How To ? Take Off Prescreen? Check Overflow Valve

[Jeff H]

I would like to take off the the fuel heater screan and clean it. Just wondering how to do this? Will I need any new seals for also?
Where is the overflow valve? Sounds like that is something I could check and inspect also?

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95 Dodge Ram reg cab,2500,5spd,Tweaked & Peaked Cummins Diesel, MODS, K/N filter,dual exhaust 5'' tips,Lost muffler,turbo silencer, ACCESORIES,ISSPRO turbo & pyro. gauges. Shell Rotella in pan. Fleatgaurd filters. 140k. on the OD.
If you can smell this message. I Farted

 

[Dave Fritz]

Instructions (with photos) for removing the screen are posted here: http://dodgeram.org/tech/dsl/filter/pre-filt_clean.htm

The quad gaskets are available as Fleetguard PN 3834185-S for $0. 66 each from Cummins.

A complete pre-filter repair kit is available from:
Dodge dealers for $42 - Part number 04762962.
Cummins/Fleetguard for $6 - Part number 38454000-us.

Dave


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1994 2500HD 4X4 modified for off-road camping
2001 2500 ETH/DEE QC SB 4X4
Fritz's DodgeRam.org

 

[Red Rocket]

I have had multiple posts about this overflow valve, do a search with my username, and you should find useful info.
Nick

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1998 2500, 12 valves, SLT, auto, 3. 54, 285/75-16, TST 230/605, t/c switch, DiPricol EGT/boost guages,K&N,camper special, 65,000 miles(2/01),
12 ton goosneck!
'01 Polaris EDGE-X 600

 

[Missouri Mule]

Jeff,
Pre filter is easy deal. Just make sure your not directly under neath when the diesel starts to come out. (Bring a Pail with you. )
As I recall 10mm socket/extension/rachett will fit bolt on bottom. Inside screen will have nut holding it on. I had no problem with the gasket.

With the overflow valve, one it is located on front/back/top of injector pump with banjo screw with fuel line(metal tubing) coming out of it and running behind injector pump.
To do preliminary just reasch down or use stick(broom,mop,rake... ) and push in/out on your primer button. When enough pressure builds up you should be able to hear the fuel going thru it. If you hear it it's working if not?.
An exact test would be to do a fuel pressure test. With engine ruuning and test guage on, stick you hand(you mite want pliers or vice grip)down under by injector pump and grab rubber hose and squeeze if pressure comes up you have a bad valve, if it stays down bad lift pump.
If your getting over 20 psi on outlet(supply line for injector pump) line of fuel filter everything(valve and filter) should be working OK. You will aLso need to rev engine to around 2000 rpm and check pressure.
The return fuel valve releases fuel out of injector pump at around 22 psi.
Go a head and check archives and recent post for acceptable pressure for different rpms.

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Bill Thomas
Missouri Mule - 96 Wht 4X4 ST CC,5 spd, 3. 54, 8 ft bed, 1 ft high cheater boards.
99 Freightliner bl/wht FL60 ISB-5. 9 24v,215 hp,520 tq,6 spd, 3. 59 nsr,16 ft box, 19. 5 tires,Wt/gvw 11,000/23000

 

[illflem]

Someone here posted the excellent idea to place a plastic bag over the heater after breaking the nut but before removing the bowl. Diesel in the armpit isn't my idea of fun.

 

[mikepvg]

The Pre-filter job can be done from the top very easily.

Don't forget that there is a $0. 66 quad o-ring on TOP of the fuel heater also that is worth looking at while your taking this apart. Fritz noted the PN above.
After the pre-screen bowl comes off, you'll have access to the allen bolt that holds the heater on. This bolt goes right thru its center.

#ad

Mike

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94 2500HD 5sp 4. 10LSD 4X4 RWAL w/GearVendor OD, K&N Oval w/ Pre-Filter, Straight Exhaust, Geno's Fumotovalve, AW-Direct Idle Controller, DiPricol Boost/Pyro/Fuel, Mag-Hytec Rear, 124K miles. Halon Protected, NRA Member. V1.

 

[Jeff Burke]

I too checked mine from the top, no problem at all.

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'96 4x4 Auto, Ext Cab, K&N Air, Long Box, Kitty Be Gone, TST #6 Plate, AutoMeter Pyro and Boost Gauges, Jannetty rebuilt transmission with Pro-Torque Convertor

 

[Deezul1]

Jeff
My overflow valve went bad on me and the symptom was power loss at freeway speed especially towing. I removed the spring in it and stretched it to . 550 and its working great.

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96 SLT Laramie CC 5spd, 3. 54, no muff, no cat, 5"turn down tip. (its for sale)
. Member NRA/USPSA