HD5G Fuel Guage Pressure Line
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=202691
Printed Date: 23 Nov 2024 at 1:03am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: HD5G Fuel Guage Pressure Line
Posted By: Les Kerf
Subject: HD5G Fuel Guage Pressure Line
Date Posted: 13 Aug 2024 at 8:02am
|
The fuel line going to the gauge blew out on my Son-in-law's HD5G. Our local NAPA store that usually supplies our hydraulic stuff told us they don't have the appropriate line or fittings to build a new piece for us. Any recommendations are welcome.
|
Replies:
Posted By: Codger
Date Posted: 13 Aug 2024 at 11:07am
|
I've usually ran a 1/8" copper line with compression fittings to a Stewart-Warner gauge if that is what you have. I think I have a copper line "kit" for this at the shop also. I'll see if I can locate it yet this afternoon. I remember purchasing, but don't remember using it.
------------- That's All Folks! |
Posted By: Les Kerf
Date Posted: 13 Aug 2024 at 12:51pm
I'm pretty sure this is the original gauge (which still seems to work fine) and they used a unique fitting that none of our local shops have been able to match thus far. Son-in-law told me today that it sprung the leak because it rubbed on something, we are thinking about just cutting it and putting in a barbed coupling with hose clamps. The pressure is well under 100 psi on this application and the remainder of the hose looks serviceable.
|
Codger wrote:Posted By: Ray54
Date Posted: 13 Aug 2024 at 4:16pm
|
The big swivel nuts on the fuel line have SAE NF treads the same as bolts. If you carefully use a cut off wheel on 4.5 inch angle grinder you can cut the old crimp off. There are barbs on the existing brass,copper, bronze what ever it really is on the fitting. Just use the appropriate size fuel hose, and a clamp. If your close to original the extra fitting in there is to take the pulsing out so gauge is not jumping the neddle as much.
|
Posted By: Coke-in-MN
Date Posted: 14 Aug 2024 at 9:07pm
|
The fuel line is braided with a fitting that is hard to match . Also as the fuel system pulses as injector operate , a restrictor is needed in line to stop pulses registering on gauge , this can be as simple as a restrictor fitting with something like a 1/16 hole in a plugged fitting . I used a commercial snubber fitting to stop pulses which has a internal piston as well as flow restriction . Oil lines to gauge and to filters use the same fitting to terminate the lines , again with the bypass filter system a restrictor is needed in those lines also to meter oil going to filter and to engine itself ------------- Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful." |
Posted By: Coke-in-MN
Date Posted: 15 Aug 2024 at 11:11pm
|
The AC fuel gauge has a round diaphragm on back that acts like a snubber to limit pulsing . If replacing with another gauge is where the problem comes - otherwise braze a new fitting to back of old line fitting and make new line ------------- Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful." |
Posted By: Les Kerf
Date Posted: 17 Aug 2024 at 12:10pm
|
Thanks all for the input, life has temporarily intervened and I have had to postpone this project; I hope to get back to it in a week or so. |