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Cam chain tensioner ?

  • Thread starter Thread starter CB900SS
  • Start date Start date
C

CB900SS

Guest
I was reading my FSM and came to the part about the cam chain tensioner... Well it concerned me because I removed my tensioner to replace the gasket and just bolted it back in place. I figured the adjustments were set and I shouldn't mess with them, feeling the tension between the cams showed the chain was plenty tight.

Should I re-set the tensioner? Thanks.
 
There should be a procedure in the manual for re-setting it.
 
If you pull the tensioner out of the engine without setting the locknut, the plunger will spring out to full stroke (assuming your tensioner is functioning properly that is). When reinstalling the tensioner it will be overly extended and the cam chain will be too tight. I suggest you pull the tensioner back out and push the plunger in and set the locknut. After you install the tensioner you can release the locknut and the plunger will spring out to the proper tension.
 
I will have to look in the fsm further tomorrow, I saw the procedure for taking it apart and checking it for proper function. But not for its setting.

Thanks.
 
Loosen the lock nut and tighten the lock screw on the side. Pull the tensioner. Loosen the lock screw and push in the piston and turn the knurly knob at the same time till it takes it in the whole way in. Tighten the lock screw now. Install the tensioner and unscrew the lock screw about a 1/4 turn and you'll hear a POP. Tighten the lock nut while holding the screw to keep it a 1/4 turn out so the spring will keep tension on the piston and the chain.
 
Take the stock tensioner & throw it in the trash. Then call APE & order a manual tensioner & you will never look back! Ray.
 
rapidray said:
Take the stock tensioner & throw it in the trash. Then call APE & order a manual tensioner & you will never look back! Ray.
Click to expand...

Damn I want one, but they don't make them for the 1000 only the 1100 (as is true of most of their stuff). I understand it, it's a much more popular bike to build out, but still sucks.
 
CB900SS said:
I will have to look in the fsm further tomorrow, I saw the procedure for taking it apart and checking it for proper function. But not for its setting.

Thanks.
Click to expand...

Take it out, take it apart and check it, clean it off, reoil and reinstall. It is over 25 years old and could use some TLC.

Many here don't like the stock tensioner, but more still have it functioning perfectly.
 
I guess the first thing I need to do is order another gasket for it. :oops:

Unfortunately my financial situation right now won't allow me to buy a manual tensioner, but thanks for the suggestions. The bike only has 8,xxx miles on it... But I guess its more about the age of it. I am sure servicing the stock tensioner would be a good idea, I just wish I would have thought about it when I had it out for the new gasket. :cry:
 
chef1366 said:
Loosen the lock nut and tighten the lock screw on the side. Pull the tensioner. Loosen the lock screw and push in the piston and turn the knurly knob at the same time till it takes it in the whole way in. Tighten the lock screw now. Install the tensioner and unscrew the lock screw about a 1/4 turn and you'll hear a POP. Tighten the lock nut while holding the screw to keep it a 1/4 turn out so the spring will keep tension on the piston and the chain.
Click to expand...

After reading this I am even more concerned with what I have done. :mad:

Thanks, I see how to set it now.
 
I can't remember if I used gaskacinch or not... I guess it all depends on how the gasket looks when I take it apart. Thanks again for the replies!
 
Just to finish this thread off.

I pulled the tensioner and luckily the gasket stayed in one piece and with the motor. After feeling the action of the tension I decided to just set the plunger fully in by turning the knob and setting the lock screw. I then re-installed the tensioner and released the lock screw about a 1/2 turn, and heard the plunger pop in... Then I tightened the lock nut, leaving the screw a 1/2 turn loose. No oil leaks and I don't hear the cam chain slapping around, so I feel all is good.

Thanks for all the help!
 
doctorgonzo said:
Damn I want one, but they don't make them for the 1000 only the 1100 (as is true of most of their stuff). I understand it, it's a much more popular bike to build out, but still sucks.
Click to expand...
The APE manual tensioner for the 1100 will also work for the GS1000. Dar
 
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