BCM Community
Welcome,
Guest
. Please
login
or
register
.
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
BCM Home
Forum
Help
Forum Rules
Search
Login
Register
BCM Community
»
Bus Discussion
»
Bus Topics ( click here for quick start! )
(Moderator:
Nick Badame Refrig/ACC
) »
4104 Fuel Line
« previous
next »
Print
Pages: [
1
]
2
All
Go Down
Author
Topic: 4104 Fuel Line (Read 10419 times)
4104SoFl
Orv
Full Member
Posts: 121
4104 Fuel Line
«
on:
August 06, 2013, 05:08:29 AM »
Looking for info on replacing fuel lines.
Have a leak in the wheel well area.
Ideas / Suggestion
Thanks
Orv
Logged
Orville Meyer
Loxahatchee, FL
Hoping for the best / Preparing for the worst
bevans6
Hero Member
Posts: 6205
1980 MCI MC-5C
Re: 4104 Fuel Line
«
Reply #1 on:
August 06, 2013, 05:52:26 AM »
Hard line or flex line leaking?
Brian
Logged
1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Allison MT-647
Tatamagouche, Nova Scotia
4104SoFl
Orv
Full Member
Posts: 121
Re: 4104 Fuel Line
«
Reply #2 on:
August 06, 2013, 05:55:54 AM »
It appears to me to be hard line from tank to first fuel filter
Logged
Orville Meyer
Loxahatchee, FL
Hoping for the best / Preparing for the worst
bevans6
Hero Member
Posts: 6205
1980 MCI MC-5C
Re: 4104 Fuel Line
«
Reply #3 on:
August 06, 2013, 06:44:14 AM »
You need to identify the exact location and cause of the leak. If it is a crack in the line, the right way to fix it (and probably hard if not impossible) is to replace the entire line with new. The other way is to splice it with a section of hard or flex line. Maybe you could go half-way with a section of new line from the crack back to the engine.
Brian
Logged
1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Allison MT-647
Tatamagouche, Nova Scotia
4104SoFl
Orv
Full Member
Posts: 121
Re: 4104 Fuel Line
«
Reply #4 on:
August 06, 2013, 09:01:11 AM »
I'm thinking along the same lines.
Can I use copper tubing?
Logged
Orville Meyer
Loxahatchee, FL
Hoping for the best / Preparing for the worst
belfert
Hero Member
Posts: 6532
Re: 4104 Fuel Line
«
Reply #5 on:
August 06, 2013, 11:43:33 AM »
If it was me, I would probably use flexible fuel lines. My bus has all flexible lines, but it is a 1995 model. Fuel line technology has come a long ways since your bus was built.
Logged
Brian Elfert - 1995 Dina Viaggio 1000 Series 60/B500 - 75% done but usable - Minneapolis, MN
bevans6
Hero Member
Posts: 6205
1980 MCI MC-5C
Re: 4104 Fuel Line
«
Reply #6 on:
August 06, 2013, 12:12:21 PM »
The problem with copper is that the commonly available "hardware store" alloys are prone to work hardening and cracking from vibration. I don't know if the factory lines would have been copper or steel, but I would use steel if I had to put in a new hard line. Of course I would also tend to use a flexible line if it could be made to work properly. That line should be under little to no pressure if it is from the tank to the first fuel filter, it should be under suction.
Brian
Logged
1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Allison MT-647
Tatamagouche, Nova Scotia
4104SoFl
Orv
Full Member
Posts: 121
Re: 4104 Fuel Line
«
Reply #7 on:
August 06, 2013, 12:28:16 PM »
I agree. I'm going to see about a new line material.
Have pulled the water tank out of the way to get to the lines.
It is leaking right where it goes thru the wall just before the tires
There are several lines in this area both copper and steel
Looks like just the two fuel lines are steel (Main & Return)
Looks like the correct way to fix it would have been to pull up a floor panel.
That's not going to happen
Logged
Orville Meyer
Loxahatchee, FL
Hoping for the best / Preparing for the worst
Len Silva
Hero Member
Posts: 4086
Angle Parked in a Parallel Universe
Re: 4104 Fuel Line
«
Reply #8 on:
August 06, 2013, 12:46:02 PM »
I would replace it with plastic. Nylon DOT air brake tubing will work well.
Logged
Hand Made Gifts
Ignorance is only bliss to the ignorant.
Utahclaimjumper
Hero Member
Posts: 1792
Re: 4104 Fuel Line
«
Reply #9 on:
August 06, 2013, 01:10:28 PM »
Many years ago I replaced mine with pre made up steel brake line by replacing a section at a time, the end fittings already on the lines makes it an easy job.>>>Dan
Logged
Utclmjmpr (rufcmpn)
EX 4106 (presently SOB)
Cedar City, Ut.
72 VW Baja towed
4104SoFl
Orv
Full Member
Posts: 121
Re: 4104 Fuel Line
«
Reply #10 on:
August 06, 2013, 03:13:10 PM »
Well before I make up my mind, I've got to get the material that's wrap around both the copper and steel lines going thru the bulkhead in front of the tires removed. That is where the leak is. Any ideas what this stuff might be?
Logged
Orville Meyer
Loxahatchee, FL
Hoping for the best / Preparing for the worst
bevans6
Hero Member
Posts: 6205
1980 MCI MC-5C
Re: 4104 Fuel Line
«
Reply #11 on:
August 06, 2013, 04:21:38 PM »
Assume it's asbestos based and take appropriate precautions. Seriously.
Brian
Logged
1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Allison MT-647
Tatamagouche, Nova Scotia
luvrbus
Hero Member
Posts: 26066
Re: 4104 Fuel Line
«
Reply #12 on:
August 06, 2013, 04:32:18 PM »
It's just a corrosion barrier made of cloth
Logged
Life is short drink the good wine first
Utahclaimjumper
Hero Member
Posts: 1792
Re: 4104 Fuel Line
«
Reply #13 on:
August 06, 2013, 05:08:40 PM »
I agree, I've worked with the stuff a fair number of times and its only canvass.>>>Dan
Logged
Utclmjmpr (rufcmpn)
EX 4106 (presently SOB)
Cedar City, Ut.
72 VW Baja towed
chessie4905
Hero Member
Posts: 7101
Re: 4104 Fuel Line
«
Reply #14 on:
August 06, 2013, 05:41:25 PM »
Just cut the line in front of bulkhead and install a coupler with ferrule on the steel line and go from there with braided ss line with appropriate connector to check valve at engine firewall. Probably has a hole from salt spray from years ago.
Logged
GMC h8h 649#028 (4905)
Pennsylvania-central
Print
Pages: [
1
]
2
All
Go Up
« previous
next »
BCM Community
»
Bus Discussion
»
Bus Topics ( click here for quick start! )
(Moderator:
Nick Badame Refrig/ACC
) »
4104 Fuel Line
SimplePortal 2.3.7 © 2008-2024, SimplePortal