Maintenance RD 27
76 wc_tx000815gb.fm
5.22 Adjusting Alternator Belt Tension
Prerequisites
Machine shut down
Engine cool
When
Every 250 hours of service or every 3 months
l
Procedure
Follow the procedure below to inspect the alternator belt.
1. Open the engine compartment.
2. Remove the fan guard and shroud.
3. Apply 110 N (25 lbs.) of force to the belt (c) midway between the pulleys.
Correctly adjusted belts will deflect 13–19 mm (1/2–3/4 in.).
4. To adjust the belt, loosen mounting bolts (a) and (b).
5. Move the alternator (d) to adjust the tension.
6. Tighten the mounting bolts (a) and (b) when the tension is correct. Torque
mounting bolt (b) to 45–55 Nm (33–41 ft.lbs.).
Note: When installing a new belt, check and adjust the belt tension after the first 30
minutes of operation.
7. Re-install the fan guard and shroud.
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