Ford 4500 industrial won't move when warm.

[Allen McMullen]

Hi. I'm helping a buddy work on his Ford 4500 industrial tractor that wont move forward or reverse when warm. It will go about 1/4 mile cold but then stops. It has the forward/Reverse on the steering coloum, and 4 forward gears and 1 reverse gear. It uses a torque converter and hydraulic pump to run the trans. We have changed the filter and oil with no results. We purchased a shop manuel from the Dealer $650.00 and it ended up only being for Ag. tractors and is realy no help. Last year he replaced the pump for the same problem and it worked for about a year but the other day it just stopped. Question, is there a way to pressure test with a guage the pump? is there a way to pressure test the Torque Converter? Is there anything else we should be looking into? Any help would be greatly appreciated. Allen.

 

[3nickles]

sooo it was many moons ago but we had a seal in the tranny go,seal (o ring ) only cost 5 dollars but the tractor had to be split and because we were in the middle of a busy construction season we paid a shop thousands to do the work.same symptoms.while in there have the torque rebuilt and loader should be amazing.having a reverse gear and a reverser must mean this loader is prior 76 ?

 

[Allen McMullen]

Yes pre 76. we plan to split the tractor this week. i realy need to find pressure ports to trouble shoot this thing.