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Crankcase washer...

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R100
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Crankcase washer...

Post by R100 » Thu Aug 13, 2015 2:48 pm

One 6mm nut (bottom of crankcase) is an oddball, and has an aluminium washer.
Can anyone tell me why that is?
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G-Man
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Re: Crankcase washer...

Post by G-Man » Thu Aug 13, 2015 3:11 pm

The stud it fits on goes through the oil gallery from the oil pump to clutch cover. The aluminum washer is to keep the oil in.....

Image


G
R100 wrote:One 6mm nut (bottom of crankcase) is an oddball, and has an aluminium washer.
Can anyone tell me why that is?
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

R100
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Joined: Sun Jul 01, 2012 3:02 pm

Post by R100 » Thu Aug 13, 2015 3:29 pm

Thanks G.
Some of the other bottom washers are rather beat up.
Is there anything special about them, or can they be replaced with any proper size steel washers?

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G-Man
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Post by G-Man » Fri Aug 14, 2015 3:07 pm

R100

Just regular steel for the other washers.

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

R100
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Posts: 332
Joined: Sun Jul 01, 2012 3:02 pm

Post by R100 » Fri Aug 14, 2015 3:10 pm

G-Man wrote:R100
Just regular steel for the other washers.
G
Thanks G.

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G-Man
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Post by G-Man » Fri Aug 14, 2015 3:51 pm

Zinc plated, of course.

Jerry recommends a dab of Hondabond under each one.

G
R100 wrote:
G-Man wrote:R100
Just regular steel for the other washers.
G
Thanks 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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