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Thanks you I checked all hoses and added a few hose clamps on ends I will know in a few days is there any check values that could be leaking back to tank

Hello I have a 1990 5ton. bmy and I keep losing the prime after parked a few days what could cause that if I top off the filters and pump hand primer crack injector line it will start any ideas

Hello thanks for pics i will try it ,did your truck leak air when dash switch engaged mine will not lock up front axle.The airline that goes forward goes where?

air is leaking from behind air cleaner pressure drops on gauge and axle will not lock up can i engage it manually somehow

hello i have a 1990 m923 and front axle will not lock up or engage i flip dashboard switch and i hear air leak any way to shift it manually

i have a 1990 m923a2 cargo truck fuel filter under fender next to air intake pipe will not drain when i open petcock any tips also if you know filter number

thanks i will try to find leak it leaks out pretty fast and air gauge goes down quick it almost sounds as if its leaking by or in the engine air breather tube when i put shifter into low range i think it works

hello guys how does the dashboard switch work for the front axle when i switch mine to engage i hear air leaking and I'm not sure if its working any when to test it

thanks i want to find out why it leaks air and from where also can you feel when axle is engaged without jacking up whole truck

hello all I'm new to military trucks but have been around mack dump trucks for 37 years owning 5 now driving and fixing my question is how do i engage the front axle when i flip the dashboard switch light comes on dash i hear air leaking and then light goes out what can be the problem...