L2250 PTO problems

[dieselcrawler]

Ive been going thru about 200 pictures I took during the 2850 project... Replacing the trans case. And a few broken pto gears.



The shaft with cast iron lever on the end in the lower right is the pto shift rod.



In this picture the pivoting assembly that transfers the vertical motion into fore/aft horizontal motion is in place, but not the vertical rod.



If the vertical rod moves slightly, its possible the pivot point that the mechanism in the picture above rotates on is froze up.

Unfortunately you would have to split the tractir to access it. Prior to that I would pull the trans cover to check the shift forks... More on that later.

 

[dieselcrawler]

Aha!!! I think i found the trick!



Note the hex head visible on the lower section, it very well may be the outter end of the pivot I mention earlier. I "think" it may be a smooth stud with threaded section that screws into the case wall, removable from the outside! That hex head ligns up with the hole that is where the pivot would go in the second picture in post 11.

 

[ancho]

Aha!!! I think i found the trick!



Note the hex head visible on the lower section, it very well may be the outter end of the pivot I mention earlier. I "think" it may be a smooth stud with threaded section that screws into the case wall, removable from the outside! That hex head ligns up with the hole that is where the pivot would go in the second picture in post 11.

Great pics and info, thanks.

I did remove the top cover from the trans, to verify that the shift forks appear to function correctly. everything visible in that area seemed normal, though being submerged in fluid, I can't see everything below the main shaft there.

 

[dieselcrawler]

You will need to drain the fluid to see the pto shift rail and gears.

 

[ancho]

You will need to drain the fluid to see the pto shift rail and gears.

Just did that this morning. The horizontal rod that actuates the pto shift fork is moving when I jiggle the lever. The fork moves a bit within its groove on the gear, but it appears that the gear may be seized on the shaft. So the linkage all appears ok, the question now is how to free that stuck gear.

 

[ancho]

Rather crusty in there -- normal? Or more likely a sign of neglect and too-infrequent fluid changes?

 

[SPYDERLK]

Just did that this morning. The horizontal rod that actuates the pto shift fork is moving when I jiggle the lever. The fork moves a bit within its groove on the gear, but it appears that the gear may be seized on the shaft. So the linkage all appears ok, the question now is how to free that stuck gear.

I assume you must "reach" down into the case in confined space, so you cant use a brass punch and tap on it directly. ... If you can reach it with the tip of a crowbar/wreckingbar, held vertically, and tap the bar sideways as close to the gear as possible it may break free.

-- Crusty is not normal. There has been water in the fluid. It might explain the gear being stuck. - If so, and you can move it, it should free up with Kroil and be OK.

 

[dieselcrawler]

Ugggghhhhh.... that looks terrible inside. Drain, clean, flush, scrape, flush, etc. Like mentioned above, the splines/gears are likely seized from the rust/water contamination. I've heard of a mix of auto trans fluid and acetone making a good rust penetrating fluid, dump a couple gallons of that in there and soak. You may be able to get it broke loose with a pry bar...


If you click on my pictures, will it connect you to my photobucket account, so you can view other pictures I haven't posted? There are many, you may find some value in looking.