I'm in the process of tearing down transmission number 3 of the 5 Canadian 303M's I brought home early September.
I found the transmission 'Lyle" warned me about that had died during an extraction from the mud. He mentioned the previous owner had tried to "rock" it out and during this procedure the transmission died.
I found out why.
Can anyone see what is wrong here ?
This is the "reverse internal gear" . It is the same part as a civilian transmission and should "NEVER" be rocked ! It was not made for the kinds of load the M135 can put on it. Also, you should always use low range when using reverse gear if you want your 303M transmission to live a long happy life. I know a lot of people get really testy about this, but the truth hurts sometimes.
It was not made strong enough to handle the weight of a M135 truck. Like I said, it is literally the same part used in cars. Like your great granddaddy's Oldsmobile.
I have never seen this kind of damage to this part on any car, only M135 trucks.
Kinda makes you think "HUMMMMM? " maybe this part should have been made bigger for this application ?
That 1" bright spot was the only thing still holding this part together.