Transmission help!!

[Iron Mule]

I have reverse in R, N and the first Drive slot. Truck will go forward sometimes in first gear slot. Sticky linkage/cable or stuck valve in valve body?? Truck has only had 500 miles since rebuild in 2009.

 

[m16ty]

I assume you have a M939 truck?

I'm not really understanding what your problem is but I'd say it's a linkage problem if it's not going into the gear you select. The transfer case high and low is also tied into the gear shift linkage and can sometimes cause shift troubles going into reverse if it's not adjusted right.

 

[Iron Mule]

It's in reverse while in reverse, nuetral and drive. No gear in 4,3,2 but tries to go into forward gear when it's put in 1. Yes it's a 931A1. It's been parked for 3 years so I'm guessing something is frozen up?

 

[GHall]

Sounds like linkage to me too..

 

[wsucougarx]

Got to be a linkage issue.

 

[m16ty]

Well if it works in "D" (5) all the gears are working. Time to pull out the TMs and adjust that linkage.

 

[Iron Mule]

I had reverse in D. Got it sorted out today, something was sticking inside the tranny. Put some tranny conditioner in it, drove it hard in reverse as this was all I had and it freed up in a few mins. Everything worked properly so I drained the fluid and serviced it. Drove it all afternoon and I love it. Now I need another one!