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Joined: Jul 2004
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Shade Tree Mechanic
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OP
Shade Tree Mechanic
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I was looking for a part number for a 1933 Master Rear Axle Seal? Also is there anyone that rebuilds the Vacuum Advance units for a 33 Master or are they available from a parts supplier?
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Joined: Jan 2002
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ChatMaster - 25,000
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ChatMaster - 25,000
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The 1933 Master rear axle seals also fit 1/2 ton trucks from 1933-1959. Any parts house could order them for you. Also available from ....www.fillingstation.com......and they have a vac. advance rebuilding service also (and an on-line catalog).
Gene Schneider
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Joined: Jan 2003
Posts: 410
Backyard Mechanic
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Backyard Mechanic
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Posts: 410 |
How mutch vaccum does it take to opperate a distributor vaccum (measure) I bought one nos( sealed in the org box) from Bruce in Virigina and it works some. It moves about 1/4 inch when you rev the engine. Being 70 + years old it may be stiff. May be I should have that one rebuilt! Thanks.
easymoney
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Joined: Jan 2002
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ChatMaster - 25,000
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ChatMaster - 25,000
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The older shop manuals don't give a figure for the advance operation. The 1949 is the first. Here is what it says.
Advance begins with 7" of vacuum.At 20" its fully advanced - which is 18 to 22 degress advanced for that engine.
Each advance has a slightly different amount of "advancement' ...depending on engine requirements.
If the advance you have holds vacuum it should work OK but as you mentioned the diaphragm may be a little stiff.
Gene Schneider
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Joined: Nov 2001
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Tech Advisor ChatMaster - 25,000
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Tech Advisor ChatMaster - 25,000
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Actually, there are specifications for the older vacuum advances, and your diaphragm is not stiff because your vacuum advance is working exactly like it should.  Here are the specifications for the vacuum advance for your application: Inches of HG. to start movement of plunger = 4 Minutes. Inches of HG for full plunger travel = 12.5 Total plunger travel = 1/4" Nominal maximum advance, engine degrees = 12  :) :grin:
The Mangy Old Mutt
"If It's Not Junk.....It's Not Treasure!"
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Joined: Dec 2001
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Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
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I think he ment inches.  
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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Joined: Nov 2001
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Tech Advisor ChatMaster - 25,000
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Tech Advisor ChatMaster - 25,000
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Nope. I meant "minimum" but I typed "minutes" instead. :o :cry:
The Mangy Old Mutt
"If It's Not Junk.....It's Not Treasure!"
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Joined: Feb 2007
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ChatMaster - 750
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ChatMaster - 750
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"To err is human, but why must you be so human?"
hoppy
"Four-Doors-Forever"
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Joined: Jan 2002
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ChatMaster - 25,000
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ChatMaster - 25,000
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How can a dog be human? :)
Gene Schneider
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Joined: Nov 2001
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Tech Advisor ChatMaster - 25,000
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Tech Advisor ChatMaster - 25,000
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Bow Wow! :) :grin:
The Mangy Old Mutt
"If It's Not Junk.....It's Not Treasure!"
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Joined: Nov 2001
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ChatMaster - 15,000
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ChatMaster - 15,000
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Gene,
He is neither human nor dog just a combubalution of both.
How Sweet the roar of a Chevy four!
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Joined: Jul 2004
Posts: 67
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jul 2004
Posts: 67 |
Thanks for the leads. I just called the filling station and they only rebuild 1934 and later Vacuum advance units. Do you have any idea what the difference is.
Thanks
John
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Joined: Dec 2001
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Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
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If you take a look in the "parts for sale" in your G&D, find an ad by Bill Denman, contact him and see if he is still doing the vacuum advances.
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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