Drive Belt Tension Measurement And Adjustment

WARNING: This page is about a different variant/trim than selected.

Belt tension measurement

Measure the belt tension using a mechanical tension gauge or a sonic tension meter.

Tension

New Belt:

961.0 ~ 980.7 N (98.0 ~ 100.0 kgf, 216.1 ~ 220.5 lbf)

Used Belt:

637.4 ~ 735.5 N (65.0 ~ 75.0 kgf, 143.3 ~ 165.3 lbf)

CAUTION:

If the engine has run for 5 minutes or more, the belt tension must be adjusted as a used belt.
When installing the V-ribbed belt, all grooves on the pulley should be covered with belt ribs.
A loose belt causes slip noise.
Too tight belt cause bearing of alternator and water pump to damage.

Using a mechanical tension gauge (BT-33-73F, BTG-2 type)

While pressing the handle (A) of the gauge, insert the belt (B) between pulley and pulley (or idler) into the gap between spindle (C) and hook (D).

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After releasing the handle (A), read a value on the dial pointed by the indicator (B).

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Using a sonic tension meter (U-505/507 type)

Input the belt specifications into the tension meter.

Belt type	Location of measurement	Input data
Belt type	Location of measurement	M (Mass, g/m.rib)	W (Width, rib)	S (Span, mm)
With A/C	Crankshaft pulley to A/C compressor pulley	13.4	6	178.9
Without A/C	Idler to alternator pulley	13.4	6	Actual measurement value

NOTE:

Measurement of S (Span): Calculate average value after

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d: Alternator pulley

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If adjustment is necessary

Loosen the mounting bolts (A).
Tighten the adjusting bolt (B) clockwise in loose tension; loosen the bolt counterclockwise in high tension.

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Recheck tension of the belt.
After adjusting tension, tighten the through bolts.
Tightening torque

12 mm (0.47 in) bolt:

19.6 ~ 26.5 N.m (2.0 ~ 2.7 kgf.m, 14.5 ~ 19.5 Ib-ft)

14 mm (0.55 in) bolt:

29.4 ~ 41.2 N.m (3.0 ~ 4.2 kgf.m, 21.7 ~ 30.4 Ib-ft)