Hummer - On-board air pump

On Board Air Compressor

Well my Hummer does not have the CTIS (Central Tires Inflation System) installed and is too costly to add it for me (about $6,000 are the quotes I got), so I installed the next best thing, an on-board air compressor. In the same location that the air compressor is installed on the Hummer with the CTIS, I have installed mine and is of the same type. On both sides of the Hummer I have a quick dis-connect for the air hose, one being on the compressor, and the other I installed on the of the battery compartment that is just under the right passenger side seat.

Bad news, I had blown the hose right at the pump, the air coming out of the pump was too hot for the PVC hose that I was using (Some white stuff I got from the local hardware store that was for wcold water use). What caused it to get hot was it was pumping at about 150 PSI. Later, replaced the hose with some good black DOT approved brake line hose and added a safety pressure limit switch that shut down the compressor at 50 PSI. This was still not perfect, as the pressure got to 50 PSI, the pump would turn off and on with in seconds as the pressure only just dropped below 50 PSI. Later I made changes to fix that problem.

Wiring

The pump manufacture is Thomas Industries, Pneumotive Division, Monroe, LA 71203. Model TA-3051-DCX, Part # 980278. This was from a CTIS system of a Hummer, and was bought used, owner wanted a higher volume pump and for $50 I was in the market. This pump is a single piston pump, and they now have a higher rated pump out for higher volume. The pump is rated @ 1/4 HP, 1800 RPM, 12 VDC 22 amps, @ 50 PSI, cont. duty. @ 150 PSI, it will pull 27.5 amps.

Supplier: W.W. Grainger