Webasto heater install continued:
With the rustproofing dry check how the heater's rubber gasket will lay.

Slide the gasket onto the heater. There is a lip on the side of the gasket that goes against the heater. The bottom side is flat.

Install the heater onto the van step and secure with lock washers and nuts.

The wire is for the fuel pump.

Next up is the fuel pump installation.
This was a used heater and came with no manuals but you can get download them from the
techwebasto.com web site.
I have my fuel pump laying on a manual page that shows the direction of fuel flow. The outlet side of the pump is the same side that has the electrical connection (right side in this picture).

The manual page identifies that plastic piece on the right end as a "damper".
While laying under the van try to find the best place to position the pump.

There is a plastic clip that extends through the van floor. Instead of drilling a new hole for the pump mount I'll remove the clip and use it's hole.

I'll need to fabricate a mount for the fuel pump. I'm using this piece of 3/16" x 1" Flat Bar Steel Alloy (ASTM A36).

It comes from a load of steel stock I bought to practice welding on.

Put a couple of bends in the bar. Clamp it into my vise and use a large wrench to bend it.

This gives me a place to mount the pump.

Add another bend to complete.

Using the plastic clip as a guide to where the bolt hole for the mount should be drilled.


The fuel pump is a "pulse" type. It "clicks" as it pumps. I want to isolate the pump so that the clicking isn't transmitted to the van body. I'm going to do this two different ways.
Use rubber washers between the van body and the pump mount.

Use an old inner tube between the pump and the pump mount.

Here is the first version.
Warning: It will be changed.

I wanted to keep the pump close to the heater while using the already-in-place clip hole. This dictated the length of the mount. After a test fit I didn't like the "leverage" of the mount at the pump end so shorted it.

Next version. Use screw clamp to secure the rubber wrapped fuel pump to the mount.

Add some silicone to seal the hole in the van step and bolt the pump mount into place.
The rubber washers are between the large washer and the van body on both sides of the hole

The electrical wire to the pump is longer than needed so I've used a cable tie to to curl up the excesses and keep it from dangling down.

continued :