Thread: Pressure does not decrease when venting gallery

The disco fart is the system venting stored pressure out thru the filter to dry the moisture it has captured so a desiccant/filter replacement would be my first step.

so decided to take the cover off the air susp compressor to see what brand compressor i have and checked against ebay lookalikes and it seems its a hitachi air suspension compressor, so just went ahead and ordered a brand new replacement instead of mucking around with filters. to take the bottom cover off is easy 3 bolts and all is revealed. now just have to wait for the replacement from Melb to arrive and then fit. Seems like a pretty easy job to do at home in the driveway from what I have seen on youtube. should only take 1-2hrs to replace. lets see... i will probably keep the old compressor as a spare for now...

Should have just bought a rebuild kit, 2hr job tops.

Originally Posted by shamirj

so just went ahead and ordered a brand new replacement instead of mucking around with filters.

Not wanting to rain on your parade buy I hope you bought a genuine Hitachi (rare now and expensive - should have cost around $800-$1000) - if you bought a knockoff "Hitachi type" you will be replacing it again soon. You should have just bought a rebuild kit for the one you have - easy to do.

Should have discussed in the thread just a bit more before making the jump.

Garry

rebuild the original hitachi in your own time and either on-sell it or keep it as a spare for when your hitachi-type fails. I'd offer to buy it and rebuild it but I have the AMK compressor and the mount looks completely different, it's sadly not a simple swap.

Change out the desiccant and filter pads. The system pulls air from inside the rear pass side compartment behind the cover where you would find your tow bar and rear aircon. It exhausts through a pipe into a big black round plastic "container/muffler" under the car above the rear axle. I suspect during periods of damp and high humidity the powdered desiccant (and the filters get rusty) really clogs up at that end of the canister where this exhaust pipe connects. (The humidity comes into the system backwards passively when car sits) That was my experience. $40 bucks and about an hour and a half to re-kit desiccant and filters. And slot the top compressor bracket hole so it slips onto the bolt when refitting to the car!😀
Matti
This C1A13 code is becoming more and more prevalent and Hitachi compressor owners have begun to discover the system more and realise how simple the repairs are... or you can drop a thousand bucks on a new compressor- a smart cookie on this forum with time on their hands should set up a refurbished compressor market with core replacement for members.

Originally Posted by matti4556

Change out the desiccant and filter pads. The system pulls air from inside the rear pass side compartment behind the cover where you would find your tow bar and rear aircon. It exhausts through a pipe into a big black round plastic "container/muffler" under the car above the rear axle. I suspect during periods of damp and high humidity the powdered desiccant (and the filters get rusty) really clogs up at that end of the canister where this exhaust pipe connects. (The humidity comes into the system backwards passively when car sits) That was my experience. $40 bucks and about an hour and a half to re-kit desiccant and filters. And slot the top compressor bracket hole so it slips onto the bolt when refitting to the car!
Matti
This C1A13 code is becoming more and more prevalent and Hitachi compressor owners have begun to discover the system more and realise how simple the repairs are... or you can drop a thousand bucks on a new compressor- a smart cookie on this forum with time on their hands should set up a refurbished compressor market with core replacement for members.

I have been thinking about doing refurbs on a change over basis.

well i changed over the air susp compressor today in the rain but was in the garage so not too bad a job to do really. So cleared all faults and went for a spin and guess what the error message came back on. so now the 'venting gallery' message has gone so maybe the new compressor fixed that problem but another older message of 'rear right height sensor' seems to keep coming back up. so will look to replace this as well though it had been changed over 12mths ago so not sure why this is coming up again. do they need to be calibrated once a new sensor fitted? thanks