What fuel line to buy?

[SUPERSPORT]

What fuel line to buy? Fixed, page 3.

1991 M923A2.

Fuel line from copper line out of tank to big fuel filter. It was wet down where it connects to copper line. Tracking down my lose of prime.

Went to the 3 places around here I know of to try and get a new one made or new hose for my fittings. No help and they all named other places I already knew of.

Parker acted like they didn't have the fittings and would have to order. Cost about $55.

I read the sticky above with spread sheet. The Parker fitting it shows looks just like mine so I don't see why he couldn't re-use it. The hose he said I needed was gray. The hose in the sticky is blue and calls for HY fittings for diesel. Not the 82 series the sticky has listed and like I have. Sticky also doesn't list the 90* fitting on the other end.

1. Anyway, Exactly what hose do I need and where to get it? Is it 1/2" I.D.?

2. Another thing, Anyone just run a rubber line straight from tank to filter? Do away with the copper section?

3. I pulled the pick up tube up from tank to check it, fine. Anyway, what kind if sealant do you use on those threads? It had something like pipe dope on it but was dried out and crumbled to dust.

 

[Suprman]

Get barb ends and use regular fuel line with hose clamps
you cut to length yourself.

 

[doghead]

Indian Head shellac to seal the threads and gasket surface.

 

[simp5782]

The part numbers for the line and fittings is located in the parts spreadsheet for the 5 tons. It is pushlok line and parker fittings from your local hydraulics shop.

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[SUPERSPORT]

The part numbers for the line and fittings is located in the parts spreadsheet for the 5 tons. It is pushlok line and parker fittings from your local hydraulics shop.

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I have an actual Parker store near me. I went there yesterday.

As I said in OP spreadsheet had some discrepancies. The 90 degree fitting on the filter end isn't listed. The fitting that is listed is an 82 series that Parker says uses a gray hose for diesel. According to Parker employee and Parker website the blue hose listed in spreadsheet uses HY series fittings for diesel. They are crimp type.
"Diesel fuel – approved only when coupled with HY series fittings".

Anyway, I found another Parker store on the other side of town. I may drive out there to see what they have in stock.

 

[SUPERSPORT]

Get barb ends and use regular fuel line with hose clamps
you cut to length yourself.

I can reuse the barb end fittings I have just need to find proper hose.

 

[SUPERSPORT]

Indian Head shellac to seal the threads and gasket surface.

Thanks.

 

[Csm Davis]

Get barb ends and use regular fuel line with hose clamps
you cut to length yourself.

It is not regular fuel hose, it is high pressure fuel hose made for push lock fittings, regardless of fittings regular fuel hose will collapse and not work properly because of the draw through system the vacuum will cause the soft line to fail.

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[Csm Davis]

I have an actual Parker store near me. I went there yesterday.

As I said in OP spreadsheet had some discrepancies. The 90 degree fitting on the filter end isn't listed. The fitting that is listed is an 82 series that Parker says uses a gray hose for diesel. According to Parker employee and Parker website the blue hose listed in spreadsheet uses HY series fittings for diesel. They are crimp type.
"Diesel fuel – approved only when coupled with HY series fittings".

Anyway, I found another Parker store on the other side of town. I may drive out there to see what they have in stock.

Ask for 836-8-BLK this should get you a black hose that is rated for diesel fuel and the type 82 fittings

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[Floridianson]

Not to step on toes but I would not use hose clamps with barb fittings.

 

[SUPERSPORT]

The front hose is sucking air also. From filter to lift pump.

I drove to the main NAPA around here. Old school with a machine shop.

They can make them with crimped on fittings and some heavy industrial hose. My dad was a mechanic at Yellow Freight and they had all their lines made there.

Problem is they are gonna cost around $150 compared to around $80 from Parker. I can get them from NAPA today but will have to wait for Parker to order parts. The NAPA is more expensive but seems like a more bullet proof set up.

Should I go with the crimp on from NAPA or stick with the push lock that is failing?

 

[doghead]

I would just replace the rubber hose, they lasted 25 years plus...

 

[doghead]

I still have no idea which truck you are fixing.

All the 809 and 939 series trucks are notorious for loosing prime due to aged rubber lines(especially the one from the filter to the IP.

Change all rubber hoses and be good for a few more decades.

 

[SUPERSPORT]

Sorry, thought I posted that.

1991 M923A2.

I'm talking about rubber lines from fuel tank to big filter on fender and from that filter to lift pump. The line from lift pump to small filter is a hard line and the line from that small fliter to the IP is also a hard line.

 

[silverstate55]

As frustrating as loss-of-prime problems can be with these trucks, the NAPA price sounds like a small price to pay for instant peace of mind...plus you do have your Dad's recommendation based off of experience.

 

[Ford Mechanic]

I use the push lock stuff here all the time, works great. Nothing wrong with the crimped on stuff either of you can stand the price.

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[Csm Davis]

The front hose is sucking air also. From filter to lift pump.

I drove to the main NAPA around here. Old school with a machine shop.

They can make them with crimped on fittings and some heavy industrial hose. My dad was a mechanic at Yellow Freight and they had all their lines made there.

Problem is they are gonna cost around $150 compared to around $80 from Parker. I can get them from NAPA today but will have to wait for Parker to order parts. The NAPA is more expensive but seems like a more bullet proof set up.

Should I go with the crimp on from NAPA or stick with the push lock that is failing?

Crimped on or push-lok are both going to be a good setup and I have seen both on stock trucks I believe the military went to the push-lok for easier field repair and that is why I also recommend them. But they both will give approximately the same service life but the push-lok is cheaper over all.

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[Floridianson]

My NAPA at one time carried the correct fitting's that just screw in to make the hard line ends push lock. Also I found when using the push lock stuff is to use some O ring lube on the big fuel line inside as it help to get the hose up to the plastic ring easy.

 

[Floridianson]

Is it not the hose that is failing not the push lock fitting. As I said above by just change to the correct fitting on the hard line and then it will always be easy to change out the hose. If you have the push lock then I would stay with it. Someone will thank you later. One razor knife and the hoses are done.

 

[Andrmorr]

Ask for 836-8-BLK this should get you a black hose that is rated for diesel fuel and the type 82 fittings

Do you happen to know a source for the 836? I went thru this about a month ago and you can find 834 but 836 is the unicorn of the fuel line world if you can find someone willing to sell by the foot. I'd be interested in a source if anyone has one...also would be interested in hearing any tips/tricks to get the line up onto the fittings that you can't get to well (example next to the frame)...Thanks...