Echo L4-1.5L (1NZ-FE) (2000)
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14. REMOVE TIMING CHAIN COVER
a. Remove the 13 bolts and nut.
b. Using a torx wrench socket (E8), remove the stud bolt.
c. Remove the timing chain cover by prying the portions between the cylinder head and cylinder block with a screw driver.
NOTICE: Be careful not to damage the contact surfaces of the timing chain cover, cylinder head and cylinder block.
d. Remove the 2 O-rings from the cylinder block and oil pan No.1.
15. REMOVE CHAIN TENSIONER
Remove the 2 bolts and chain tensioner.
16. REMOVE CHAIN TENSIONER SLIPPER
17. REMOVE CHAIN VIBRATION DAMPER
Remove the 2 bolts and damper.
18. REMOVE TIMING CHAIN
INSPECTION
1. INSPECT TIMING CHAIN AND TIMING SPROCKETS
a. Using a vernier calipers, measure the length of 16 links with the chain dully stretched.
Maximum chain elongation: 123.2 mm (4.850 inch)
If the elongation is greater than maximum, replace the chain.
HINT: Make the same measurements pulling at 3 or more places selected at random.
b. Wrap the chain around the timing sprocket.
c. Using a vernier calipers, measure the timing sprocket diameter with the chain.
NOTICE: Vernier calipers must contact the chain rollers for measuring.
Minimum sprocket diameter (w/ Chain):
Camshaft: 96.2 mm (3.787 inch)
Crankshaft: 50.5 mm (1.988 inch)
If the diameter is less than minimum, replace the chain and sprockets.
