Search results

Yeah some testing would help. I'm not saying that it won't work fine at lower pressures. I just know 120 psi is there on the M939s and I don't know what it'll do at lower pressures. Obviously, pressures fluctuate on the truck when the air brakes are used, so I'm sure you could safely drop at...

See my edit in the previous post. Design the lock into your cab shifter to keep everything simple.

That will work fine too. The main thing is that it can vent the supply line which that one will do. I'd say you need to aim for 120 psi. The return spring for the engagement rod is very stiff. I can't fully depress it by hand. This spring is what the cylinder has to depress to engage the front...

The high/low lock cylinder or shift lock cylinder only locks the selector shaft in place so the shifter can't be knocked out of gear. The selector shaft has detents too, which hold well enough, so it's really not needed. High and Low are still shifted manually. The front output shaft can only be...

The air also operates the shift lock cylinder on top of the case. Definitely not needed here, and in my opinion, not needed on anything but the M936s in stock configuration. I plugged the one on my truck last year and have enjoyed silky smooth shifts ever since. Really just personal preference...

You need 1 air supply line going to the transfer case and a dash valve like in the M939 trucks. The rest of that stuff is not needed. The square cylinder behind the parking brake drum, in the picture below, engages the front output shaft. It is air engaged and spring release. You'll run a...

Are you installing this case in a M939 series truck or something else? I ask because some of the air operated stuff will not be needed if going in a custom rig. The exploded diagrams can be found in TM 9-2320-272-24P-1 starting on actual page 208-1. The air diagrams are best veiwed in the P2P...