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Author Topic: Installing Camshaft Timing Sprocket  (Read 671 times)

Crossrodes

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Installing Camshaft Timing Sprocket
« on: July 12, 2010, 06:42:36 PM »
The Clymers manual says to tap the sprocket back on after oiling the end of the camshaft and sprocket and by supporting the other end of the cam with a heavy hammer so as not to damage the housing.

I left the woodruff key in place to use if for alignment ( I have done this type of installation many times) but I have been working on it for a couple of hours now and have not got the sprocket seated yet.  Is there any special secret (like heating the sprocket) that others have used to get the sprocket installed?
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Offline nhmaf

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Re: Installing Camshaft Timing Sprocket
« Reply #1 on: July 12, 2010, 10:10:58 PM »
I think that Monte may have had to replace his sprocket on one of his bikes - he may chime in soon.   I don't know if I'd leave the woodruff key on there while trying to do it, but I admit I've very little experience on replacing this sprocket.   I'll have to check some of my other books but I don't see why it would hurt to put the sprocket in a warm oven (~250F) first - 'cept that you'd better be careful handling it while fixing it onto the shaft or burn your fingers.
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Offline montmil

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Re: Installing Camshaft Timing Sprocket
« Reply #2 on: July 13, 2010, 07:24:34 AM »
Sorry, guys, but I've not yet yanked a timing chain sprocket. I do recall my research turned up suggestions regarding heating the gear prior to a leather-gloved refit. Kitchen oven or propane torch seemed to be the consensus.

Monte
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Monte Miller
Denton, TEXAS
1978 BMW R100S
1981 BMW R65
1983 BMW R65
1995 Triumph Trophy
1986 VW Cabriolet

Crossrodes

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Re: Installing Camshaft Timing Sprocket
« Reply #3 on: July 13, 2010, 06:39:53 PM »
Well I've had no time today to play with the bike so hopefully tomorrow, while wifey is working, I'll heat up the oven.  I'll let you know how it works.
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Offline montmil

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Re: Installing Camshaft Timing Sprocket
« Reply #4 on: July 14, 2010, 07:34:36 AM »
Quote
...while wifey is working, I'll heat up the oven. I'll let you know how it works.

Oh, man, you're brave! Go buy a strong scented candle to burn while you're messing with your sweeties oven. Any oil on that gear and I'm thinking you're the one's maybe gonna get burned.
 
[smiley=behead.gif] This was me after I used the oven to help disassemble an old car master cylinder.

Monte
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Monte Miller
Denton, TEXAS
1978 BMW R100S
1981 BMW R65
1983 BMW R65
1995 Triumph Trophy
1986 VW Cabriolet

Crossrodes

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Re: Installing Camshaft Timing Sprocket
« Reply #5 on: July 14, 2010, 03:03:43 PM »
OK it worked.  I tried various temps and found that 25 minutes in a 325 degree oven worked.

Now I think I'll go out and buy some flowers... There's a burnt oil odour in the house.  All windows are open and the exhaust fan is on.  :o
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