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Old 06-19-2016, 03:55 AM   #1
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Location: Blackfalds AB. CA
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vacuum pump location

Where is the vacuum pump on the National RV 2001 Marlin diesel motor home?
I have looked under the dash but cannot see it. Do not know if it is worn out or if it is just not getting power.
Cannot get any help from dealers around here. Help
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Old 06-19-2016, 01:30 PM   #2
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Hi Dave! Welcome to IRV2! We're sure glad you joined us!

Sorry I can't answer your question! Keep her between the ditches!

Good luck, happy trails, and God bless!
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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Old 06-21-2016, 12:08 AM   #3
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Awhile back another National owner couldn't find the vacuum pump. Another National owner posted a picture of the vacuum pump. Don't recall where is was, but don't think it was under the dash. I searched for the post but couldn't find it.
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.
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Old 06-22-2016, 12:04 PM   #4
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My 2000 Tradewinds has the pump mounted on the firewall outside just out of reach unless you are doublejointed.
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Old 06-22-2016, 12:15 PM   #5
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Because the pumps are noisy when operating they are most often on the outside of the firewall , along with the vacuum reservoir. Probably within a foot or so of each other.
I recall the post , chboone , mentioned and will see if I can track it down.

BTW: Welcome to iRV2.
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Old 06-30-2016, 10:32 PM   #6
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The vacuum pump on my Tropi-cal is mounted to the outer side of the firewall towards the drivers side.

Hope this helps.
2003 National RV Tropi-Cal 37'
CAT 330 & Allison 6-speed
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Old 06-30-2016, 10:51 PM   #7
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Mine was on an inside wall of the passenger side frame rail within a few feet of the engine in back. The vacuum pump on my Bounder was used for both the comfort controls on the dash, and supplied the vacuum for the cruise control system. Took me forever to find it. I knew it was bad because the book talked about the vacuum system and what it controlled. After removing it, it took quite a bit of time to find a generic replacement/
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