case 450B Dozer

[thomas reed]

I am looking at a 450B thats for sale Motor rebuilt about 150 hours ago tracks in good shape the only problem I see is has a leak hydrolic fluid leaking out from under the bottom. Does the transmission and hydrolic system work off the same tank? The man that has it said it would leak about 5 gallon in 2 hours. He thinks it might be a line but has not under it too see he hires all his work done and does not have the money to have it checked asking 7500 for it. Does the transmission give trouble on the 450B?

 

[Anonymous-0]

Could be transmission seal. Liked the one I had only problem was when the torque converter charge pump got weak you couldn't park the front end down the hill or it would not move. have to take the excavator pull the front end around.

 

[Josie]

Not sure on the 450B, but the 450 I have has two hyd. systems. The tank for the blade hyd.'s is to the right rear of the driver and the trans. is under the driver seat. Both systems have return lines that would leak underneath. Need to know which system you are losing fluid?

 

[Anonymous-0]

Thanks for the help. Does anone know of anything I need to look for other than usual things you look for when looking at a dozer? I guess what I am trying to ask is if the 450B has any know trouble spots? I bought it so I will have to live with what ever the problems are if any. The charge pump when it is giving problems what do you look for does it leak external when I went to unload it was a little down hill so I let it roll off the when I put it in gear it would not move so killed it let it set for a little bit then it would go ok what happened?