The Good, the Bad the Webasto ....

Ray, I had a simular diesel leak with my Webasto. Your right with regards to finding out where it is leaking. For less than $70.00, I installed a new "fuel pump pressure pipe service kit" (only the long pressure pipe) Part #5000216A and a kit containing a new banjo bolts, gaskets and banjo tubes. Part #66548A. When you take this apart and compare the old vs. new, you'll understand why the old style tends to leak. It worked for me. I did install new fuel lines and hose clamps from the fuel filter to the unit (supply) and from the 3/8" to 1/4" connection for the return side. Mine still puts out white smoke on its initial start-up, but clears up at temperature. I also installed a marine bilge blower in this bay. Mine leaks alittle smoke @ the housing and smelled up the coach. This cleared up the smell. Call Eggimann Motors & Equipment @ (608) 271-5544. They are in Madison, WI.

Jon,

I am completely comfortable with removing the head of the unit with regards to disconnecting the control box., etc. Educate me a little with regards to disconnecting the electric/voltage input.

Thanks,

Ken

Jon,

I went to the link Hector posted and got all the info needed.

Regards,

Ken

Thanks for the replies everyone. Much appreciated.

Called all over the US today, trying to locate parts and someone with knowledge on these Webasco devices. Webasco tech support was helpful, but indicated I had to purchase parts through dealers. Of course, the list of dealers on the website generally were sunroof installers, and didn't handle the heater product lines.

Others indicated they could order parts, with a 3-week lead time.

Finally located a guy in Fontana (about 2 miles from Prevost Mira Loma), which is a specialist in RV heating systems. Says he has the parts in stock, and I'm heading over tomorrow AM!

When I first spoke with him, he indicated that the early fuel pumps were prone to leaking, and that's why they have built a newer replacement pub and kit.

Ray

Ray have you tried Jim's Alaskan friend? Sounds like he has bookoo knowledge on those.

Ray,

I remember multiple posts about the fuel pumps leaking, but I didn't think it applied to your vintage. Keep us posted...

Ray,
I've been out of touch for the last couple of days, so missed your post.

I had the same issue with mine leaking. After a couple of days of trouble shooting I just gave up and purchased a new fuel pump which solved my problem.

I also installed a fuel shutoff valve on the supply line to the Webasto so in case of future problems the fuel can be cutoff.

Attachment 2012

Attachment 2013

Attachment 2014

Attachment 2015

Pump was $177 from thermo king Roanoke,Va Ken parts
540 343-1528

Mike,

Thanks for the info. I'm really hopeful that it is the pump. I've made contact with a dealer semi-local, and plan on going there tomorrow to get parts.

Was this the unit on your H3 that was leaking, or on your Mothership?

Ray

PS: Where did you place the fuel-shutoff valvle? Inside the case for the Webasto, or external before the unit?

Thanks again,
Ray

Attachment 2016
To get access to the fuel pump, remove the head and then remove the four hex screws holding this plate to the housing.

Attachment 2017
The shaft of the pump penetrates the plate and is attached to a gear on the back side. Simply remove the clip on the shaft and remove the gear.

A couple of hex screws holds the pump to the plate.