• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Valve adjusting snafu

  • Thread starter Thread starter schmitty78
  • Start date Start date
S

schmitty78

Guest
So, today I decided to give it a shot checking to see what valve shims are in my GS450TX. I was previously referred to the 'cable tie trick' in a write up on BassCliff's website. The trick worked like a charm! Unfortunately, I decided to try swapping both intake shims, to see if the 2.65 on the right valve, would put my left valve in tolerance. So, I took the right shim out and began turning the cam in order to get to the left shim. Before swapping the shims, I noticed that now the cam lobe is stuck in the valve shim 'seat', and if I turn any further, am risking doing damage to the cam lobe and shim 'seat'. I know I'm not the first to make this irritating mistake, so I'm wondering what is the solution to depressing the valve in order to get the shim back in??? Thanks to anyone for a tips out of this predicament!
 
Can you just place the last removed shim back in then rotate it backwards? If that will work, inspect the cam and bucket edges for scraping i.e. metal chips. Ray
 
Ghostgs1 said:
Can you just place the last removed shim back in then rotate it backwards? If that will work, inspect the cam and bucket edges for scraping i.e. metal chips. Ray
Click to expand...
Well, from what I can see, in order to get the cam lobe in position to put the shim back in, I would have to rotate it and thus it would scrape the bucket edges. Also, for some stupid reason, I removed the cable tie while the valve was open, so now the valve is closing all the way, as well. This has proven to be a pretty frustrating day...
 
If all else fails, ... remove the carbs, remove the cam chain tensioner, loosen the cams, lift them out of the way to re-insert your shims.

This will, of course, require re-timing the cams (it's good to verify that they are correct, anyway) and PROPERLY re-install the tensioner, but it will work. :o

.
 
Steve said:
If all else fails, ... remove the carbs, remove the cam chain tensioner, loosen the cams, lift them out of the way to re-insert your shims.

This will, of course, require re-timing the cams (it's good to verify that they are correct, anyway) and PROPERLY re-install the tensioner, but it will work. :o

.
Click to expand...
That's what I was afraid of. Trying to stay away from that, if it all possible...
 
Do as Steve says, he knows this stuff. It's really not that hard, not when compared to replacing all that crap because you screwed it up.
 
schmitty78 said:
That's what I was afraid of. Trying to stay away from that, if it all possible...
Click to expand...
How long do you think it will take to TRY to get everything unstuck without removing the cams?
AND to do it without any damage?

Removing and replacing the cams should easily be done within an hour for a first-timer.
When you have to do it again, it will likely take no more than half an hour. :D

Personally, I would remove the cams.
icon_shrug.gif


.
 
Steve said:
How long do you think it will take to TRY to get everything unstuck without removing the cams?
AND to do it without any damage?

Removing and replacing the cams should easily be done within an hour for a first-timer.
When you have to do it again, it will likely take no more than half an hour. :D

Personally, I would remove the cams.
icon_shrug.gif


.
Click to expand...
Well, I guess I have all day. And the service manual. Maybe I'll give it a go. Guess I'll start by reading up on setting the timing...
 
Steve and Tom are correct, if you have to turn it any further, you will be doing "in place machining". You won't like the results. Ray
 
Yup, Steve's on the money as usual, there's no other *safe* way to proceed...

As for the cam chain tensioner, timing, etc. it's all pretty straight forward and if you're not feeling confident there are plenty of us on here who've done it before and can give advice.

I probably have some suitable photos of my 450 getting cam timing done too if it helps.
 
You must log in or register to reply here.
Back
Top