P38A Leaky (stripped thread ) oil cooler -would PTFE tape help

[awkwardbob]

Hi,

just a quickie, my old girl is marking her territory again after a helpful garage did something to the brand new oil cooler I’d fitted (hose union but now won’t tighten -suspect thread is b*ggerrd).

I have another brand new cooler to fit but getting the time to do it is challenging. So I wondered whether PTFE tape might help seal the dodgy thread as a quick fix ? Or is there the potential for it to damage the hose union ?

Thanks again

Bob

 

[RangeRoller dt]

getting it back off without stripping it will be scary.

I had the same issue with my gearbox plug so i locktited it in. Now it wont come out at all.




Ever!

 

[Datatek]

PTFE will not help with a tripped thread

 

[Moron]

Hi,

just a quickie, my old girl is marking her territory again after a helpful garage did something to the brand new oil cooler I’d fitted (hose union but now won’t tighten -suspect thread is b*ggerrd).

I have another brand new cooler to fit but getting the time to do it is challenging. So I wondered whether PTFE tape might help seal the dodgy thread as a quick fix ? Or is there the potential for it to damage the hose union ?

Thanks again

Bob

I would attend to it ( replace the cooler and or the hose) as soon as possable........if the hose parts company with the cooler whilst driving, you may not notice untill major damage has been done

 

[tomcat59alan]

I would attend to it ( replace the cooler and or the hose) as soon as possable........if the hose parts company with the cooler whilst driving, you may not notice untill major damage has been done

+1 new hoses and cooler required, you'll find the thread's inside the hose connection.

 

[Henry_b]

Cooler and hose is cheaper than an engine..

I wouldn't risk it..

 

[awkwardbob]

Cool, well thanks for the advice.
I have a new replacement Cooler ready to go and only the two hoses to disconnect now (thank goodness the gearbox oil cooler I did at the same time is ok !)
it’s as easy for me just to replace it now and I’d rather not risk catastrophic engine damage !

Is it worth using some PTFE on the new threads ?
Thanks again

Bob

 

[brianp38dse]

Ptfe is not a good idea on the new one, but a bit of anti-seize grease should be ok
ptfe is meant to seal two threads, with the oil cooler connections the seal is the two surfaces that the nut pulls together, sealing the thread would not stop the oil coming out were the pipe goes through the nut, i see it all too many times on diy plumbing unfortunately

 

[awkwardbob]

Ptfe is not a good idea on the new one, but a bit of anti-seize grease should be ok
ptfe is meant to seal two threads, with the oil cooler connections the seal is the two surfaces that the nut pulls together, sealing the thread would not stop the oil coming out were the pipe goes through the nut, i see it all too many times on diy plumbing unfortunately

that makes total sense… the o-ring is the sealing point.

 

[Marshall8hp]

The hoses are O ring sealed. The pipe nuts are just nipped tight enough to seal the O ring. No ptfe required.

 

[awkwardbob]

Done....

and I think we may have found the issue <see piccie>

Both sides feel much better, no movement from hose, no cross-threading.

But was a bugger to get up due to knackered threads but got there. Took quite an effort to clean out all the swarf from the nut but it’s looking good.

Just need to keep an eye on drippage and oil consumption now !

 

[brianp38dse]

Done....

and I think we may have found the issue <see piccie>

Both sides feel much better, no movement from hose, no cross-threading.

But was a bugger to get up due to knackered threads but got there. Took quite an effort to clean out all the swarf from the nut but it’s looking good.

Just need to keep an eye on drippage and oil consumption now !

Looks about right for cooler pipes being removed

 

[tomcat59alan]

Done....

and I think we may have found the issue <see piccie>

Both sides feel much better, no movement from hose, no cross-threading.

But was a bugger to get up due to knackered threads but got there. Took quite an effort to clean out all the swarf from the nut but it’s looking good.

Just need to keep an eye on drippage and oil consumption now !

Bit late now but one of the bolts has a top hat washer to allow some movement when the cooler heats up, did you fit /find it?