apache

Ok so Ive read several posts regarding fuel heaters and screens. I would like to check and clean the screen but know nothing about it. Its dark down there but I see what looks like a first gen fuel pump above my lift pump, looks like a 1/2 " or so line to it. Bottom looks like a cast plastic deal where the screen is ???? hows it come apart? Will I need a new O ring or? and regarding restarting it, do I need to prime it or anything. BTW this a 95.
Thanks bunches.
Scott

TRCM

you will need to prime it

it should have a nut cast into the bottom, and it is best done from underneath. Mine is cast aluminum. i think the nut is 17 mm.

I'd go to a cummins shop and buy a new screen kit. it has the oring and a new screen and nut for the screen. it is like 10 bucks for the kit.

sorry, don't have the part number handy

fschiola

Here's some info on that job. Click

apache

Thats extremely helpful, you guys kick booty At 140K should I assume its dirty? Hum ,12K intervals... dunno know about that. Im gonna do it after I find the repair kit somewhere.
Thanks again.
Scott.

fschiola

You can get a kit from Cummins, I don't have the part # though. You might not need to replace anything just claen it out.

infidel

12k is a way overkill unless you're filling your rig from a rusty 55 gallon drum. I did both of mine at the first 20k, all that was on them was a few plastic shavings that looked like tank manufacturing debris. Haven't touched the screens since then with 200k more on the clock.
I do use fuel pressure gauges though that will warn of plugging in the pre or main filter but they have never indicated plugging. I change the main filter about once a year, or about 30k.
It all depends on where you get your fuel. One bad tank and things could be plugged in ten miles.

Fueling around

Strainer kit 3845400-S and under $10 as TRCM posted.
I noticed the package is labeled 384540000 S

apache

Thanks again guys, I`ll wait till I find a repair kit, Im prone to destroying things so I can see the gasket getting ruined. Geez Bill, 30K between filters Thats kinda assuring to know. I been doing mine every 10k which has worked out to about 6mos. I hope my fuel is clean, I stay from stations that are having tanks filled. Probably overkill again. I startin to feel like Im maintaining it to death if thats possible. Guess it beats a breakdown on the road.
Thanks a bunch.

infidel

Most folks don't realize that every fuel station pump has a filter in it to protect the metering system. Should keep out the big stuff anyway.
Whether or not they are maintained is a different story

apache

I used to see that, they were externally mounted. Now I dont see em anymore, hopefully they inside the pumps housings??. Also wondered about many stations now selling diesel that were gas only. They never installed any new tanks either. how well can a tank be emptied? dont want any mixed fuels.

b.lee

I think it's best done from the top so you dont get fuel in the face.
yes it is a 17mm.
I got the kit from cummins yesterday for $9.

TIMMY22

yea, I was gonna say If you do it from underneath as soon as you crack her loose the fuel is gonna follow down your ratchet extension right down your arm and into your armpit.