Just got new lines from Clay. Originals have 140k miles on them. I would like to replace them before one blows on the side of the road, and keep the old ones in my travel box.

I know this is a fairly straightforward and simple procedure, and I'm not afraid to do it (I've had HPOP lines off before), but I just want to touch base before I do it, because....

...I just got my engine all put back together, sealed-up, and leak-free. Everything is CLEAN, and I'd like to keep it that way. When I pulled the hoses off of the HPOP for the repairs I did to it a few weeks ago, I don't remember a huge amount of oil seeping out of either the pump or the lines. Do I need to evacuate the HPOP reservoir to keep a massive amount of oil from coming out? The pump still has the check valves in the outlets.

How about the other end? When I get both ends free, I'm guessing all of the oil will drain out of the hose?

Finally, I have an '02 California truck, not sure how much different it is from the rest, but there's a lot of clutter around the passenger side connection to the head. There's a cast metal box with two large connectors. Any harm in disconnecting these? Or, maybe I can just take the bracket loose that holds that and the GPR?

Just want to minimize the mess and do this as cleanly as possible. Any advice would be appreciated.

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Do it when the engine is cold. The oil is a bit thicker and will not make a mess. I have swapped out a few sets of HPOP lines and there has never been an issue with making a mess. Just have a shop rag there and you will be fine.

The cast metal box is your GPCM as you do not have a GPR on your cali truck. The relay you see is the AIH relay. On a GPR truck you will have two of those style relays.

 

Ah, cool, thanks for that info. I knew the glow plugs had solid state controls, I just thought it was in the relay-looking box. I appreciate your clearing that up for me.

Sounds like there's no problem unplugging any of that, then. I would like to just get a few things out of the way on the passenger side head, if I can. All of the other fittings are pretty straightforward.

 

Unplug it all...

Replacing HPO lines is not regular maintenance, not sure where that got started...

I've NEVER replaced a HPO line... Worked on trucks with over 400k on them, factory HPO lines.

I've replaced O rings and such, but not the lines.

How do you know the new one's wont blow in 300 miles?

 

I KNOW!!! Don't think that hasn't crossed my mind. Repeatedly. There's a part of me that wants to just put the new hoses and a gallon of oil in my tool box and call it good.

Especially because I could EAT off of my engine right now, and the rest of my truck doesn't drip or leak anywhere.

But, if I DID choose to replace them, I'd like to put some miles on them close-to-home before taking it on a long trip. Plus I'd rather change them on a cool dry engine than in a hot mess on the side of I-5.

Maybe this post should have been a poll, "To Change or Not Change HPOP Hoses?"

 

We have blown lots of HPOP hoses, mostly on IH trucks but some PSDs as well...I can think of 8 or 10 field calls in the last 12 months or so. Seems the frequency has picked up lately. So much so that we are working through a program to change out all the lines in any truck that is older than 10 years.

I showed a pair of the IH replacement 7.3 hoses to our vendor who makes our field calls and he said the new hose material is much better than the OEM stuff. He gave me some tech sheets for a product he carries that is equivalent to what IH is now using. Impressive stuff, the upper limit for oil temp is much higher than the more common steel braided lines. From a fleet perspective, $200 for a pair of hoses is cheap insurance IMO.

 

Well, that's compelling... Are the IH hoses and the Ford hoses the same? I got mine from Clay, and he said they were "straight from Ford" (the only reason I even asked him is because it was the first thing I have EVER received from Ford that was not wrapped and/or marked with a part number).

Anyway... These new hoses are indeed stout, and they have a plastic coating over the braid. They look like they are great quality.

 

A friend of mine lost one at 200k and it left him on the shoulder of I95 for a few hrs.
Our mobile mechanic borrowed my Riffraff line tool this past week because one of his customers have been experiencing line failures and wanted new hoses on all of their trucks.
Personally it's peace of mind. 2500+ psi of hot oil in a rubber hose for over 12 years...I have new ones on my truck!

 

They are the same. I got mine at International. Post #20 has the pics of the hoses.
https://www.ford-trucks.com/forums/1...pop-lines.html

 

I think they are the same part. If I get time next week, I will try and find the tech sheet and post it here.

 

IH part numbers:
400N/1880061C1
400N/1880070C1

 

I say park your truck, don't put on the hpop lines that way you can continue eating your lunch off your motor, never wear out your tires & just think you'll never have to buy fuel again.

 

A clean motor is a good start. When I changed HPOP lines as a PM one did not want to let go of the fitting at the HPOP. I think it was due to grunge build up over ten years. Never got the hose to let go of the fitting, even whacking the snot out of it on the bench. Ended up with a new HPOP fitting from Bob at Diesel o rings. The new fittings have an o ring that is covered when the hose is installed properly, a nifty visual check. Also would help keep the connection clean for future disassembly. Wish I had them on my oil galleys! My passenger side hose seemed to click on solidly but blew off when attempting to start, lost about a half quart of oil, covered the GPCM. Both times. Great way to "rust proof" a clean motor. Finally used a drift punch and a gentle tap with a BFH to seat it.

 

Thanks. Can't tell from the pic, but mine have brown plastic on them.

Cool, that'll be interesting.

LOL, I deserved that.

Sorry, I'm just still in that stage of bending down and looking under my truck every time I come out to it, and really liking that I see nothing there. How long does that take to wear off?

 

One of mine is missing the rubber surround that goes over the metal disengagement sleeve. Makes unhooking it a little more challenging. Plus, I have fished the metal sleeve out of the valley a couple times. I finally put a small o-ring around it to hold it on the hose and help it engage.


Thanks, good to know, I will be on the lookout for that. I just cleaned and re-sealed the fittings on the pump, but I haven't done anything to the fittings on the heads.