Engine - Rubbing Noise From Front Of Engine

Division: Automotive
Category: Technical

Section Title: Engine
TSB No. TS 21 03259

SUBJECT:
RUBBING NOISE COMING FROM FRONT (TIMING BELT COVER) AREA

MODEL(S):
FORENZA, FORENZA WAGON, RENO (RQ420)

YEAR:
2004~2008

CONDITION:
The timing belt cam sprocket may be rubbing the inner surface of the timing belt cover.

CAUSE:
The timing cover may be slightly warped causing contact with the cam sprockets.

CORRECTION:
Please remove the cover and grind 2 mm of material from the timing cover at the area where the sprocket has contacted and re-install the cover. Use the instructions for inspection and repair.





PART(S) INFORMATION:





WARRANTY CLAIM INFORMATION:





1. Make a record of the radio station presets.

2. Ensure the AT shift lever is in "Park" for AT transmissions, and the parking brake is applied for both 5 speed and AT vehicles.

3. Disconnect the battery negative cable.

4. Remove the air cleaner assembly by removing the two bolts and loosening the outlet hose clamp indicated in the illustration. Slip the outlet hose off of the air cleaner then lift the air cleaner out of the engine compartment.





5. Support the engine with the Engine Assembly Support Fixture DW1 10-060 and X-28467-560 Engine Assembly Support Channel or an equivalent engine support assembly





6. Remove the engine mount bracket nut on the frame side first. Then raise the engine until the bracket starts to rise. You will see the stud retract into the bracket.

7. Remove the remaining two nuts and bolt from the engine side, and remove the bracket.





8. Use a l5mm wrench to turn the tensioner bolt clockwise, releasing the tension on the serpentine accessory drive belt. Remove the belt.





9. Referring to the illustration, remove the timing belt cover by releasing the three clips at the top of the cover. Next remove the three bolts indicated. Tip the cover toward the fender to clear the engine mount bracket, and slide the cover up and out.





10. Looking closely at the area indicated in the illustration, inspect the timing cover for contact marks from the timing belt or cam sprockets. If evidence is found confirming the source of the noise, continue to the next page.





11. Mark the area with a wax pencil, white out, or anything that will be highly visible.

12. Use a high speed grinder to carefully remove 2mm of material from all the affected areas of the timing cover.

13. Reverse the removal procedure of the timing cover. Torque specs are highlighted in the table below.

14. Reconnect the battery, and if necessary reprogram the radio presets.





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