primary fuel filter help

rizzo · Mar 11, 2006

I took the fuel filter (canister on frame under drivers feet) off today and it was pretty dirty. Non of the filters I got matched. So I went to NAPA and we couldn't match anything up. The filter number is M-3962

G744 · Mar 12, 2006

The Facet company makes them. They are the only source as far as I know for the original.

dg

CaptainRPM · Mar 12, 2006

if its a 813 with the Cummins the filter number from napa is 3401(napa part number) for fuel filter its 45 bucks i just changed mine

rizzo · Mar 12, 2006

it is a M543A2 wrecker

poppop · Mar 12, 2006

The chart here on site says NAPA 3511. I changed all mine on my M54 dump with NAPA filters. Check the chart, it has lots of information, like the NAPA gaskets won't work but get John Deere M96t or NAPA 5221 or 5406. These are for the secondary filters.

rizzo · Mar 13, 2006

I tried the 3511. Its not the right one.

rizzo · Mar 13, 2006

is the brown stuff suposed to be in there?

DaveP · Mar 13, 2006

Holy smokes !!

rizzo · Mar 13, 2006

yeah thats what I said!!

SixBuy · Mar 13, 2006

Good Gosh rizzo,
I think that's the same stuff that ate part of Chicago before the Army beat it down with flamethrowers!
And the truck was still running???
That filter looks like the one out of my M35A2 and the Napa filter fit although I believe it looked a little different
from the original. Baldwin also makes a fit but the gaskets are different.
Good luck!

rizzo · Mar 13, 2006

the truck didn't run. I think it sat for a long time.
the Napa filters I have one looks the same size but the hole in the middle is too big.

SixBuy · Mar 13, 2006

As I recall, that's the way mine was too. But I seem to remember there was a reason why it worked anyway!
Sorry, I've slept since then. The exploded view of the filter cannister ought to help...

clinto · Mar 13, 2006

That has to be the wrost looking filter I have ever seen......

FSBruva · Mar 13, 2006

Ew....

If it smells as bad as it looks, I would probably be done....

rmgill · Mar 13, 2006

Yaay, fuel tank sludge. It took two filter changes on my 813 and a siphoning most of the fuel out into a filter to get that all cleared up. Fuel went back into the tank after being run through some fine cloth to filter it again. Interestingly fine cloth seems to catch the water and as more water is absorbed by the filter it slows down the filtration of the filter.

ken · Mar 13, 2006

The hole in the middle that looks too big should work. The concave washer that sits on the cotter pin that goes through the shaft is what seals on the filter. And the cork seals on the filter housing on the top.
The napa filter is a wix, the wix # is 33511.
Make sure the washer lip is facing up on the bolt shaft so it will bite into the cork. If you put the washer lip down it won't seal.
You really should change the filters on the drivers side of the block also. Wix#33512. And i would clean out the fuel tanks and clean the pickup screen in the lift pump and transfer pump. Before you loose the injector pump.

rizzo · Mar 13, 2006

CaptainRPM said:
if its a 813 with the Cummins the filter number from napa is 3401(napa part number) for fuel filter its 45 bucks i just changed mine

the 3401 is just a hair too big. But thanks for the help anyway.
I think the 3401 would fit my M810 with the cummins. It looks about the right size.

rizzo · Mar 13, 2006

ken said:
The hole in the middle that looks too big should work. The concave washer that sits on the cotter pin that goes through the shaft is what seals on the filter. And the cork seals on the filter housing on the top.
The napa filter is a wix, the wix # is 33511.
Make sure the washer lip is facing up on the bolt shaft so it will bite into the cork. If you put the washer lip down it won't seal.
You really should change the filters on the drivers side of the block also. Wix#33512. And i would clean out the fuel tanks and clean the pickup screen in the lift pump and transfer pump. Before you loose the injector pump.

I pulled the two other filters and they look like the first one. I will replace those I have the right filters. I see what your saying about the frame filter. they had one at napa that was the right size but the center hole was too big.

ken · Mar 14, 2006

Was the hole in the middle too big for the bottom washer? The filter will be very loose on the bolt shaft. you will have to center it on the washer to line it up in the filter housing.

rizzo · Mar 14, 2006

I don't think the whole is too big. I will find out today. I understand what your saying about centering.

primary fuel filter help

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