Fuel Heater/Spacer Elimination

[TBowles]

Does anyone have the part number for the threaded fuel filter adapter that will eliminate the fuel heater & take the place of the present threaded adapter that holds the fuel heater between the fuel filter and the head? I would like to get rid of the heater/spacer. I believe Greenleaf mentioned this in an earlier post but I do not recall a part number.

 

[Greenleaf]

I don't know if I have the pn. It's simply a threaded pipe (nipple) that the filter element threads onto. Not all application use the heater element as most probably are aware.



I have yet to remove one from either of my trucks but it's certainly one of the 27 items that are not required.

 

[PCompton]

How to remove fuel heater on 90 CTD

I am trying to figure out how to remove the fuel heater between the head and the fuel filter. It is leaking fuel. I tried to spin it off, but it did not seem to seperate any. I would greatly appreciate any advice. The problem seems to be the cause of a terrible miss.

 

[MMeier]

IIRC, it is only held on by the threaded pipe fitting that the filter spins onto. Should be able to remove fitting, remove heater thing, then screw the fitting back in , anyone else?

 

[Greenleaf]

No. The fuel heat adapter pipe nipple is too long. I have removed one and found that I would have to replace the pipe nipple with a shorter one.

If you remove the nipple you will see what I mean. Try it for yourself. It can't harm anything. The square cut seal ring will likely need replaced to prevent a fuel leak at the heater.



I would caution againt the urge to ues vice grips. The fuel filter must thread onto the bottom of that nipple you just destroyed.

 

[bgilbert]

FAT screwdriver, chisel or I used a long prybar (as a screwdriver) from underneath the truck, with a wrench used to turn the prybar.

 

[Greenleaf]

The tool of choice is a drag link adjuster. I can post up the Sears part number of tool if you like... ... ... . ????





GL

 

[PToombs]

The industrial engines, (that don't have a heater) have a hex for an allen head inside the middle of the nipple. If it has primary and secondary filters the nipple has a nut to hold the extra housing, then the filter screws on. I've never looked inside the one on the truck to compare.

 

[Greenleaf]

My P-Pumped bus engines are as you describe. Hex inside of the nipple.

 

[TBowles]

Have part number

After a little research i have come up with the part number that allows the elimination of the fuel heater. Cummins part # 3925954 "Filter Head Adapter" and yes it has the internal hex for installation instead of the cheesy slot for a screwdriver. Cost approximately $15.

 

[Kartracer]

This is what I found that worked great for removal. A washer of the correct thickness, about an inch in diameter. You can grab the washer with pliers or whatever.



I also just got a new square cut seal from the local Cummins dealer for my fuel heater. I think it was less than $2. My seal was lost when the engine shop took it all apart during my headgasket repair.



-Steve