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6.2 oil cooler lines

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cwillis

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So my oil cooler lines blew. . .

Well just the top one (on driver side) but i want to replace both.

Anyone know what type of fittings those are and how long of a hose i need?

What kind did you use? the 40-50 psi MAX is sort of middle ground area.


thanks
Chris
 
You want to buy hydraulic hoses at a minimum. The heat plus pressure will kill a radiator hose in no time flat. However you can just take the old one into any place that makes hydraulic hoses and they can make them. Napa also carries them new.
 
Go with the hydraulic shop. That's what most recommend.

KennyW is Wise and Speaks Truth grasshopper.;)
 
when i search on napa i cant get it to come up for my vehicle.

those fit the 6.2? hmm tough. i'll have to call the hydraulics places and get a quote. which would be cheaper?
 
I've been replacing all my OEM hoses w/ generic hydraulic hoses in standard lengths and fittings. I buy whatever adapter is needed, now almost all my lines use the same fittings. Means I can carry a couple caps, and block off pretty much any line I need to. I also carry a 12" hose with the same fittings, and adapters, so that I can bypass a loop at either end (ie, 12" hose at the tranny, or 12" hose at the tranny cooler). gives me options in case one side is inaccessible for whatever reason.

I've actually gone to o-ring face seal lines, but only because I was able to get them for a fraction of the cost of other lines. Doing it over again, I would adapt everything to npt, and have ALL my soft lines be pipe thread.
 
i had some made up at the caterpillar dealer/service center - not too bad on price... don't remember the cost tho.
 
I'm going to have some new oil cooler lines made up at my work (CAT Dealer), but I'm going to swap to O-ring face seal fittings, but the fittings on your truck are inverted flare fittings and a -6 or -8 i believe, i think -8 (1/2" id). We have that style of fittings in our hose parts catalogs for one wire braid hose (716 model hose). Go to an equipment CAT shop, not a truck shop to get hoses made.

-Martin

PS- Don't forget, if you can't incorporate a straight fitting into a hose, and both have to be angled fittings, don't forget to make sure they are clocked correctly! Wouldn't want to waste hose, fittings, and assembly charges....
 
I never knew. I had the old damaged lines with me, dropped them off at Caterpillar and asked for some hoses to be made up with the same types of fittings, made to a certain length. They're rubber lines for the whole length - no hard lines. They're actually quite a bit too long, which is a bit irritating. I need to find a decent way to route them.
 
I'm going to have to replace my oil cooler hoses soon on my '82 K2500 6.2....

I have a 6.2 a friend gave me that has a busted crankshaft,when I removed the fittings in the block that the oil cooler hoses screw onto,they both had 3/8" NPT pipe threads,thats what the block was tapped for..(1987 engine!)..the fittings looked to be for a special O ring or flare fitting..

My oil cooler lines go from rubber to metal and back to rubber--they start as metal at the block fittings/adapters,and then turn to steel,where they go behind the radiator and into the cooler.which is on the passenger side,a stupid place in my opinion,same with the tranny cooler,thats on the "wrong" side (drivers side) ,forcing you to need lines much longer and hard to route..

I have not been able to get a straight answer about using pipe plugs to simply blocvk off the cooler lines in an emergency ,should one fail on the road..from what I gather,there is a by-pass valve in the block so the engine wont starve for oil should the cooler become clogged or a line restricted,but I suppose that will reduce flow to the bearings,etc..looking in a GM service manual,it shows the oil flow going from the pump goes directly to the cooler FIRST,then onto to engine and bearings,etc..
One guy said he has "removed" the oil coolers from several 6.2's in his fleet of work trucks after the lines failed,by using a "loop" of high pressure hose on both oil cooler fittings,and said he's never had any issues runing them without a cooler..his trucks carry heavy loads of cranberries often too..
After seeing how dinky the stock oil cooler in the radiator is when I chopped one out to scrap the radiator,I suppose just going with an aftermarket external cooler would be cheaper than replacing the stock lines and would probably cool better too..
 
I plugged off the holes at the block w/ npt plugs and drove it for a while. Didn't seem to effect anything. I can't remember the source, but I'd read somewhere credible that it wouldn't starve the engine for oil.

I don't know if that is true of newer engines mine was a 1984.
 
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