Need help with fial-allis 7gb loader

riwest · Mar 2, 2014

Looking for some help with my Fiat-Allis 7G-B track loader.Used it for about 4 hrs one day.Got on it 3 days later there was no trans pressure and it will not move forward or backward.Never had any problems with it before, always worked great.I have changed the trans filter,cleaned the bottom scavenge screen.Took the trans pump off and had it worked on.When I crank it up and run it some I can hear the hyd oil draining down from the top of the trans.The shaft between the trans and the torque converter barely turns when idling. Shouldn't it be turning at a good speed when running? What have I missed? Hope someone can point me in the right direction.

Thanks,Rick

deerseeker001 · Mar 2, 2014

Welcome from wisconsin

riwest · Mar 3, 2014

Thanks, Looks like a great place to get some helpful information in time of need.By the way my location is Cleveland, Ga

Dirthog · Mar 3, 2014

Check all the hoses on the suction side of the pump even if they look good they will crack inside and suck air which it sounds like it is doing.

riwest · Mar 3, 2014

Thanks Dirthog, I will do that what your thoughts on the shaft turning slow.My smaller komatsu dozer shaft turns at a pretty good speed while idling.

Dirthog · Mar 5, 2014

Well if it does not have pressure it will not turn the torque needs oil flow and pressure to work properly.

riwest · Mar 7, 2014

I don't know alot about heavy eq. Been trying for 2 months to get this guy out to my place to work on it. Due to weather and some health issues he hasn't made it yet.I have restore old cars for yrs but this is a old differ new world. That will be my next step I have looked at the hoses and they look good from the outside. How the best way of checking them?