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FREE MANUAL CAM CHAIN TENSIONER!

See the bottom of the MCCT page for details - click here to go to the MCCT page

 

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ACCT Replacement Springs and Rebuild Kit

Manual Cam Chain Tensioner

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Printer Friendly Word Doc Click Here
Special thanks to:
Richard Brownstein for developing this word doc
Darrel Cummings for making suggestions to make the instructions easier to follow

Click here for a video showing how to rebuild the ACCT with the TOC Ultimate ACCT Rebuild Kit.

Rebuilding the Automatic Cam Chain Tensioner is fairly straightforward.

After removing the ACCT from the bike, remove the cir-clip that secures the plunger to the body.  A pick or dental tool works well for this.  After removing the parts from the body of the ACCT and laying them out in order, they should look something like this:

At this point, remove the old spring and replace it with the new spring.  The ends of the spring will fit into the slot in the threaded rod and the groove on the inside of the ACCT body. Replace the re-assembled components into the body of the ACCT as shown below, ensuring you align the bend in the spring with the notch in the ACCT body:

Now comes the difficult part! The spring should be preloaded (We recommend 1 full turn of pre-load) before the plunger assembly is screwed in.  This is where the manual dexterity is needed.

To preload the spring, insert the TOC Manufacturing Ultimate Rebuild Tool into the back of the ACCT. Turn the screw 1 turn clockwise, then lock the Tool by inserting the shoulder of the Tool into the body of the ACCT.

At this point you need to screw the threaded rod into the plunger, without losing the preload on the spring.  To do so, properly orient the three tabs of the plunger to the body of the ACCT, then, back out the Key so the shoulder is disengaged, and continue to turn the key, retracting the plunger into the ACCT body.

 Three (3) things to keep in mind:

 1) Be sure and check the orientation of the tabs on the plunger before you start to screw the threaded rod into it.  The 3 tabs are not the same size and there is only one correct orientation.

 2) Have the spring clip resting on the plunger below the rounded end and above the retaining tabs.  This will make it much easier to secure the spring clip in its groove once the retaining tabs are seated.

Once the plunger is threaded and fully retracted, continue to turn the Rebuild Tool clockwise - this will give you the flexibility to align the three retaining tabs with their respective notches in the body of the ACCT.  Once these tabs are in their notches, reinsert the spring clip into its groove.

3) Once the ACCT is fully assembled and the spring is allowed to decompress, the plunger should reach full extension with the rounded end approximately one inch beyond the retaining clip.  You should not be able to push the plunger back into the body of the ACCT if the rebuild is done properly.

That's all there is to it!  To re-install on the bike, the plunger must be compressed. To do this, use the Rebuild Tool to wind up (retract) the plunger lock it into place while  re-installing it on the bike.

 

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Copyright 2006 TOC Manufacturing
Last modified: 01/04/09

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