ARB twin air compressor repair (including troubleshooting)

Apologies for the flickering. Turns out the GoPros at 60fps catch some flickering from the Milwaukee LED Rocket tower.

This 15 year old ARB CKMAT12 dual air compressor that came with our Jeep CJ was wounded, with only one of the two pumps working reliably. After doing some troubleshooting & digging, it was determined that one pump needed a rebuild.

The ARB compressor piston barrel service kit (part number 320303) was required & ordered. This kit replaces the obsolete 320302 kit which only included one of the two bolt sizes. The updated kit includes both the M5 and M6 hardware to repair both newer and older ARB air compressors (built before or after August 2017). The M5 x 20mm bolts are torqued to 10Nm (7.4ft-lb or 89 in-lb), and the M6 x 25mm bolts are torqued to 12Nm (8.9ft-lb or 107in-lb).

The majority of the steps in this video will work for the CKMAT24, as well as the single unit CKMA12 & CKMA24.

00:00 Introduction
00:49 Testing & Troubleshooting
04:00 Burnt Fuse
05:15 Investigation
08:34 Disassembly
13:00 New parts
16:43 Reassembly
22:20 Installation & Testing