Needed Webast0 .40 Atomizer Nozzle

[Nick Badame Refrig/ACC]

Hi Bryan,

It wouldn't be the first time Webasto Tech guy's scared you into using their parts Only!!

Think about it Bryan, you have a .40 GPM nozzle.. Do you really think you need a larger fuel pump to

spray through a smaller .35 GPM nozzle?

No, I don't stock a .40 nozzle. I would have to order 12 at a time to supply you with 1. No can do! Sorry..

Good Luck
Nick-

[luvrbus]

Bryan, Dick Wright should have it Wrico 541-744-4333 or Sure Marine 1-800-562-7797 try Dick first

good luck

[bryanhes]

Nick,

I am just trying to figure this out. When I looked up the parts in the parts book they actually showed a 7 to 10 Bar conversion kit Part # 906073B. I saw this before I called them. This is what the part line reads: 7 bar (102 psi) to 10 bar (145 psi). Here is a link as well; http://www.techwebasto.com/heater_main/5000943B.pdf

I am not even sure if everything will work ok. I am going to try to bench test it tomorrow evening. I understand what you are saying as far as why would I need a larger pump to atomize fuel through a smaller nozzle, I don't know the answer but there has to be some logic I would think. Have you put a .35 nozzle in a 7 or 8 Bar pump. From everything I could find all that have the .35 have the 10 Bar (145 psi) pump. I am not saying you do not know what you are talking about, just looking for a better explanation.

I copied this from the service manual. If this is correct shouldn't I be able to adjust the pressure to 145 psi to work with a .35 nozzle

6.2.5    FUEL PUMP CHECK
A pressure gauge and the tester P/N 1302691A is
required for performing this test. A suitable gauge with
a range from 0 to 15 bar (0 to 220 PSI) can be procured
from your authorized Webasto dealer.
NOTE: The fuel pump and the fuel hoses must
be replaced every 5 years.
CHECK
– Exchange control unit with tester and swing burner
head open (see Sec. 8.5.1).
– Remove nozzle.
– Screw pressure test gauge into nozzle holder.
– Switch on heater motor via tester.
– Press fuel solenoid button on tester.
– Read pressure gauge. If adjustment is required,
release button and turn pump pressure screw 1/8 of
a turn at a time in or out to increase or decrease
pressure (see Fig. 10 for location of pressure screw).
– Repeat testing and adjustment steps until pressure is
within specified range.
– Switch off heater switch on tester.
– Unscrew pressure test gauge.

Does this seem correct? Most notibly the adjustment of pressure
Thanks,
Bryan

[bryanhes]

I know that was long winded but what I gather from reading back thru the service manual and looking at my pump is that I should be able to turn the adjusting screw until it read 145 psi with a tester and it should work with a .35 nozzle as stated in the requirement from Webasto on that particular nozzle.

Does this make sense?
Bryan

[Nick Badame Refrig/ACC]

Yes Bryan, it makes sense.

If you like, I'll send you a .35 and you try it!! if it works for you, then you can pay me. If not mail it back no cost to you.

Just PM me your ship address.
Nick-

[bryanhes]

Nick,

I sent you a PM. Maybe this can determine if we can get around some of the corporate recommendations for older systems.

Thanks for the help.

Clifford,
Thank you as well

Bryan

[Nick Badame Refrig/ACC]

It's in the mail today.

Nick-