Hydraulic Cam Chain Tensioner - too big? - Triumph675.Net Forums
Maintenance and repair Problems, fixes, general maintenance talk

 
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post #1 of 7 Old 01-01-17, 20:30 Thread Starter
Megan_J
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Hydraulic Cam Chain Tensioner - too big?

Son of a tight tolerance...

I ran into an umm "interesting" problem while removing my CCT (12K service): the stock hydraulic tensioner did not want to come out of the engine housing no matter the orientation. Luckily a teeny, tiny amount of persuasion with a long screw driver and a hammer got it out, but there's no way the SOB is ever going back in.

Oh and no making fun of my blue tape placement. ;)

Luckily I had a manual CCT on hand - wasn't really planning to replace it but there doesn't seem to be any other choice. I knew my bike was special, I was just hoping that it wasn't this type of special.

Any suggestions? The manual CCT is installed, and everything sounds/runs great after the valve adjustment. More importantly nothing blew up, so I'm gonna call this one good.
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post #2 of 7 Old 01-01-17, 21:36
MGFChapin
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That's not normal. You loosened both bolts on the CCT evenly so it wasn't tweaked coming out? Once they're loose, it should fall right out without any tools. You're saying it was stuck in the engine or it was hitting the frame on the way out?

Regardless, any track riding at all warrants a manual CCT. You're better off with it.

Is that the Triumph one? It came with a whole new blade too?
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post #3 of 7 Old 01-01-17, 22:29 Thread Starter
Megan_J
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Yeah, I thought that was wrong too...especially for a part that is supposed to be removed, reset, and refit on the regular. It came out of the engine no problem, then got stuck on the frame.

And yup, I pulled the CCT straight out with no problem, and the I'll be darned if the last 1 - 1.5 mm of the CCT body was too wide to angle it out without the flange hitting the frame. I tried it in every configuration possible, and no dice. It left a little ding in the frame and a matching one on the CCT flange edge. Originally I thought it was because it was extended, but nope, it was the stock CCT body. It's the same length as the manual one, just a few mm wider at the very end compared to the kit part. That pretty much prevents it from the easy remove/refit of the manual one.

So yeah, the Triumph one comes with the blade...guess it was lucky that I had to do some valve adjustments, so with the cam ladder off, it was really easy to get the old blade out. The new one is solid plastic, and a fair bit heftier, maybe it's a fail-safe in case of overtightening? (I didn't overtighten - I promise!) That way there's no metal to potentially cut through the cam chain?

Does this mean I win a forum prize for the weirdest CCT fit?
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post #4 of 7 Old 01-02-17, 01:14
MacBandit
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Could be a new part. Will be interesting to see if anyone else encounters this. What's the production date on your bike?
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post #5 of 7 Old 01-02-17, 20:46 Thread Starter
Megan_J
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The bike was produced in Jan-2013, and the CCT hasn't been replaced...until now.

Hopefully no one else runs into the same issue, but if they do, I'd love to hear how they resolve it. Seems like it's 12K service time for a lot of us.
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post #6 of 7 Old 01-02-17, 22:26
MGFChapin
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Weird, my 2015's CCT fell right out. I had the airbox, TB's and cam cover off too but as I recall it pulled out and to the right, so I should have been able to do it with everything still assembled.
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post #7 of 7 Old 04-08-18, 13:24
whirlybird
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Figured it out

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2015 Triumph D675

Last edited by whirlybird; 04-08-18 at 13:30.
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