!999 Winnie Need help

Tcloud7 · 07-27-2007, 02:20 PM

We are on a lone trip and now we have a new noise. Its a Vacuum pump on the front of the Motorhome. It a Model WKG34V On a Freightliner Chassis.(Diesel) Well it ran on and off as it was doing something. Now its running all the time. Anyone know what it is and what its for?????????????

Thanks Don Tcloud

Tcloud7 · 07-27-2007, 02:20 PM

We are on a lone trip and now we have a new noise. Its a Vacuum pump on the front of the Motorhome. It a Model WKG34V On a Freightliner Chassis.(Diesel) Well it ran on and off as it was doing something. Now its running all the time. Anyone know what it is and what its for?????????????

Thanks Don Tcloud

Tcloud7 · 07-28-2007, 03:30 PM

OK: No help here.I unpluged it and will fine out when we get to Forest City.

Don
Tcloud

David K · 07-28-2007, 04:12 PM

Don't know for sure but, it may control your dash heater/air conditioning. I have been reading some of these forums and a lot of people have been seeing a split in the hose as it enters the vacuum pump. You might look at the tubing around the pump and the vaccuum tank. Just a thought. If the line is split or loose, the pump is trying to build up the vaccuum and it can not.

LHyzer · 07-28-2007, 05:11 PM

David K is probably right on. As it is usually a bad hose at the connecting point.They usually split as he said causing the problem. Simple fix if thats what the cause is.

Tcloud7 · 07-29-2007, 09:05 AM

Thanks. I just disconnected it. The lines look good to me.
Has anyone posted any Pics of this thing??
I would but I don't know how to post them.

Thanks

Chief · 07-30-2007, 05:11 AM

Tcloud7, no doubt that you have a problem with the auto vacuum system. Go to Wbago web site, cflick on Resources, click on Service Tips, under year 2005 click on Auto Heating & AC. Very good paper on how the system operates with diagrams etc. This site also has many other subjects that are covered very well.

DanS · 07-30-2007, 02:23 PM

Don....I have the same coach as you and I had the same problem a couple of years ago. It was a leak in the small vacuum hose under the lift up dash in the driver's compartment. As I recall, it was at some kind of straight connection. Just follow the hose from the dash as it weaves between the wires and brackets. You may find the same thing as I did. I repaired it and taped it. This stopped the pump from running constantly. Good luck.

DanS
99 Adventurer DP