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Thread: M35a2 6x6

  1. #1
    Sergeant RollingThunder19's Avatar
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    Default M35a2 6x6

    Hi I own a deuce and was noticing some possible 6x6 issues while off road. Since I live in indiana its snowed recently and I was driving offroad noticed my rear tires spinning but nothing from the front. I noticed the front wheels would engage sometimes but not all the time even if rear wheels were spinning. While going through a ditch that's 1 ft to 1 ft and a half deep the front wheels wouldnt spin only rear and after going 1 to reverse I would look out and see the front would spin in reverse and pull me out like it should but I couldnt get it to do it all the time. This is my first winter with the truck and didnt know if anyone has came across this or know what's going on

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    USAFSS-ColdWarrior (01-21-2019)

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    4 Star General Scar59's Avatar
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    Need a little info about the truck, is it equiped with the air shift lever/switch located under the dash? Or, is the truck equipped with the sprag equipped transfer case?
    I'm not saying let's eliminate all the stupid people. I'm just saying let's remove all the warning labels and let the problem work itself out.



    1997 M35A3C, 1987 M35A2C, 1973 M35A2C, 1971 M813A1 W/W, 1985 M931A1, 1985 M925, 1972 m817, 1984 M936, 1984 M923, M105A1 (4ea), 1972 M38A1, MEP 002a on M116A3. MEP531A, MEP501s
    2 dogs, 2 cats
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    Satisfied BEEFCO customer.

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    dumpsterlandingfromorbit! gimpyrobb's Avatar
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    Sounds like a sprague t-case. Often what happens is the forward clutch wears out before the reverse.

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    USAFSS-ColdWarrior (01-21-2019)

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    Sergeant RollingThunder19's Avatar
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    The truck has a sprag tcase

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    USAFSS-ColdWarrior (01-21-2019)

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    Sergeant RollingThunder19's Avatar
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    I was driving in the snow today and noticed the front axle would engage in 1st and reverse but not everytime. It seemed like if I turned the wheel a certain way it engaged dont know if that's just by luck or has anything to do with it. I probably engaged 1st and reverse maybe 6 times and reverse engaged 2 out of the 6 times

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    4 Star General Tracer's Avatar
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    I you can afford to, replace the sprag transfer case with an air shift.
    1972 M35A2C W/W, 1986 M105A2, 1953 M38A1, S250 Shelter. "He was old and wise, which meant tired and disappointed" T.E. Lawrence

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    Sergeant RollingThunder19's Avatar
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    The truck only has 14k miles on it and I find it hard to believe that anything with the tcase is bad already. I saw some posts say there might be an adjustment for the tcase? Dont know much about that or if that could fix the issue

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    2 Star General fasttruck's Avatar
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    Check to organizational maintenance manual, TM 9-2320-209-20 and see if it says anything about adjusting the sprag. Otherwise changing out the transfer case is an animal job.

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    Sergeant RollingThunder19's Avatar
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    I thought about replacing the tcase before but figured everything with my current truck was fine till I started noticing the front axle would engage only sometimes.

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    USAFSS-ColdWarrior (01-21-2019)

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    Sergeant RollingThunder19's Avatar
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    I have a manual that I found online not sure which one it is but it's pretty informational and I can see what I find about adjusting it

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