Checking Tensioner Spring Tension
A belt tension gauge will not give an accurate measure of the belt tension when automatic spring tensioner is used. Measure tensioner spring tension using a torque wrench and procedure outlined below:
1.
Release tension on belt using a long-bar and adequate wrench applied on cap screw (C) provided with left-hand thread. Remove belt from pulleys.
2.
Release tension on cap screw (C), then remove bar and wrench.
3.
Put a mark (A) on swing arm of tensioner as shown.
4.
Measure 20 mm (0.79 in.) from (A) and put a mark (B) on tensioner mounting base.
5.
Rotate the swing arm using a torque wrench applied on cap screw (C) until marks (A and B) are aligned.
NOTE:
Before rotating, the torque wrench must be aligned with the tensioner fastening cap screw.
6.
Record torque wrench measurement and compare with specification below. Replace tensioner assembly as required.
Specification
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Spring Tension
-Torque
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20 N·m (14.8 lb-ft)
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