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rowan shaffer

New Member
Joined
Oct 6, 2025
Messages
2
Location
pa
I’m having trouble with my case 1450b dozer. We just had the left finial drive replaced. When we started it up after the work was done the break in the winch was stuck on from a broken pin causing the engine to have a load. We got the break released and moved past that issue. I ran the bulldozer not hard just pushing some dirt and mainly back blading. After two ours of running it i was pushing dirt up an incline (motocross jump) and the dozer stalled. After it stalled i tried to start and up again and it wouldn’t start. I let it sit for 35 minutes and the dozer started right up but would not go into gear at first. After the dozer went into gear it would run and move around then lose power then completely not move again. Trans pressure gone. It would come on and off. Trans oil is full. The dozer then started to move again so I took the dozer up on a flat surface and parked it knowing something was wrong with it. Now the next day the dozer will not move at all it seems like it’s engaging in gear can see the track move a little bit sometimes when u put it in gear but still doesn’t move no trans pressure and now here a thump almost like a gargling noise coming from the hydraulic tank when i leave off the gas which is weird. The sound wasn’t there before this happened. The torque converter was just rebuilt a year ago. The hydraulic pump was also rebuilt with that job. The dozer doesn’t move and i have no idea where to start. I removed the 2 skid plates towards the back and see no obvious broken lines or leakage. The driveshaft under the seat doesn’t stop spinning when put in gear. The trans oil dipstick has some metal in it now. I have looked through my service manual and cannot find anything, thinking maybe charge pump. I am completely lost right now looking for help where to start. Thanks
 

alrman

Senior Member
Joined
Jun 20, 2009
Messages
3,495
Location
SE QLD Australia
Occupation
Diesel Fitter;Small Business Owner;Cleaner
Welcome to HEF @rowan shaffer
Have you made any advancements on this?
Are you sure the "metal" in the transmission oil is not air bubbles?
If it is metal - you should drain the oil & check the suction screen. Was that checked & cleaned during the convertor replacement?

There's a few things that can go wrong in the transmission control valve that will cause low or no oil pressure too - blown gaskets / broken springs.
 

rowan shaffer

New Member
Joined
Oct 6, 2025
Messages
2
Location
pa
i’m not completely sure if the suction screen was checked i will do that now thinking maybe charge pump went bad
 
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