Posted by Hay_Man on March 11, 2013 at 09:39:56 from (76.1.79.199):
In Reply to: 4.0 update posted by rrlund on March 11, 2013 at 07:21:49:
Look at this TSB. Says only 6 hrs to replace all these parts! Better hurry!
Ha Ha Ha!
*Engine - 4.0L SOHC - Rattle noise from primary chain drive area between 2K-3K RPM - Cold engine operation only
*Noise - Rattle noise from primary timing chain drive area between 2K-3K RPM - Cold engine operation only - vehicles equipped with 4.0L SOHC Engine only
Ford: 99-02 Explorer, 01-02 Sport Trac, Explorer Sport, Ranger
Mercury: 99-02 Mountaineer
Issue:
Some vehicles equipped with the 4.0 SOHC (Single Over-Head Cam) engine may exhibit a Primary Timing Chain rattle noise. The noise is audible during hot and cold engine operation (but predominantly found on cold engines) under acceleration, typically at 2400-2500 rpm. To confirm presence of this noise, accelerate in 2nd gear between 2000-3000 rpm and listen for rattle noise that sounds similar to spark knock. This may be caused by the Primary Timing Chain Tensioner system.
Action:
Replace the Primary Timing Chain Tensioner, Chain Guide, Jackshaft, and Crankshaft Sprockets with a Primary Timing Chain Tensioner Kit. The kit includes an improved Primary Chain Tensioner, as well as updated Primary Chain Guide, Jackshaft, and Crankshaft Sprockets. Required fastners, primary timing chain, and front cover gaskets are also included. Refer to the following Service Procedure for details.
Service Procedure:
Verify the condition. Obtain the correct kit and follow the sheet supplied with the kit.
Use kit 2U3Z-6D256-AA (balance shaft engines) for:
-99-01 4x4 Explorer/Mountaineer
-01-02 4x4 Sport/Sport Trac
-All 02 Explorer/Mountaineer, except engine codes 2G-960-AA and 2G-964-AA
Use kit 2U3Z-6D256-BA (non blance shaft engines) for:
-99-01 4x2 Explorer/Mountaineer
-01-02 4x2 Sport/Sport Trac
-02 Explorer/Mountaineer with engine codes 2G-960-AA and 2G-964-AA
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