Disconnect the battery negative terminal.
Loosen the alternator mounting bolts (A) and then turn the adjusting bolt (B) counterclockwise to loose the drive belt tension.
Tightening torque
M8 bolt :
19.6 ~ 26.5 Nm (2.0 ~ 2.7 kgf.m, 14.5 ~ 19.5 Ib-ft)
M10 bolt :
29.4 ~ 41.2 Nm (3.0 ~ 4.2 kgf.m, 21.7 ~ 30.4 Ib-ft)
Remove the drive belt (A).
Install in the reverse order of removal.
Visually check the belt for excessive wear, frayed cords etc.
If any defect has been found, replace the drive belt.
Cracks on the rib side of a belt are considered acceptable. If the belt has chunks missing from the ribs, it should be replaced.
Measure the drive belt tension. If necessary, drive belt and adjust.
Measure the belt tension using a mechanical tension gauge or a sonic tension meter.
Tension
New belt :
686.5 ~ 784.5 N (70.0 ~ 80.0 kgf, 154.3 ~ 176.4 lbf)
Used belt :
490.3 ~ 588.4 N (50.0 ~ 60.0 kgf, 110.2 ~ 132.3 lbf)
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.
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).
After releasing the handle (A), read a value on the dial pointed by the indicator (B).
Input the belt specifications into the tension meter.
Belt type | Location of measurement | Input data | ||
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 | 178.7 |
Measurement of S (Span) : Caculate average value after measuring the distance 3~4 times.
D : Idlerd
d : Alternator pulley
Locate the micro phone (B) close to the center of belt span (A) and bounce the belt by finger 2~3 times. Read a value on the display.
Loosen the mounting bolts (A).
Tighten the adjusting bolt (B) counterclockwise in loose tension ; loosen the bolt clockwise in high tension.
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)
