EHC Air Pump Repair Kit Installed/Review(Amazon)

[crystalworks]

Installed this over the previous weekend: WABCO Compressor Rebuild Kit.



Install was easy, if a little fiddly. Lowered the truck to the bottom and pulled the associated fuses before removing pump. Very little air (if any) escaped the system when I disconnected the compressor air line. I managed to spill the OE dryer beads which was fun to clean. Only spilled 10% of them and it still took a good half hour to find them all (all the ones I could find anyway). I did this as a preventative measure since I am slowly working on my audio system and access to the pump is easier now than it will be later.









I was not having any EHC errors or other troubles besides sagging if the vehicle sat (long time... month). Figured for ~$36 it was cheap PM and my pump could probably use a refresh. Cylinder bore looked okay and the old piston ring did not appear too bad either, though there was some wear obviously. Fitted everything and had the pump back in the truck within a couple of hours. I did not disconnect the battery or anything while servicing. Upon reinstalling the pump and putting the fuses back in, turning the truck on, and engaging the system I thought something was wrong. Before I could distinctly hear the pump engaging but now it is almost dead silent with the rear cover on. I was not getting any errors on the dash or foxwell so I put it into the highest position and picked a horizon landmark for the hood and could see the truck go up... fast. So, everything is working great. Quieter and possibly faster than before the service. So this kit gets a from me. Just thought I would share with you all in case someone else was interested.

[PropellerHead]

Originally Posted by crystalworks

Just thought I would share with you all in case someone else was interested.

Your timing is amazing! I was just about to install this into my OE pump after replacing it last week with a 'refurbished' eBay unit. I don't really *know* if the eBay unit has had the work done, so I figured I would do the OE unit and have it ready. Especially now that I have *2* 2 axle air suspensions.

[ajacks8]

I rebuilt mine last week, as well. However, I never came across the kit you referenced on Amazon. I had kept seeing reference to bagpipingAndy's repair kit and website...that's the one I used. It did not come with those dryer beads or circular pads. How were these utilized as part of rebuild? Anyway, I still needed to get that light reset. Clearing THAT was my first success using INPA for something, but was disappointed to learn that my version shows in German language. Glad you got it sorted.

[crystalworks]

Originally Posted by ajacks8

I rebuilt mine last week, as well. However, I never came across the kit you referenced on Amazon. I had kept seeing reference to bagpipingAndy's repair kit and website...that's the one I used. It did not come with those dryer beads or circular pads. How were these utilized as part of rebuild? Anyway, I still needed to get that light reset. Clearing THAT was my first success using INPA for something, but was disappointed to learn that my version shows in German language. Glad you got it sorted.

The beads go inside the dryer (the black plastic tube attached to the cylinder head). One felt pad on bottom and the other on top to contain the beads. There is a metal screen in there as well that can be reused as it does not wear.

I did not have any errors prior so did not have to clear (or calibrate) anything. Still need to get INPA running on something though as Carly and the Foxwell have their limitations.

[SlickGT1]

Cool. I may do mine now as well. 105k miles. And I slam the truck every time i park it for the kids and raise it max every day to go over a particular nasty ramp at the warehouse.