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BMW e46 320d Timing Chain Tensioner

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BMW e46 320d Timing Chain Tensioner

Postby old_rob » Fri, 13 Aug 2010 19:01:54 UTC

I have had to recently rebuild my engine after a swirl flap problem. I am struggling to work out how to fit the timing chain tensioner spring. Do I need to take the timing chain cover off?

Can anyone help?
old_rob
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Postby poppy sammy » Fri, 13 Aug 2010 22:23:46 UTC

from memory you should have locked the timing chain tensioner in place using a dowel i used iirc a 5mm allen key.If you look on the timing chain cover
there is a grub screw(allen key) that you can remove which allows you access to the timing chain
tensioner.I'd suugest you buy a tis disk from ebay.Good luck
poppy sammy
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Postby old_rob » Sat, 14 Aug 2010 10:22:57 UTC

Thanks. You are right, but unfortunatly I didn't lock the tensioner. The only way I can see to get the tensioner spring and piston back in is to either remove the head again, or the timing chain cover. I think it will be easier to remove the head (New gasket and bolts again). Removing the timing chain cover seems a bit involved.
old_rob
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Posts: 4
Joined: Tue, 03 Aug 2010 11:32:15 UTC
Location: Warwickshire

Postby poppy sammy » Sat, 14 Aug 2010 11:56:04 UTC

first try applying some pressure as you need to compress the spring tensioner,according to tis its possible to refit the tensioner this way.It might be worth using a small flat head screwdriver or a similar tool first to locate the guide rail in the correct position before refitting the tensioner.Good luck
poppy sammy
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Joined: Wed, 30 Apr 2008 22:31:09 UTC

Postby old_rob » Sat, 14 Aug 2010 15:18:31 UTC

Thanks. Tried that way, but failed. I couldnt reach in and get enough pressure on the spring. Have removed Head again and locked tensioner with locking pin. New Head gasket and bolts available on Monday.
The only outstanding problem I have is refitting the sump. It was a bugger to get off. I think I will have to completley undo the cross member to give enough room. Have already unbolted engine mountings and jacked engine up.
old_rob
Newbie

Posts: 4
Joined: Tue, 03 Aug 2010 11:32:15 UTC
Location: Warwickshire

Postby old_rob » Mon, 23 Aug 2010 12:03:16 UTC

All back together again. Although the low pressure pump is delivering plenty of fuel to the high pressure pump, the high pressure pump does not seem to be pressurising the common rail. I have bled system, but still very low pressure. Engine will only run for a few seconds using easy start. Any suggestions anyone?
old_rob
Newbie

Posts: 4
Joined: Tue, 03 Aug 2010 11:32:15 UTC
Location: Warwickshire


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