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sterling6390
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VBMWMO #6390
Joined: 10/27/2006
Posts: 3

I'm replacing weeping pushrod seals and having difficulty breaking the cylinder off the block. a few whacks with a rubber mallet and it's "free" but won't come budge more than a mm off the block. engine runs well. Thanks.

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1959 R60; 1961 R50/2; 1970 R75/5

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6670
Assuming that all the head

Assuming that all the head bolts are off, it's probably binding with the pushrod tub seals. I'd wiggle the cylinder up/down a bit while you pull out.

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

mark_weiss
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Arizona
Joined: 11/16/2013
Posts: 173
Yes, the pushrod tube seals

Yes, the pushrod tube seals often bind agains a frame rail and the cylinder seems to be stuck. This is usually more of a problem on the right side due to the clutch cable's routing and the proximity of the frame and seals. Twisting the seals loose usually does the trick.

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Mark
qualitycycleservice.com

sterling6390
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VBMWMO #6390
Joined: 10/27/2006
Posts: 3
just rusted in place

It took at least 50 gentle whacks on all four sides to break it free. didn't have any problems with the seals hitting the frames once it was free, but it took quite some time to get it all the way off.

Turns out there was some rust from sitting in non-climate-controlled storage for several months. Chrome pitting on the handlebars should have given it away.

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1959 R60; 1961 R50/2; 1970 R75/5

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