Mark Piercy said:
Is there anything to lube the
o-rings, they are very resistant pushed in dry... Nod nod 🫣
Click to expand...
I have copper grease, or is silicon better?
Also, are the O rings supposed to fit snug in to the matrix? Right now the pipes slot in but they don't go in much and have little resistance
 
Not copper grease my mate and only if its silicon grease not sealer! 🤔, you don't have any other grease to wet the oring outer surface which will allow them to slide in while fitted on the pipe end?
 
blue_cheese said:
I pulled the pipes + clamp out to take the pic, that's why it's not sitting right.
Do the flanges on the pipes sit on top of the inlet surface? Or do they go further in?

Someone has been and butchered the threads in it too.
Made 10x harder by the fact that I don't have a magnetic screwdriver! Sod keeps falling off.

I'll try again in the morning, thanks for your advice
Click to expand...
Replace the screw with a socket head screw. There are recesses into which the O rings go.
 
blue_cheese said:
I have copper grease, or is silicon better?
Also, are the O rings supposed to fit snug in to the matrix? Right now the pipes slot in but they don't go in much and have little resistance
Click to expand...
Silicone grease not Coppaslip. The pipes do not go in far and I do not remember any resistance.
 
Back again.

Greased up the O rings but still no luck with the securing bracket.

Does the bracket slot in to place first before tightening? Right now it's loose and I'm having to push it up with my hands when trying to screw it on. I've pushed and riddled with it but cannot find an orientation where it tighents down properly:

20250710_202509.jpg
 
Quick update:

Managed to screw it down, but I'm not convinced it's right:

20250710_203649.jpg

See those two little teeth on the edge of the bracket? Top one doesn't seem to be making contact with the matrix, and the bottom one is on top of the inlet instead of reaching over it.

(This is compared to the pics on Paul's heater core replacement page)
 
As long as the collars on each pipe sit against the black plastic they are are home. The aluminum collar should be sat equally across the pipes in relation to the black plastic receiver 👍
 
blue_cheese said:
Quick update:

Managed to screw it down, but I'm not convinced it's right:

View attachment 345091

See those two little teeth on the edge of the bracket? Top one doesn't seem to be making contact with the matrix, and the bottom one is on top of the inlet instead of reaching over it.

(This is compared to the pics on Paul's heater core replacement page)
Click to expand...
Maybe loosen it and faf with it a little. The proof will be when you warm the engine and check your work👍
Are you sure the o-rings are correct for the application? 🤔
 
Mark Piercy said:
Maybe loosen it and faf with it a little. The proof will be when you warm the engine and check your work👍
Are you sure the o-rings are correct for the application? 🤔
Click to expand...
Ended up loosening it for now and leaving it for the evening. Wasn't happy with the way it was sitting.

I'm pretty sure the O rings are right, they're straight from the LR dealer, part number that was given previously in this thread.

Might replace the screw with something a bit more robust - anybody know what size fits? M5 x 20?
 
blue_cheese said:
Ended up loosening it for now and leaving it for the evening. Wasn't happy with the way it was sitting.

I'm pretty sure the O rings are right, they're straight from the LR dealer, part number that was given previously in this thread.

Might replace the screw with something a bit more robust - anybody know what size fits? M5 x 20?
Click to expand...
Just be careful the thread isn't stripped out of the aluminum bracket. A dab of thread locker or Loctite on the bolt and it should be OK 👍
 
All done.

Bought some M5 x 25mm bolts from Wickes this morning and it went in first time. Bracket lines up properly and all.
Shame it was a 50 pack - anybody need 49 spare bolts? 😆

Pressure tested to 15 psi for about 10 mins, and no leaks were seen. Pressure held too.
Started it up and let it idle for a while after topping up the coolant - no issues so far but I wouldn't be surprised if there's a bit of air in there that needs bleeding.

Only thing I've cocked up during reassembly is the glove box - it won't open - jammed on the right hand side (not on the latch).
But that's a problem for another day.
 
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