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Timing Chain Tensioner Installation

12K views 9 replies 7 participants last post by  trickydoc 
#1 ·
Looking for technical advice on timing chain tensioner installation.

I have a 1997 TJ with 2.4 liter, 4 Cylinder engine. I am replacing the timing chain tensioner. I installed the new tensioner and unlocked the spring retention lever, which of course, caused the block to move toward the chain, taking up the slack.

My question is, now that the tensioner has taken up the chain slack, do I now relock the lever, or do I leave the lever unlocked, allowing freedom of movement of the tensioner block?

Thank you in advance.
 
#6 ·
Per Service Manual, leave it unlocked

INSTALLATION

Turn the tensioner lever to the unlocked (down) position Loading Timing Chain Tensioner
Pull the tensioner block toward the tensioner lever to compress the spring. Hold the block and turn the tensioner lever to the lock position Loading Timing Chain Tensioner
Apply Mopar Silicone Rubber Adhesive Sealant to the keyway in the crankshaft and insert the key. With the key in the crankshaft keyway, install the crankshaft, camshaft sprockets and timing chain. Ensure the timing marks on the sprockets are properly aligned Crankshaft - Camshaft Alignment
Install the camshaft sprocket retaining bolt and washer. Tighten the bolt to 108 N·m (80 ft. lbs.) torque.
Turn the chain tensioner lever to the unlocked (down) position Loading Timing Chain Tensioner
Install the oil slinger.
Replace the oil seal in the timing case cover.
Install the timing case cover and gasket.
With the key inserted in the keyway in the crankshaft, install the vibration damper, washer and bolt. Lubricate and tighten the bolt to 108 N·m (80 ft. lbs.) torque.
Install the fan and shroud.
Connect negative cable to battery.
 
#10 ·
are you replacing the chain and gears or just the tensioner? Just make sure to get the timing marks lined up before removing any of the old components. get everything lined up and it will go back on right. don't forget to replace the oil slinger. I have replaced chains and gear sets on several 2.5's and 4.0's and about half had the slinger missing. guess they either got left out at the factory or the last guy that replaced taming gears left them out.
 
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