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Attach Supplied Check Valve

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Attach the supplied check valve and male air fitting onto the output port on the compressor’s head. Don’t over tighten the check valve (use approximately 25 lb-ft at most). The compressor is oil-less, which means that it can be mounted almost anywhere and in any direction. However, it needs to be relatively near the ECU, in a position that it’s wiring harness can reach the battery and fuse box of the truck and in a place that gets plenty of cool air but is free from potential damage.