Oil Cooler Line

[dottieshusband]

Hi Paul,

Are you going to replace all four (i think) hoses? Every time I view my engines and gears I look at these old hoses. The physically most difficult to replace would be the gearbox sump hose, which will require the oil to be drained.

Just replacing the leaking hose. I don't have a sump hose, and use a dipstick draw to change oil... 6+ gallons.

[rsmith]

Let me try to assist.....

If I'm correct it's HOLD-C, TURN-B

B will swivel in A

If not, the pic will let someone set me straight.

Technically you should hold A so the hose doesn’t twist and the flare isn’t scored. According to Parker most leaks are caused by improper tightening of the fittings. The flares should be drawn together with no turning or twisting as it’s drawn up which would cause scores on the mating flares.

[oscarvan]

Technically you should hold A so the hose doesn’t twist and the flare isn’t scored. According to Parker most leaks are caused by improper tightening of the fittings. The flares should be drawn together with no turning or twisting as it’s drawn up which would cause scores on the mating flares.

OK, I can buy that. If you hold A and turn B (Can't turn C) you indeed will keep the hose from twisting.

But the flare WILL be moving against its seat (A and B will be rotating in relation to each other, don't see any other way to do it as you certainly aren't turning C) ...... So I'm not understanding the "flare isn't scored" part....

[Boatsb]

A is the male fitting, B is the female. They need to be unthreaded from each other. B should turn freely at the joint with C. C may need to be held to get the rotation from the hose. Paint and rust can lock that joint up.

[racclarkson@gmail.com]

That big stuff can take more than enough torque to un-score itself. Never had one fail over decades of farm, hvy equipment or boat hose changes.

[oscarvan]

That big stuff can take more than enough torque to un-score itself. Never had one fail over decades of farm, hvy equipment or boat hose changes.

Don't disagree with that, my results are the same... but always willing to learn more background. Aside from that, this is not a high pressure application like a hydraulic system.

[Dazed338]

Technically you should hold A so the hose doesn’t twist and the flare isn’t scored. According to Parker most leaks are caused by improper tightening of the fittings. The flares should be drawn together with no turning or twisting as it’s drawn up which would cause scores on the mating flares.

Paint might be what holds it, Add to the Hold A, loosen B, you might have to hold C if it wants to turn. Think old GM fuel filters at the carb, more often then not the filter turns 1st, twisting a steel line. Like others said once broken loose should be able to finish by hand.

[rsmith]

OK, I can buy that. If you hold A and turn B (Can't turn C) you indeed will keep the hose from twisting.

But the flare WILL be moving against its seat (A and B will be rotating in relation to each other, don't see any other way to do it as you certainly aren't turning C) ...... So I'm not understanding the "flare isn't scored" part....

A and C are the mating surfaces that make the seal C is just the nut that puts pressure on the flares.

[oscarvan]

A and C are the mating surfaces that make the seal C is just the nut that puts pressure on the flares.

Doh! I knew that. Always weird talking about it on line versus having it in your hands. Thanks for clearing that up.