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Engine removal?

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G-Man
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Post by G-Man » Fri Aug 30, 2013 9:24 am

Malcolm

Use a gas torch and some Plus Gas or WD40 as you heat / cool the stud. I try and tighten a little first and this often breaks the bond. Keep the head warm once the stud begins to move. Capiliary action will take the penetrating oil uphill.....

In order to remove the engine, I usually remove everything else then lay the frame / engine on its side and remove the frame from the engine rather than the other way around. The frame is easier to manoeuvre than the engine :-)

G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

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malcolmgb
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Post by malcolmgb » Fri Aug 30, 2013 4:49 pm

Thanks Graham, yes tightening first was something I tried, looks like the torch will have to get used.
I did try laying engine/frame on its side as I was working on my own, this was what prompted me to ask the initial question, it appeared I may have been able to just clear the stud if I got another person to help me with the frame lift.
1977 CB400F
1973 CL175
1976 XL175 - Sold
1964 CL72
1966 CA78

cbxmountainman
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Engine Removal.

Post by cbxmountainman » Thu Oct 24, 2013 3:43 pm

From my old memory, I never removed any studs. Just take the rear motor mount off and pick up the ass end and swing it out is what I've always did after taking the exhausts off natch.

P.Martinez
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Post by P.Martinez » Fri Oct 25, 2013 7:11 am

I removed the engine last month from my CL77 using G-Man's method and was able to remove it without removing the exh. studs (was not aware of that requirement at the time). Had everything off the frame with the exception of the engine of course. Laid the bike down on it's left side. Had a friend help me, and we were able to maneuver the frame off the engine after some trial & error. I can see how removing the exhaust studs would help, and definitely will have them off when reinstalling the engine. By the way, I have found that a mixture of 1/2 WD-40 & 1/2 acetone does a great job at loosening stubborn fasteners (spray WD in a suitable cup and then add acetone).
Phil M.

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