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Old 04-05-2017, 11:29 PM   #1
Mini-Skoolie
 
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Oil Pressure Gauge Line Replacement

Hey guys,

I was re-installing my instrument cluster today when I accidentally clipped the line that brings oil into the instrument panel for pressure measurement. I found parts to fix it temporarily at home depot, but would like a real replacement part for long term use. I haven't been able to find what I'm looking for on any of my normal school bus part websites, does anybody know where to look for one of these?

Thanks!
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Old 04-06-2017, 06:23 AM   #2
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Any auto parts store can help you with the parts. Looks like a normal manual oil pressure gauge hook up. You could either replace the whole hose or put a joint in, both work. Just need to know size of hose and fittings.

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Old 04-06-2017, 08:36 AM   #3
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Just how did you do that re-installing the cluster? A big cut to be an accident isn't it?
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Old 04-06-2017, 09:01 AM   #4
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i would call that a compression fitting. imo.

looks like all the parts are there, can't you just shorten the line a bit? get the brass bits out. make a clean cut and put the brass bits back, and screw back it in.

you should be able to get a coupler if you need to extend the line a bit.

by the look... i'd say 1/4" tubing to 1/8"pipe compression..... female adapter

if not "compression" then its a "flare" fitting, but compression is my first guess
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Old 04-06-2017, 09:31 AM   #5
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looks like compression to me... you can buy those ferrell fittings at lowes or Home depot.. get the ones made for nylon line.. (ie refrigerator ice maker line).

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Old 04-06-2017, 01:22 PM   #6
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Thanks for the advice.

@BlackJohn I was putting the dash back in, had only attached the one tube, went to grab a tool and the dash fell over and snapped the line.

@Turf I was thinking the same thing but the brass ring on the tube fits on quite tight and doesn't seem to want to come off or go back on, I'll give it another try...
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Old 04-06-2017, 03:45 PM   #7
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I had to replace mine as it was weeping on top of the oil filter Oreillys has either a nylon kit or a copper kit. Both are cheap and the nylon one I bought works fine. Copper is cooler.Equus 9801 - Nylon Tubing Kit | O'Reilly Auto Parts
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Old 04-06-2017, 04:18 PM   #8
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Wow, hope that is the only damage. Let us know if everything works when back together. Sometimes Murphy's law applies to school buses. Sudden shocks like that are not good for instruments. Hope your luck is good.
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Old 04-06-2017, 05:01 PM   #9
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I agree: it looks like 1/4" OD plastic tube. There's an insert inside the tube and the ferrule on the outside. When the connection is tightened the ferrule is deformed (crimped to a smaller diameter) and holds the tube tight between it and the insert. You likely won't get them apart without damaging the ferrule. Even if you did, it may not slide onto new tube because it's probably too small now. Brass ferrules are tricky to use on plastic tube anyway because if they're the slightest bit out of true when tightened they'll cut the tube.

If you look in the evaporative (aka "swamp") cooler aisle at your favorite plumbing supply you'll probably find plastic ferrules, likely white in color and made of Delrin. They aren't symmetric they way the brass ferrules are. One side has a longer taper than the other; it should be installed so that side goes toward the socket of the female connection. Put a new brass insert inside the tube as well.

Waayyyy down at the bottom of the page on https://www.plumbingsupply.com/compress.html there's a picture that shows how the pieces go together.
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Old 04-06-2017, 06:00 PM   #10
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What they said 👍

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