Restarting CAT 3406B Sitting for a year

Discussion in 'Trucks [ Eighteen Wheelers ]' started by sarrattseptic, Nov 29, 2021.

  1. sarrattseptic

    sarrattseptic Bobtail Member

    I am moving my truck to another mechanic. It has been sitting for a year. It has a CAT 3406B. It is a 1981 truck.

    The truck was running and driving when it was parked.

    The truck is new to me.

    Do I need to do anything to the fuel? Polish it (clean it)?

    I am not sure when the fuel filters were last changed.

    Anything else I should watch out for? The batteries are charged.

    The truck is being moved to another mechanic 3 miles down the road who has more time to work on it. I need to have the transmission removed.
    Last edited: Nov 29, 2021
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  3. Lazer

    Lazer Heavy Load Member

    Jan 22, 2017
    Only 1 yr? Check the fuel for water, also check all fluids. Start it up, give a bit extra time at idle, drive on down the road to your new mechanic. What is the issue with the transmission?
  4. sarrattseptic

    sarrattseptic Bobtail Member

    1) Thanks for the information on water in the fuel. My hunch is I should buy some of that paste that you put on a stick and dip it in the fuel?

    2) Now that you mention it, it has sat more like two years. I bought it in June of 2020. And, it was sitting for 6 months (?) before I bought it.

    We drove it down the road from the PO one mile to load it onto the hauling truck. No problems during the drive.

    Then my mechanic drove it into his driveway and there it has sat.

    My mechanic then got too busy to do heavy equipment work--he is a regular automobile mechanic, and so I am moving it to another guy to pull the tranny.

    3) The transmission started going out on the PO and so they parked it. It is popping out of 7th gear (the highest).

    They could not find parts to repair the transmission and so they listed it for $5000 on CL.

    I spoke with my transmission mechanic before buying and he said he was familiar with the Spicer 7-speed. He said he was pretty sure he could get parts for the transmission.

    My transmission guy said $1000 to fix 7th gear or $2000 just to rebuild the whole thing.

    I bought the truck for $1500.
  5. lester

    lester Road Train Member

    Jan 2, 2012
    NW, Iowa
    Just start it up and drive it. It's a few miles you said? If it does have some water in the fuel worst case change filters. If its grown some algae again you might need to change filters.

    Depending what part of the world you live in the brakes could very well be stuck to the drums, rust, a heavy hammer will cure that.

    I live in a part of the country with 100+ degree temperature swings and have run equipment that sat for many years with minimal problems

    OLDSKOOLERnWV Captain Redbeard

    Nov 29, 2011
    West Virginia
    BD822E5B-41EB-4FB4-9454-38D80DE5DDD5.jpeg D25B11A2-721C-49DA-A394-5397783F1D01.jpeg 70151F64-E019-4ECB-B6C0-909F4BBFE261.jpeg Don’t know a lot about Cat’s myself…. But I was hired to haul this Cat dump with a 3406C out of a holler here in WV to Kentucky. It had set for 2+ years untouched, as the owner had passed away.

    Checked all the fluid levels, installed new batteries, and shined a light in the fuel tank which was very clean actually.

    I was surprised that with only 3 turns of the crankshaft it roared to life, and the oil pressure came right up. Obviously a good tight fuel system.

    If it doesn’t start with minimal cranking don’t burn the starter up, check the fuel filter and replace if needed with new fuel….
    Oxbow, clausland and bzinger Thank this.
  7. roundhouse

    roundhouse Road Train Member

    Jul 11, 2018
    Now is a prefect time to swap to a 13 speed

    what kind of truck is it ?
  8. AModelCat

    AModelCat Road Train Member

    Jul 7, 2015
    If fluid levels are good, drain the water seperator and prime it. I wouldn't worry about anything else.
    Oxbow Thanks this.
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