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Joined: Oct 2003
Posts: 96
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Oct 2003
Posts: 96 |
The vacuum shift on my 1939 MDSS has always been a bit "dozy" It definitely assists shifting (in fact it is very difficult to shift with it disconnected) but shifting with two fingers as the young lady in the factory photos is apparently doing is not an option. I keep it lubed and adjusted as per the manual and have a new hose but nothing I do improves it. Am I missing something or did the factory advertising use a bit of poetic license?
ColinGrant
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Joined: Dec 2001
Posts: 2,037 Likes: 5
ChatMaster - 2,000
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ChatMaster - 2,000
Joined: Dec 2001
Posts: 2,037 Likes: 5 |
My 1940 coupe with vacuum assist does shift quite nicely with just my index finger. When set up properly, they work great.
dtm
the toolman
60th Anniversary Meet Chairperson
Dave
VCCA # L 28873
VCCA #83 Tool Technical Advisor for 1914-1966
VCCA #83 1940 Chevrolet Technical Advisor
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
Lubing the vcauum cylinder with hyd. javk oil and lubricating all linkages may help.
If you didn't follow the shop manual for lubing the cylinder.
Gene Schneider
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Joined: Oct 2003
Posts: 96
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Oct 2003
Posts: 96 |
I lubed it with hydraulic (jack) oil and made up an adjusting sleeve to set the valve correctly. I'm beginning to think it's a 1939 problem as 40 on used side selectors. Right hand drive might have something to do with it too.
ColinGrant
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