I have a case 580 backhoe, Construction King, with a shuttle shift transmission. It moves forward but will not move when I put it in reverse. What could be the problem?

This is not a quick fix. Check fluid levels as the switching is hydraulic. You may need to consult a transmission expert if the synchro is failing.

The machine's Power-shuttle gearbox features four fully synchronized gears and electro-hydraulic switching between forward and reverse. For better balance, the transmission is mounted directly to the engine.

https://www.volvoce.com/-/media/volvoce/global/global-site/product-archive/documents/04-backhoe-excavator-loaders/04-volvo/v-bl71/v-bl71-bl71-plus-21c1002689-2010-04.pdf?v=HSEyPw

and

https://www.google.com/search?q=Volvo+BL71+Backhoe+Loader.+It+is+jumping+out+of+gears

..

Prior Models CASE Construction Equipment


I am guessing it is a 580 Super E. If so, go to the above link and search for 580 Super E. It will, although slowly, give you a click able link that will let you view specifications. There are a few options, so I will let you calculate the final weight.

Semper Fi,
Z

Yes the transmission has failed, rebuild it.

Hi Bill:
I'd check with my local Case dealer. We have several pieces of Case equipment with hydostatic drives.
If I remember correctly, high gear on a standard transmission is a 1:1 ratio in that the power is on a straight through shaft.
My suspicion would be that a shifter link ay have become dis-connected.
Here's a link that may assist.
https://www.google.ca/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=1987+case+backhoe+580k+4x4+transmission+diagram
Cheers

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Sounds like the reverse band or servo has gone out. Transmission shop needed for a confirmation.

The question is a little vague but I think I know what your referring to. All modern automatic transmissions have torque converters. This is the device that connects the engine to the transmission. All vehicle manufacturers like the trans to be nice and smooth shifting. That's great but it does come with some minor drawbacks. If you are facing slightly down hill and you put your car in reverse but do not step on the gas slightly I can guarantee that you will indeed roll forward. You can eliminate that issue by holding your left foot on the brake while you shift into reverse. Then, as soon as you feel the trans engage, gently depress the gas pedal with your right foot and it will eliminate that forward roll problem.

Is it a 4x4? Sounds like the transmission (or transfer case) is binding internally, or you brakes are locking up and shifting from forward to reverse frees them up.

Assuming this is an automatic transmission, odds are you have lost a band in your transmission, this will require a rebuild,  you may also notice it will fail to shift into high gear as well?