1974 Ford 6000 dump truck airbrake and steering box question

samedi 2 avril 2016

#1
I am not to familiar with air brakes, i found a leak from the compressor line where would one obtain parts to fix?
i can hear the air escaping. is there a psi reading that the truck should build to within a certain amount of time?

https://www.youtube.com/watch?v=iRhtTd2kmkA


#2

My question is
i can see the worm gear coming up and down with rotation of steering . I have never saw this in the automotive field before. is there a fix ? or box replacement. i was also looking on internet , if box replacement is required will i have to retest poppet?
i found casting number on box HF642990 ford# of D1HA 3N503 ?
https://www.youtube.com/watch?v=mPgciEPZBV0


1974 Ford 6000 dump truck airbrake and steering box question

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