Sorry, AJP Cam Chain Tension Again

[mattrosersv]

Sorry guys, need to dip into your knowledge again.

Having now read the manual...'tension the chain so that the tensioner arm can just be lifted from the pin with 12" screwdriver'.

I can, without much effort, move the tensioner arm about 3mm with my 9" screwdriver. This is with the tensioner bolt (24mm head) through the side of the block screwed right in against the case (there is a copper washer between head and block). This is where it was before I took it apart. Does this sound wrong?...

Is there any adjustment other than the bolt that screws into the block - I have assumed this is how to set the adjustment since the manual is not that clear?

If I do remove the bolt through the case in order to dispense with the copper washer to gain another small amount of adjustment (put back with sealant instead) do I need to be concerned with a) part of the tensioner assembly falling to bottom of the timing chain cover b) the tensioner pin falling out of the bolt to the bottom of timing chain cover.

I am guessing I am possibly into a replacement cam chain at some point soon (which will prob end up in an engine rebuild). Engine has done 68K by the way.

Any thoughts very welcome!!

Matt

[greenracing]

If you remove the big tensioner nut you will find that it is actually two pieces.The big nut has a hole drilled and a rod inserted into it, if you need to make the chain tighter, you need to make up a shim to sit at the base of the rod to push the rod further out.

[mattrosersv]

Thanks very much Greenracing! Off to the (cold) garage shorlty to sort out.

Matt

[greenracing]

I forgot to say that you can use the shank of a hex head engineering bolt ( cut to lenght), think its 6mm, as the shim.