8-2
Chapter 8 PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
Belt and Belt Tension - Inspect and Adjust
Belt - Inspect
1. Inspect the belt visually for separation or damage. If any abnormality is found, replace the belt with a new one.
2. Inspect belt tension (deflection). Refer to "Ribbed Belt Tension Force" (8-3)., adjust the pressing force if it is not
average level when pushing the belt downward till 15 mm at the midway between pulleys with gauge.
Belt Tension (Alternator Side) - Adjust
1. Remove the belt cover.
2. Loosen all retaining bolts of the alternator and ad-
justing rod.
3. Loosen the upper and lower lock nuts on the ad-
justing rod.
Note: The lower nut on the adjusting rod has left-hand
threads.
4. Turn the adjusting rod to adjust the belt tension.
5. After tension adjustment, tighten the upper and
lower lock nuts.
6. Tighten all retaining bolts of the alternator and ad-
justing rod.
7. Reinstall the belt cover and front cover.
Fig. 8-1 Belt Tension (Alternator Side) - Adjust
Belt Tension (Air Cooler Water Pump Side) - Adjust
1. Loosen all the slide plate retaining bolts of tension
pulley bracket.
2. Loosen the lock nut of Air Cooler water pump ad-
justing bolt.
3. Turn the adjusting bolt to adjust the belt tension.
4. After adjusting deflection, fix lock nuts of adjusting
bolt.
5. Tighten all slide plate retaining bolts of Air Cooler
water pump tension pulley bracket.
Fig. 8-2 Belt Tension (Air Cooler water pump Side) -
Adjust
If defects such as cuts or surface separations are found during inspection, replace the belt.
Belts must be free from grease and oils. Grease and oils cause belts to slip and shorten their service life.
Excessive belt tension can cause rapid wear of the alternator bearing and shorten the service life of the belt.
Adjust the belt tension properly by following the procedures below.
Adjusting rod
Lock nut
(left-hand thread)
Lock nut
(right-hand thread)
Fixing bolt
Width Approx.
10 mm [0.39 in.]
Gauge
Pressing
force
15 mm [0.59 in.]
Ribbed belt
Thrust force
Gauge
15 mm
[0.59 in.]
Gauge width
approx. 10 mm [0.39 in.]
Fixing bolt
Lock nut
Lock nut
Fixing bolt
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