xD L4-1.8L (2ZR-FE) (2008)
Required Tools & Equipment
Repair Procedure
Confirm the customer complaint. See attached video for an example of the engine knock/rattle noise:
1. If a knock/rattle noise is present replace the camshaft timing gear assembly.
HINT
This repair is simplified by performing the following:
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DO NOT remove the engine - complete the repair in the vehicle.
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Set No.1 cylinder to TDC/compression.
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DO NOT remove the timing cover or camshaft housing sub-assembly.
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Loosen and remove all camshaft bearing caps. Remove the No.1 camshaft bearing cap and No.2 timing chain vibration damper as an assembly - DO
NOT separate.
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Remove the intake camshaft with the camshaft gear intact and tie the timing chain to keep tension on the crankshaft timing gear, avoiding separation.
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Ensure the new camshaft gear is unlocked (advanced position) prior to installation and lock the gear (fully retarded position) AFTER tightening to
proper torque.
Refer to the Technical Information System (TIS) applicable model and model year Repair Manual:
2008 Scion xD: