Timing Chain: Testing and Inspection

1NZ-FE ENGINE MECHANICAL: TIMING CHAIN: INSPECTION

1. INSPECT CHAIN SUB-ASSEMBLY

(a) Using a spring scale, apply 140 N (14.3 kgf, 31.5 lb) to the timing chain and measure its length.





Maximum chain elongation:

123.2 mm (4.850 in.)

(a) If the elongation is greater than the maximum, replace the chain.

HINT
Perform the same measurement at 3 or more random places and calculate the average length.