Transmission difficult to go into gear only when cold

[kachurak]

I'm going to refer back to this thread (http://www.dieseltowingresource.com/showthread.php?t=5670) as it is mentioned there as well.

This only happens when it's cold outside, like 20 degrees and colder, or so it seems. The truck starts fine, but putting it into any gear, it's nearly forceful, I almost feel like I'm going to snap the shift lever.

What I've done to narrow it down, I don't believe its the cable from the shift lever as it moved freely when I replaced the NSB switch only about 1-1/2 months ago. Not sure what's up with this, any ideas would be helpful, thanks.

 

[busdriver75]

see if you can find the top of the cable and squirt a bunch of WD40. i had a similar problem with a fuel shut off cable on my wheel loader. wd40 seems to fix a lot of shit.

 

[MACKIN]

When you say the cable moves freely do you mean you disonected it from NSBU and the shift lever was free?

In addition I would find a Allison dealer http://www.allisontransmission.com/locator/mappoint/index.jsp?country=US and get a New NSBU .


Although most likely your gonna find it's probably the cable freezing.

 

[t2ch]

Sounds like the cable is freezing to me too. Does it do it after the truck is warm?
You may have gotten some water in the jacket of the cable and when it gets cold out it freezes.
I've seen this happen on a lot of different things, the main one is a Honda Rubicon. The choke cable is known for this problem.

 

[kachurak]

see if you can find the top of the cable and squirt a bunch of WD40. i had a similar problem with a fuel shut off cable on my wheel loader. wd40 seems to fix a lot of shit.

Will definitely try this, haven't yet, but it's going to be extremely cold the next few days.

When you say the cable moves freely do you mean you disonected it from NSBU and the shift lever was free?

In addition I would find a Allison dealer http://www.allisontransmission.com/locator/mappoint/index.jsp?country=US and get a New NSBU .


Although most likely your gonna find it's probably the cable freezing.

Did recently 1-1/2 months ago replace the NSBU switch - second one within a year grrr - and the shift cable did move freely after diconnecting it frm the NSBU.

Sounds like the cable is freezing to me too. Does it do it after the truck is warm?
You may have gotten some water in the jacket of the cable and when it gets cold out it freezes.
I've seen this happen on a lot of different things, the main one is a Honda Rubicon. The choke cable is known for this problem.

I was thinking the same thing and I'm hoping that's all it is. I've not taken apart the column to get to the cable before, so I'm going to see if I can work on it maybe thursday and git'r'done

Thanks for the replies too!