PLEASE!
For your wallets sake don't buy DUNLOP!!!
Believe it or not Dunlop isn't the OE supplier for EAS compressors the original P38 compressor is a slightly modified version of the thomas 315 compressor.
After some investigation into mine It appeared that Dunlop in their wisdom used brass for the flywheel/weight on the compressor conrod.
Mine rattled like a bastard and the piston ring fell apart + it seemed to rattle apart
I think I've worked out what caused the failure on mine IMO it was a loose grub screw which caused the motor to spin, catch it, get off balance etc. Or whether it happened from the other side. The armature has a couple of big lumps of resin on it which I've never seem in an OEM one before whether it was to try and balance it from the factory who knows - but if it's actually caused it to run off balance, then it will have work the front bearing which there is some play in and the possibly vibrated the grub screw loose, and gouged out the brass conrod which explained the swarf and the noise prior to failure!
Here are some pics of my "new" compressor.
And the same compressor 3 weeks later.
The armature was also scraping against the magnets in the body of the motor.
It was a right mess.
I sent it back to Rimmers and got a refund that was a £200 mistake!
To get the EAS working properly I replaced it with a rebuilt unit from a chap on ebay "Original Landy Air" a top chap who supplied a fully rebuilt compressor for around £88 IIRC
Another little thing often missed is the orientation of the washers the compressor sits on..
From factory the P38 had Concave washers, these are often lost/misplaced or more often than not put in upside down!
This caused the Compressor to vibrate and it becomes audible from inside the cab, which in turn triggers "EAS paranoia" which i'm convinced is come kind of mental condition!
My washers were flat, a good smack with a ball pean fixed that..
The right orientation is...
Top washer goes CONCAVE SIDE UP
Bottom washer goes CONCAVE SIDE DOWN
What is also important is the 8mm nuts that secure the compressor only need to be just above hand tight, too tight end it'll make a noise...
Yes i'm sad...
LOL