Results 1 to 5 of 5

Thread: Smoked a tranny.

  1. #1
    Sergeant
    Join Date
    Jan 2016
    Location
    Colorado Springs, CO
    Posts
    93
    Thanks
    143
    Thanked 122 Times in 46 Posts

    Tech Smoked a tranny.

    Just trying to get a handle on what I may be up against. Last week at our local Veterans Day parade, I was on the way home running in "maybe" 3rd gear, plugging along at @ 30 mph and the truck started smoking like a Navy CPO on mid watch with unfiltered Camels thru the battery box and up thru the floor as it lurched hard to a stop. I shut off the engine and the wife and I did our abandon ship drill expecting flames and screams from women and children....fortunately, none of that happened....(well, no flames and no children's screams anyway).

    The smoke rapidly dissipated, but something bad just happened. Not wanting to tempt fate further, I called a tow truck and waited and watched the heat indicator rise in my wife's forehead and her gaze squeeze shut as it only took @ 2 hours to get a tow truck to arrive on a weekend. Looking up under the hood and body of the truck; nothing bad visible, do drops, or pools of dead truck fluid, no indicators of harm.

    I climbed back in and it started right up, ran fine, sounded fine. Just for fun I shifted into first and it pulled away like it should so I was now able to get out of the traffic lane. I experimented further, I also have reverse, acts normal. Still not wanting to tempt fate, I waited for the tow and eventually got home. Dropped the truck in the driveway and I was to drive it around like usual to get it backed back into it's stable and close the door.

    What I'm wondering is does anyone have any wild ideas what I might have broken? I haven't done a thing to it yet, waiting for more time and other projects to be done first. I have hopes the tranny may be salvageable since it still has life in it.

  2. #2
    Colonel CMPPhil's Avatar
    Join Date
    Aug 2016
    Location
    Temple, NH
    MVPA
    3083
    Posts
    399
    Thanks
    328
    Thanked 508 Times in 214 Posts

    Default

    Hi

    Well let's begin with some of the obvious and walk through what it might be. There are two approaches one figure out the most difficult/expense to repair. The other is to start with the simple/inexpensive to repair.

    Now to questions/things to check:

    1. check fluid levels and condition of the fluids
    2. evidence of heat, scorching or discoloration

    Once drove off with one of my truck with the parking brake partly on, 6 miles later oily smoke starts rolling out from under the truck into the cab, behind the truck. Pulled over grabbing the fire extinguisher and bailed out looking for the source, with smoke still rolling out from under the truck was about to call the fire department, when spotted that it was brake band on the back transfer case was the source. It was oil that had leaked out over the years on to the brake ban.

    Another time in the fall of the year took out another truck for a ride, this time the source of the billowing smoke was from the exhaust, and it smelled like burning oak. Turned out the little critters had decided to store a winter's worth a horns in the muffler and tail pipe, and I roasted for them.

    Now if your original assumption that it is/was the transmission it maybe that a lower gear cluster bearing has seized an the result was all the smoke.

    Cheers Phil

  3. #3
    Sergeant Major Roller's Avatar
    Join Date
    Apr 2010
    Location
    North Lake, WI
    Posts
    145
    Thanks
    168
    Thanked 31 Times in 27 Posts

    Default

    Sounds like its the parking brake dragging, that's my guess.

    Frank
    1952 M37 W/W, 360, and NV4500

  4. #4
    4 Star General Barrman's Avatar
    Join Date
    Dec 2005
    Location
    Giddings, Texas
    Posts
    4,320
    Thanks
    3
    Thanked 1,415 Times in 754 Posts

    Default

    Yep. Parking brake is my guess as well. I have done it 3 or 4 times in the last 18 years. The brake band is so saturated with gear oil you donít notice the slight drag until it all burns off. Then the Hand Of God reaches down and stops you in a hurry with lots of smoke.
    "If you didn't build it, you can't call it yours."

    1952 M35 W/W Gasser
    1953 M35 W/W Gasser
    1967 M715 6.2/NV4500
    1967 M416
    1971 M35A2 Whistler W/W
    1985 M1009
    1985 M1009
    1985 M1009
    1985 M1009
    1985 M1009
    1986 M105A3
    1987 M1007 Suburban (Cowdog)
    1988 M105A3
    1990 M101A2
    1991 M101A2

  5. #5
    3 Star General 67Beast's Avatar
    Join Date
    Oct 2005
    Location
    Silver Lake Sand Dunes MI.
    MVPA
    29604
    Posts
    818
    Thanks
    86
    Thanked 249 Times in 98 Posts

    Default

    I'm going to agree with others on this on the parking bake. I have done it before as well but caught it before I got too far and ended up in smoke, but you sure could smell it.
    Dave
    1967 Kaiser Jeep M715 weapons carrier
    1967 Kaiser Jeep M725 Ambulance
    1967 Kaiser Jeep M35a2 2.5 ton cargo truck
    1968 M51 Inflatable Chemical Shelter System
    1953 Dodge M37 weapons carrier
    1953 Jeep M38a1
    Delta Team Decals: http://www.deltateamdecals.com/

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •