Thread: New EAS Compessor Option

Description on job sheet says:

"Replaced Hitachi with AMK reprogrammed ride level controller tested"

So new software.

Notice any difference?

Yes conducted a small test this afternoon.

1) Normal to off road height, all four corners rose at the same time in about 5 secs
2) dropped it down to access height then up to off road height, It went straight up with no pauses or "pumping" in about 10 secs
3) repeated step 2 above immediately, this time the compressor was playing catch up with the usual staggered pumping action but still in reasonable time.

The ride height seemed a bit higher in off road height - will need to get proper measurements though to substantiate that. The times above are an estimation at this point as I didn't really think to take note at the time.

I'll do the test again recording times and height levels and post back.

Because the software upgrade is mandatory, it may simply be to cater for different calibrations of the temperature sensors.

OK just took some measurements so as not to rely on my guesses.

levels measured from centre of wheel hub to arch - my efforts are not very accurate (O = Off road N = Normal A = Access height):

Levels:
..| Front | Rear
O | 515mm | 535mm
N | 475mm | 490mm
A | 425mm | 445mm

Times:
A ==> N 4 Secs
N ==> O 6 Secs
O ==> A 11Secs
A ==> O 11Secs

In all above times I waited for compressor to finish running before next setting was selected.

Two A ==> O changes in a row with out waiting for compressor to refill
A ==> O 14 Secs on 2nd run

Compressor took about 2 Mins to refill the tank.

Lastly, there are no accessories on the vehicle, Half a tank of fuel was on board and no people inside.

Not sure how this compares to a new Hitachi - hope it provides some useful info.

Last December my MY11 D4 threw up fault C1A20-64 and persisted so into the dealer who reworked the compressor (Bulletin LTB00269 V5) dryer kit etc but same fault persisted - Bulletin LBT00420 indicated new compressor required and waited about 8 weeks for it to arrive - New compressor is ROLR037065 which a post on the UK forum indicates is an AMK unit as opposed to the original Hitachi.

Improvement in compressor performance was stunning compared to original unit - I had been complaining to the dealer and asking for suggestions this forum about the numerous wait and over temperature messages and general frustration re slow to raise and temperamental behaviour of the original unit.

the RLOR037065 has been in place since February and not a single error message since, consistently very fast to raise 3-5 secs, never over temperature, I can hear the new compressor running above engine idle noise which is new and I have been deliberately exercising the system to see what and when the errors would kick in and there have been none. my overall impression is that this unit is correctly matched to the task.

Fitted llams a few weeks ago and no issues - needless to say I am very happy but can't help wondering if was accidental good fortune rather than LR doing something about a very obvious weak compressor specification.

If you can call an earthquake and tsunami 'good fortune'

My old-style compressor works fine but how can I get a new one before end of warranty?