Foretravel Owners' Forum

Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: jeff on August 19, 2010, 11:13:46 am

Title: vacuum pump
Post by: jeff on August 19, 2010, 11:13:46 am
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 
Title: Re: vacuum pump
Post by: Jim Frerichs on August 19, 2010, 11:21:18 am
Hi Jeff,
 
This was posted recently. Hope it help you.
http://www.evanstempcon.com/serviceparts.php
 
Jim
2002 U320
Title: Re: vacuum pump
Post by: Gary Bouland (RIP) on July 18, 2012, 03:49:27 pm
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
Title: Re: vacuum pump
Post by: Pierce & Gaylie Stewart on July 18, 2012, 05:48:51 pm
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 (http://www.ebay.com/sch/i.html?_trksid=p5197.m570.l1313&_nkw=vacuum+pump+12v&_sacat=0)

Pierce
Title: Re: vacuum pump
Post by: Pierce & Gaylie Stewart on July 18, 2012, 05:56:33 pm
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
Title: Re: vacuum pump
Post by: gam on July 18, 2012, 05:59:56 pm
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
Title: Re: vacuum pump
Post by: Pierce & Gaylie Stewart on July 18, 2012, 06:04:53 pm
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
Title: Re: vacuum pump
Post by: Dave Head on July 18, 2012, 06:36:39 pm
And you can pick up bigger vacuum reserviors if you want it to run even less.
Title: Re: vacuum pump
Post by: Gary Bouland (RIP) on July 23, 2012, 12:46:25 pm
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,
Title: Re: vacuum pump
Post by: randy s on July 23, 2012, 03:34:34 pm
Summit Racing has a number of 12v vacuum pumps that they sell for big cam engines with low vacuum starting at $150 and up.
Title: Re: vacuum pump
Post by: Dave Cobb on July 23, 2012, 08:27:19 pm
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 (http://swcontrols.com/products/swcpages/037SWC.pdf)