Cam nut removal

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Krashk
Cucciolo - the Lil Pup
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Cam nut removal

Post by Krashk » Mon Feb 01, 2016 11:09 am

Hi guys! I am restoring a 73 Ducati 750 GT. This is a total tear down, every nut and bolt, every bearing, every gasket resto.. I'm having trouble removing the nuts on the end of the cam shafts. I have at least one bearing that is suspect, but this these heads have been exposed for about thirty years and I want to make sure averything is in good condition. Any ideas. They are tight as hell and I can't hold the cams without damaging them.

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BevHevSteve
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Re: Cam nut removal

Post by BevHevSteve » Mon Feb 01, 2016 5:24 pm

you do know these are LEFT HAND threads, right?

(turn clockwise to loosen)
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Craig in France
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Re: Cam nut removal

Post by Craig in France » Tue Feb 02, 2016 1:37 am

And much the best thing is to use the correct tool to lock up:
a) either the entire engine
b) or just the camshaft.

The former you can do using a combined clutch locker like this:

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The latter using this tool that Steve sells - and I can do no better than repeat his advice :

"This is the safe and correct way to do this - don't risk damaging expensive bits trying to wedge in something..."

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Krashk
Cucciolo - the Lil Pup
Posts: 4
Joined: Sun Jan 31, 2016 4:50 pm

Re: Cam nut removal

Post by Krashk » Tue Feb 02, 2016 6:42 pm

Thanks to both of you. I wasn't sure if they were right or left handed threads. I tried both ways, but it was difficult to hold with the heads off. At least knowing which way to turn will help. Thanks again.

hedton
Mariana
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Re: Cam nut removal

Post by hedton » Wed Feb 03, 2016 3:55 am

Use an impact wrench or hold the bevelshaft in a vice.

Krashk
Cucciolo - the Lil Pup
Posts: 4
Joined: Sun Jan 31, 2016 4:50 pm

Re: Cam nut removal

Post by Krashk » Fri Feb 05, 2016 11:26 am

Thanks again for your help. Knowing that they are left handed threads help immensely. I actually removed them by putting the shaft in a lathe to hold it and they loosened right up.

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