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Topic: vacuum pump (Read 845 times) previous topic - next topic

vacuum pump

Air conditioning vacuum pump is toast...Does anyone have a source or a part number available for an 93 U225...Numbers are unreadable.  Believe I can use any type of pump, not just the one the factory sells for $400.00...thanks 
We are only strangers until we meet; however, some of us are stranger than others

Re: vacuum pump

Reply #2 –
I just had a conversation with a Sales Rep from the Watson Co in Marietta, GA about Gast Vacuum Pumps.  He tells me that the reason they are so expensive is because they have DC motors.  I have sent him a picture of my pump and he says he will determine what it is and get back to me with replacement costs.  In addition he says they are a repair facility BUT if the DC motor is shot it is only good for the scrap pile.
I'll have more later.
Gary B

Re: vacuum pump

Reply #3 –
Gary,

Think I would match up my dead pump with one on ebay before I shelled out $400. Vacuum is vacuum as long as the duty cycle is OK and the amps are close.

See at: vacuum pump 12v | eBay

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: vacuum pump

Reply #4 –
Gary,

The reason it is toast may be related to the Ford slide control for the heating/ac. My pump started cycling all the time and I spent a couple of hours trying to find the leak. Try moving the sliding lever over about a quarter inch from the stop. That's where my leak was. For some reason when the lever is at the end it triggers a vacuum leak. A piece of plastic or a tiny bit with a glue gun will block the lever before it hits the stop. Another member had the exact same problem. The vacuum pump should only operate occasionally.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: vacuum pump

Reply #5 –
Haven't used on a foretravel. But when I I had to have a small low cost 12 volt vacuum pump. I got one In the junk yard from under the back seat of an Audi. They use them for there door locks and cruse control. Gam
joseph gambaro
1999 U295 36'

Re: vacuum pump

Reply #6 –
Quote from: gam –
Haven't used on a foretravel. But when I I had to have a small low cost 12 volt vacuum pump. I got one In the junk yard from under the back seat of an Audi. They use them for there door locks and cruse control. Gam

Yep, Mercedes uses them in all their cars. Probably $20 at a junk yard. Bosch too.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: vacuum pump

Reply #7 –
And you can pick up bigger vacuum reserviors if you want it to run even less.
The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT

Re: vacuum pump

Reply #8 –
Quote
I just had a conversation with a Sales Rep from the Watson Co in Marietta, GA about Gast Vacuum Pumps.  He tells me that the reason they are so expensive is because they have DC motors.  I have sent him a picture of my pump and he says he will determine what it is and get back to me with replacement costs.  In addition he says they are a repair facility BUT if the DC motor is shot it is only good for the scrap pile.
I'll have more later.
Gary B

Here is the reply that I rec'd from the GAST Sales Rep FWIW.  That will give us an idea of the relative cost from other sources.


Gary,
 
This is a Gast pump, which is the company we rep for.  These pumps normally list for $308.  I can sell it to you for $246.40.  I would have to order it from the factory and the lead time is 1-2 weeks.
 
Luckily, this is the most readily available and least expensive DC pump they make.
 
Please let me know if you need anything else.
 
Thanks,

Re: vacuum pump

Reply #9 –
Summit Racing has a number of 12v vacuum pumps that they sell for big cam engines with low vacuum starting at $150 and up.
Randy
1994 U280 40'
 

Re: vacuum pump

Reply #10 –
My pump has been running constantly, not cycling.  Bill Chaplin pulled out his vacuum tester and showed me how to check all the hoses and system.  We found the low vacuum pressure, just about enough to keep the AC system working.  He was so kind to pull off the old pump, and today I ran to Dallas for either a re-build or new pump.

I ended up with a new Gast vacuum pump today for $283.70, $307.11 out the door tax paid.  The pump model numbers were unreadable but the supplier knew what I needed.  Just readable under the over spray was the original build date of 4/92.  Figured a new pump to replace one that lasted 20 years was a good investment for my classic.

Part # Gast MOA-V111-JH VAC pump.
The pump is 1/16 hp, draws 6.5 amps, runs 1800 rpm, .56 CFM.  Mounting holes may have changed, as the old mounting shock mount bolts holes and rubber mounts were 8/32, and the new mounting bolt holes are 10/32.  Grainger's does not list 10/32, so I have upgraded to 1/4-20.  I re-drilled and re-tap, the 3 mounting holes and used washers and nuts.

The new pump is in, works, and is 1/10 the noise of the old pump.  It now cycles on and off as needed.

Detail sheet page link:  http://swcontrols.com/products/swcpages/037SWC.pdf
Dave Cobb
Buckhorn Lake Resort The Club, #6202, Kerrville TX
check the map.  I do rent it out when I am traveling!
2001, U320, 36' #5887, in Kerrville, FT Club #17006, (7/23 to present)
2024 Jeep Grand Cherokee L, Summit, white
EX: 98 U295, 36' #5219, (mid door), (4/13-10/23)
EX: 93 U225, 36' (4/11 to 4/13)