P38 Range Rover - EAS Compressor new thermal switch
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- Опубліковано 10 лют 2025
- EAS Compressor suddenly wouldn't turn on.
I jumped RL20 to make compressor run, and prove it still works. I go through the steps to replace thermal switch inside the compressor, (which has gone open circuit and must be replaced).
You could drill the holes bigger and place new rivets in but I just used a thin pilot hole and very small screws to hold the electronic board back in place.
For reinstall of casing:
I place strands of wire behind the brushes on the circuit board, to keep them open. I place compressor housing down onto the lid and pull these wires out once housing is almost all the way down. Footage of this at end of video is from just before I did the actual thermal switch job.
Source of 125c thermal Switches:
www.digikey.com...
au.mouser.com/...
Perfect timing, I need to redo mine too.
Hard to find a replacement chip in Australia
Yes it is hard to find indeed. Afriend linked me the part in Aus: www.digikey.com.au/en/products/detail/sesata-airpax/67l125/5082224. They are $21 each. I ordered mine from aliexpess, however. Got it for $13 including postage. Took 5 days.
Have a question... is it posible to remove the compressor with a pressurized system keeping the height still with air into the system? or will loose the air ? I guess with closed valves the pressurized air will keep the height... right ?
Yes height stays the same even when the small compressor from the EAS box is completely removed. It is closed as you thought. I found you can add air to the system through the Dryer top line, from a different compressor (belt drive etc) and shoot air into the tank and airbags with engine running, which can keep you up on highest setting and on the road even with no compressor in the EAS box at all.
where's the 'dryer top line' located?@@ESlashP
@@michaelfraser5723 Not sure what you mean. The air line to remove and shoot compressed air into, is on top of the Dryer. The Dryer is a cannister full of balls, which trap moisture so it doesnt enter the air tank. On RHD its next to the power steering resevoir.
So i need a 125c normally closed thermal switch?
What voltage?
What overload protection?
Yes normally closed. The switch will go open circuit at 125c (turns off the compressor to avoid overheating). It resets/closes again when down to 85c. AC is 120Volt. Some people are using slightly different ratings like 80-130 etc. But basically this will work.
What's that soldering iron used for🤔
Thanks for asking I shouldve mentioned. I also use that cheap iron to create a smoke machine. It screws onto a bottle with a rag in it soaked in baby oil. The iron heats the rag and smoke fills the bottle. I have a foot pump to force smoke out and place it in the throttle bodies to find vaccum leaks.
@@ESlashP great idea 👍
@@phillmcaverty the lid also acts as a safety device when you place iron on bench the lid keeps it off surfaces (i literally noticed from this video).
well done saved a few £ there