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Denis in MI

Puppy Poster
  • Content Count

    5
  • Joined

  • Last visited

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8 Good

About Denis in MI

  • Rank
    Engine Started

Profile Information

  • Location
    Norvell, MI
  • Interests
    Antique Tractors, Trucks, Cars and Equipment

Previous Fields

  • Make
    Mack
  • Model
    R-685ST
  • Year
    1979

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  1. Denis in MI

    New R model owner

    Does anyone know for sure if this would be the correct service manual? https://www.ebay.com/itm/381721155423 thanks, Denis
  2. Denis in MI

    New R model owner

    The previous owner is a good friend of mine and like I said just wanted the truck saved. The truck was used for hauling concrete forms with a flatbed trailer and knuckle boom crane. Since my friend purchased it in the 80s the truck never saw the road in the winter. It is in remarkably good condition as far as rust and the odometer shows around 220,000 miles. The engine is a turbo charged 6 cylinder, it has a 5 speed main box and a auxiliary that has low-high-reverse. It has a Mack engine with three oil filters, does that mean it should take almost 13 gallons to change the engine oil? I'll include a picture of the engine tag maybe you guys can tell me what I have.
  3. Denis in MI

    New R model owner

    Going to try and share a few pictures.
  4. Hello, I'll give a little back story first to explain how I became the owner of this truck. A good friend of mine recently came to the conclusion that he was never going to get around to restoring his old Mack R685 semi tractor that he once used for his business. Not wanting the truck to go to the scrap yard or for parts he contacted me and gave me the truck. I was reluctant at first because it had sat outside since he stopped using it in 2004. Unbelieveably all it took was a few new batteries and the truck started right up and was able to drive itself up onto a trailer. From what I can figure out the truck is a R685ST. The engine gives its model as a ETZ-675. I'm trying to find some info on the truck and engine but I haven't been able to come up with much. Is there a good service manual available for this truck? Only thing I really need to figure out right now is the fluid types and capacities but I want to get a manual for future repairs and service. I hope to put this truck to work on my farm and hauling some antique farm tractors around. Having a semi tractor is going to be a big step up from pick ups and my old 2 ton grain trucks. thanks in advance for any advice and help.

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