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Chapter 8 PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
Belt and Belt Tension - Inspect and Adjust
If defects such as cuts or surface separations are found during inspection, replace the belt.
Keep oil and grease away from the belt. They may cause the belt to slip and shorten the 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 accurately by following the procedures below.
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) and pressing force.
V-belt
Push the belt downward at the midway between pulleys with approximately 98 to 147 N {10 to 15 kgf} [22.05 to
33.05 lbf]. If the deflection is 10 to 15 mm [0.39 to 0.59 in.], the tension is correct. If the deflection of belt is not within
the standard, adjust the belt tension.
Ribbed belt
Refer to Table 8-1
"Ribbed Belt Tension Force"
belt downward till 15 mm [0.59 in.] 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 plate.
3. Move the alternator to adjust the belt tension.
4. After adjusting, tighten all retaining bolts of the al-
ternator and adjusting plate.
5. Install the belt cover.
Belt Tension (Water Pump Side) - Adjust
1. Loosen all water pump tension bracket retaining bolts.
2. Loosen the lock nut of water pump adjusting bolt.
3. Turn the water pump adjusting bolt to adjust the belt tension.
4. After adjusting deflection, fix the lock nut.
5. Tighten all retaining bolts of the water pump tension bracket.
8-2
, adjust the pressing force if it is not average level when pushing the
Fan side
Fig. 8-1 Belt and Belt Tension - Inspect and Adjust
Mounting bolt
Alternator side
Adjusting bolt
Adjusting plate
Adjusting bolt
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