Hpx Leak !!
Thread Starter
|
Senior User
Joined: Dec 2005
Posts: 191
Likes: 0
From: Woodbine,MD
Hpx Leak !!
Installed the hpx about 3 weeks ago and noticed oil leak from back of motor in 2 weeks. It got to the point where it would drop about a half of pint of oil every time I parked. Originally I thought I had a o-ring in the pedistal going bad but after I climbed up in the motor and looked around I found that it was coming from the HPX connection. Removed it and inspected the o-ring on the side that was leaking and found that it was all chewed up , so I looked at the other one and it was almost as bad. I went back and got the plugs out of my glove box and they seemed to be a better quality o-ring so I changed them out and so far so good. Anyone had this problem or any idea why ? The thread area is clean and smooth . Do they make a high temp thread sealant / lock just to add to be on the safe side ? Thanks
Senior User
Joined: Jun 2005
Posts: 157
Likes: 0
The original plugs use a O-ring boss fitting which is a straight thread with a groove machined next to the head for a o ring to seat. Maybe yours were damaged during original install or possibily inferior o-rings that couldn't stand up to the heat. The ones you installed from your original plugs should be ok.
You should get some replacement o-rings for your original plugs and carry them with you just in case
You should get some replacement o-rings for your original plugs and carry them with you just in case
Last edited by Betthebux; Mar 27, 2006 at 09:33 PM.
Thread Starter
|
Senior User
Joined: Dec 2005
Posts: 191
Likes: 0
From: Woodbine,MD
Stroken I have the stainless steel one and it has an embossed area for o-rings , it also came with them . Not sure what to do or if the o-rings of my other plugs will do the trick.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
You have to be extremely careful not to tear the o-rings when installing those fittings. You can't just "run them in". What I do is lube the o-rings and where they go with a thin coating of something very slippery like faucet lube. Then begin by installing the fitting and running it in until the o-ring starts to get squeezed. DO NOT force it in! Back it out 1/4 turn. Go back in 1/2 turn. Feel for that "binding" feeling and avoid it at all costs. Back out 1/4 turn. Back in 1/2 turn. Repeat as neccessary until the fitting is tight. And also remember that the o-ring is what does the sealing, not the tightness of the fitting. So don't crank it down tight enough to hold your tires on! That will distort the fitting and make a leak.
Hope this helps.
Hope this helps.
Senior User
Joined: Feb 2003
Posts: 207
Likes: 0
I had the same issue. But mine came from overtightening. I don't remember the exact words, but it seemed like you tightened a half turn past finger tight, or something to that effect. But apparently I didn't believe them.
I have mine off for now. I may go back with one of the stainless steel lines in the future.
I have mine off for now. I may go back with one of the stainless steel lines in the future.
Trending Topics
Post Fiend
Joined: Jul 2005
Posts: 14,582
Likes: 12
From: 21791
Originally Posted by Kwikkordead
And also remember that the o-ring is what does the sealing, not the tightness of the fitting. So don't crank it down tight enough to hold your tires on! That will distort the fitting and make a leak.
Hope this helps.
Hope this helps.
on edit- or does the threads stop most of the oil pressure, just the seal keeps all the oil contained??
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Senior User
Joined: Jun 2005
Posts: 157
Likes: 0
http://www.kurthydraulics.com/thread...97f1cb9dddc346
Some interesting info on different types of fittings.
Some interesting info on different types of fittings.
Logistics Pro
Joined: Mar 2004
Posts: 4,221
Likes: 3
Here are the install instructions from ITP just for future reference for this thread:
http://www.itpdiesel.com/other/KCM/S...structions.pdf
I ordered the stainless HPX line a couple days ago, by the way... will try to get it in this weekend.
http://www.itpdiesel.com/other/KCM/S...structions.pdf
I ordered the stainless HPX line a couple days ago, by the way... will try to get it in this weekend.
Senior User
Joined: Dec 2000
Posts: 435
Likes: 0
From: Nebraska Farm
Does anyone know what the thread size is for the adapter fitting? In my past job I designed a lot of hydraulic systems, o-rings can handle a lot more than 3000 psi. Most are made for at least double that. Anyway, I took mine out last night and its bigger than an SAE #4 and smaller than an SAE #6. They do make a #5, but not very common. Would they happen to be metric? I didn't think of measuring the threads to back into it through the fitting catalog I still have. Thanks, Dave
Posting Guru
Joined: Dec 2004
Posts: 1,248
Likes: 0
Thread lock sealant is generallly used on pipe threads - not on O-ring fittings. I wouldn't use it on the HPX fittings. The O-rings works perfectly - mine has been in for almost 18 months, no problems. As Kwik said, you just have to be extra careful during installation.