P38 AC o ring issue

Blobthebuilder · Jul 2, 2020

I've been trying to get car gassed but now using a machine it has a few leaks 1 being behind dash and going by location of evaporator I wondered if anyone has managed to remove dash mat and were did is has anyone made like an access panel in there and if so can you get to evap o rings??

RangeRoller dt · Jul 3, 2020

LR cut a hole behind drivers side centre-console-side-panel to gain access for heater matrix rather than take dash out. If access is similar you could do same or maybe already got one?

romanrob · Jul 3, 2020

No future in going through the top, there's a duct right under. So the leak behind the dash is refrigerant, or coolant?

wammers · Jul 3, 2020

The only O'ring connection to the evaporator is the expansion valve and that can be removed to replace O'rings from under the hood or bonnet whichever takes your fancy.

Blobthebuilder · Jul 3, 2020

I see the system I was also wondering my txv valve has a plastic cover on right with like foam in it, is that correct, valve seems to move freely but should it be filled with like foan?

wammers · Jul 3, 2020

Blobthebuilder said:
I see the system I was also wondering my txv valve has a plastic cover on right with like foam in it, is that correct, valve seems to move freely but should it be filled with like foan?

Without going to look can't remember that on mine. There is a clamp holding HP and LP pipes to expansion valve that needs to be removed, then two screws to remove expansion valve. There are O'rings on pipes and O'rings expansion valve to evaporator. They are the only things that can leak unless of course the evaporator has failed. If you need to remove the evaporator you will have to remove dash and heater unit. Evaporator cannot be removed with heater in situ. .

Grrrrrr · Jul 4, 2020

If the TXV is acting up then it may vent to atmosphere

wammers · Jul 5, 2020

Grrrrrr said:
If the TXV is acting up then it may vent to atmosphere

By acting up i take it you mean knackered.

P38 AC o ring issue

Blobthebuilder

Active Member

RangeRoller dt

Well-Sprung Member

romanrob

Well-Known Member

wammers

No longer with us, RIP

Blobthebuilder

Active Member

wammers

No longer with us, RIP

Grrrrrr

Technician, Bodgit & Scarper Ltd

wammers

No longer with us, RIP

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