case 550 lt dozer won't move

rmg

Member
Just an update on this situation. Dozer is a 550G LT. I think what CJinMI said could be right. Friend had a mechanic I do not know look at dozer and he took some lines loose I guess going to trans pump and he says pump is not pumping. I'm a little skeptical about all this, so I will try and go Thursday and see if I can figure out if pump is working. I'm not sure he got all the oil and water drained, says he can't see a drain plug under their. I think I understand where the microswitch is for the gearshift park position and I will check that. If I determine pump is not working will try to help him get it apart to see what's wrong. I am more familiar working on my Komatsu than a Case. Thanks to everbody that has helped and given me some ideas.
 
Is the pump mounted on the engine or is it a later model with the charge pump in the torque converter housing,in either case it maybe that its lost its prime,if you could remove the oil feed pipe connected at the pump and fill it with oil you may get a result,is the shaft coming out of the torque spinning,if so the trouble is in the transmission,the control valve could have an issue or there could be something sheared,if the shaft is not spinning the trouble is in the torque.
AJ
 

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