Author Topic: Broken cam chain tensioner teeth  (Read 209 times)

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Offline wmajinw

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Broken cam chain tensioner teeth
« on: December 06, 2024, 07:30:02 AM »
So I'm putting back together my top end and had very hard time putting on the cam chain on the sprocket. I tried adjusting the aoring loaded tensioner to be slack but it ended uo seizing and not moving at all. After dissasembling everything I saw that one tooth of the tensuoner was broker (see photo) and thr pin "jumped" thourg the remaining teet and would not function.

Any advice on how to solve this? Didn't see any used tensioners and new ones are quite costly.

Offline bryanj

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Re: Broken cam chain tensioner teeth
« Reply #1 on: December 06, 2024, 07:41:06 AM »
Would help to know what the bike is
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline wmajinw

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Re: Broken cam chain tensioner teeth
« Reply #2 on: December 06, 2024, 08:07:05 AM »
CB550

Offline Little_Phil

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Re: Broken cam chain tensioner teeth
« Reply #3 on: December 06, 2024, 08:22:52 AM »
You need a another tensioner. When rebuiding do not use the slotted screw to try to adjust. Push the tensioner back by using a tool in the chain tunnel and locking off the tensioner with the lock nut on the slotted screw. Never turn the tensioner slotted screw. It is there only to hold it still when you lock the nut down.
https://www.ebay.com/itm/116407260762
or put a listing in the wanted section here.
« Last Edit: December 06, 2024, 08:29:15 AM by Little_Phil »

Offline bryanj

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Re: Broken cam chain tensioner teeth
« Reply #4 on: December 06, 2024, 08:36:02 AM »
Dave Silver sells complete pattern ones but not cheap, used ones ones are a crap shoot and as stated DO NOT used the slotted screw as adjuster
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!