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The damage extends into the oring seat area for the liner in the block. i would have to get block welded and machined to keep coolant out of the pan. crank is questionable valve train is unknown but the top half of the piston got hammered flush with the head when it came apart. I was thinking...

I need some help locating a nhc250 or a suitable replacement Big cam for a M939A1. Has someone documented the exact changes needed for a big cam? I have read through several of the threads here, but might have missed something. I am located in Missouri but can travel for the right motor Long...

Depends on the price and shipping cost Ive got a m54a1 with no engine but the trucks in good shape Sent from my SM-G930R4 using Tapatalk

Mission success. Relocated the m931a1 and twin m105 trailers to NE Missouri Sent from my SM-G930R4 using Tapatalk

No joke there . 50mph and the truck is shaking apart. On the road again Sent from my SM-G930R4 using Tapatalk

Well guys weather delayed me a day I'm currently heading back on Sunday night 10 p.m. I'm in Little Rock Arkansas truck is behaving except for the for poor pavement down here. Sent from my SM-G930R4 using Tapatalk

thanks guys for all of the "gotcha's and head scratchers" you have come across. What is the best way to find members along my route back? @Mullaney @simp5782 @Karl kostman @Recovry4x4

It is lining up to be this weekend with arriving Friday afternoon and driving back evening and sat. what is the best way to find members along the route?

Northwest almost in Texas and Arkansas. i plan on checking all fluids and regreasing driveline for the long haul home. ill have a IR gun for keeping an eye on temps as well.

it has the spare on the truck and 3 additional mounted tires going with it. i do need to pick up the glad hand coupler though.

was it locked from sitting, or did it lock up going down the road?

@Bill Nutting this will be the first one in running and driving shape. i picked up a nonrunning m54a1 last fall and have yet to get the mack going. i also picked a running m52a2 but its a basketcase outside of the rebuilt multifuel.

I am looking to bring home a M931A1 next weekend. The truck is a low hour machine out of Louisiana and home is in Missouri. that puts the drive right at 700 miles. Any advice for the recovery other than the basic filters, fluid, standard tools, jack and wheel chocks i should bring with me? its...

In! Sent from my SM-G930R4 using Tapatalk

IN Sent from my SM-G930R4 using Tapatalk

Well I bought the truck still not running. Long story it is not the fuel but a bad valve train. Bend pushrods and valves missing retainers . Time to start finding parts I guess.

Awesome info. If i recall endts were installed 1966-68 and could very well be original if the vin comes back as a 68 . Im heading down inspect truck and to do the paper work now, anything else i should look for or try to get it to fire up.

Ill look at frame today when i look at truck @Recovry4x4 dash plate and depot plate attached it does say m54a1w in upper right as well.

Thanks all for warm welcome. @Recovry4x4 you could very well be right. after i looked closer to the photos. ill measure the wheelbase when i look at truck next. one of the quirks this truck has is the id plate on the dash and the depot refit plate have been stamped m725 but the title matches and...

Well here it is... non running mack engine and missing a few of the parts that make it a m52. I'm looking at you dual fuel tanks, tool rack / spare tire, military fifth wheel and risers. Truck is clean as far as rust though and just 10 secs of cranking builds air and 30+psi of oil pressure. It...