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Maybe you guys can help me, i feel as if my engine is missing... maybe, im not a diesel guy at all but the 673endt in my m39 lopes pretty hard and smoothes out but even then it sounds and feels like its missing especially while driving, do these engines run that way, i think it should be...

I have a 1970 mack powered m39 series truck. Im trying to find an air line diagram for the truck, im lost and someone hacked this thing out. Also need to know if this truck has a clutch brake and how to replace it... hard to put in gear and tries to pull when it does go in gear. Any help would...

After two years!!! It's drivable... well i drove 35 miles with no brakes lol!!! Anyone have a digram of air lines for this beast, all airlines are trash! Even the transfer case needs plumbed and im lost!

Been a while since ive posted, had major surgery and just now getting back to working on the war pig!! Almost finished with fabing up pass side rear fenders and steps!! Cant stand the standard... trailer bed everyone uses... i prefer a bed that is correctly proportioned to the cab and i hate...

Ill take pics and contact u ty

Thank you!!

Im having problems finding tie rod ends for drag link for M54,, i need some sort of schematic for air system that controls brakes and transfer case ( im lost on how it all functions and how it is activated)

Have driven much just across town when i bought it

sorry for The doubles!!??

Well dont hate me lol but this is a bobbed truck now and im not finished because im building so many others for customers but its coming alongYep

What Engine ( bellhousings) will bolt up to my mack powered m54, i want either bigger engine or more gears to better use the power i have. So what engines will bolt up to my trans or trans to my motor. Any help would be appreciated

North eastern ky, ashland

Ty

Would love to get help identifying this truck , its life started as a mack endt 673 powered dump truck other than that im kinda lost. Plan on bobbing the truck utilizing a triagulated 4 link and air bags. It will have 939 super singles and 14x20 tires! Im excited to learn more about the truck...