HLR transmission

[T-Foster]

I have a straight John Deere 450 dozer with the HLR transmission. The dozer has been setting for a long period of time. The guy that owned had passed away so I can’t get any history on it. It starts and runs fine, I have 150 psi it the transmission. I can shift gears but the hlr shifter will not move at all. I’m know that it is inside the transmission. I haven’t taken the top cover off yet, I have it all ready to be removed. Question is what should I look for that would make it impossible to move the shift linkage?

 

[Jim.ME]

Welcome to the forums.

Do you have the correct John Deere service/technical manual for your straight 450?

Have you unhooked the HLR linkage at the side of the transmission and confirmed everything external moves without issue?

If it does, there is not much choice but to open it up and look inside.

 

[Roy Suomi]

That shifter is pretty straight forward. It's light shift parts inside. If it won't budge from the outside, don't force it. It's probably stuck in the knuckle on the side of the trans case. Plenty of penetrant and an occasional tap with a hammer to shock it. If you need to get inside, there's a flat link with a clip that attaches the link to the shift valve. The shift valve will come off with 2 - 5/16" bolts after a lube line comes off. Shift valve pulls straight up and out.

 

[T-Foster]

That shifter is pretty straight forward. It's light shift parts inside. If it won't budge from the outside, don't force it. It's probably stuck in the knuckle on the side of the trans case. Plenty of penetrant and an occasional tap with a hammer to shock it. If you need to get inside, there's a flat link with a clip that attaches the link to the shift valve. The shift valve will come off with 2 - 5/16" bolts after a lube line comes off. Shift valve pulls straight up and out.

The valve in the transmission was stuck. Found this after I took the top cover off. It took a little prying to get out, polished it. Works like a charm now.