13-6
Chapter 13 ADJUSTMENT AND OPERATION
1.6 Belt and Belt Tension - Inspect and Adjust
1.6.1 Belt - Inspect
(1) Inspect the belt visually for separation or damage. If any defect is found, replace the belt with a new one.
(2) Inspect the tension (deflection) and pressing force of belt.
V-belt
Inspect the V-belt deflection by pressing it with approx 98 to 147 N {10 to 15 kgf} [22 to 33 lbf] force at the center of its span.
The belt deflection of 10 to 15 mm [0.39 to 0.59 in.] is normal.
If the deflection is out of standard, adjust the belt tension.
Ribbed belt
Refer to the table below. If the pressing force is not meet the standard, when pushing in the middle of pulleys with the gauge
and the belt deflexion is 15 mm, adjust the belt tension.
1.6.2 Belt Tension (Water Pump, Air cooler and Water
Pump) - Adjust
(1) Remove the belt cover.
(2) Loosen all the fixing bolts of tension pulley.
(3) Loosen the lock nut of adjusting bolt.
(4) Adjust the belt tension by turning the adjusting bolt.
(5) After the tension adjustment is completed, fix the lock
nut of adjusting bolt.
(6) Tighten all the fixing bolts of tension pulley.
(7) Install the belt cover.
Belt Tension (Water Pump, Air Cooler
and Water Pump) - Adjust
If any defects such as cuts or surface separations are found during inspection, replace the belt with a new one.
Keep the belt free from oil and grease. Oil or grease causes the belt to slip and shorten the service life.
Excessive belt tension can cause rapid wear of alternator bearing and shorten the service life of belt. Adjust the belt
tension correct following the procedures below:
Air cooler
water pump
Tension pulley
●Air cooler water pump
Tension pulley fixing bolt
Lock nut
Adjusting bolt
Tension pulley
Water pump
●Water pump
Tension pulley fixing bolt
Lock nut
Adjusting bolt
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