Check condition of the transmission-drive belt
(Figure
59).
Note:
The transmission belt has a
automatic-spring tensioner.
Figure 59
1. Transmission-drive belt
59).
2. Auxiliary pump-drive belt
Adjusting the Auxiliary
Pump-Drive Belt
1.
Shut off the engine, engage the parking brake,
remove the key, and wait for all moving parts to
stop before leaving the operating position.
2.
Loosen the locknut (3/8 inch) that secures the
auxiliary pump-idler pulley to the chassis of the
machine.
1. Auxiliary pump
2. Auxiliary pump-idler pulley
3. Locknut (3/8 inch)
3.
Adjust the belt tension as follows:
•
Move the auxiliary pump-idler pulley
rearward and outward to tighten the belt.
•
Move the auxiliary pump-idler pulley forward
and inward to loosen the belt.
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Note:
The belt should deflect 1.3 cm (1/2 inch)
when 1.4 kg (3 lb) of force is applied to the belt
midway between the auxiliary pump and engine
pulleys.
4.
Tighten locknut to 37 to 45 N∙m (27 to 33 ft-lb).
Replacing the
Transmission-Drive Belt
Note:
No adjustments are required for belt tension.
1.
Shut off the engine, engage the parking brake,
remove the key, and wait for all moving parts to
stop before leaving the operating position.
2.
Insert a breaker bar into the socket of the
belt-tension bracket and move the bracket
outward and forward
51
Figure 60
4. Adjustment slot (chassis)
5. Auxiliary pump-drive belt
(Figure
61).
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