Hydraulic release need to roll a DOA Bobcat 763

[Ashkicker]

Hello i'm sure this has been answered before i've look real quick with no luck....... I've got a bobcat 763 thats DOA and i need to get it up on a trailer, My question is i remember hearing if you disconnected a hose or something the machine would roll. ANy help would be great. Thanks again

 

[farmshop]

Most have a mechanical pin for park lock. 2 bolts and you can remove solenoid than clamp up pin. After that you would have to remove drive motor hoses although it will roll with them hooked up but I done know how far you should move it with them hooked up

 

[OldMachinist]

Most have a mechanical pin for park lock. 2 bolts and you can remove solenoid than clamp up pin. After that you would have to remove drive motor hoses although it will roll with them hooked up but I done know how far you should move it with them hooked up

If the electrical system is dead then you'll need to remove the traction lock solenoid to unlock the parking brake.

 

[TriHonu]

If the electrical system is dead then you'll need to remove the traction lock solenoid to unlock the parking brake.

This question has been posted a number of times. I have a 763 C Series. It has a Sauer Danfoss Hydrostatic Pump. I downloaded the Complete Pump Service Manual from the Sauer Danfoss website. I wanted a copy to add to my 763 Service Manual in case I need it in the future. As I read the manual I was surprised to read that the pump is designed with 4 Bypass valves. The manual states, "In some applications it is desirable to bypass fluid around the variable displacement pump allowing, for example, a vehicle to be moved short distances at low speeds without running the prime mover." It warns "Opening the bypass valves will result in a loss of hydrostatic braking capacity. Take precautions to prevent machine movement when opening the valves." I extracted these 4 pages of the manual and highlighted the key information. Now the bad news. You have to loosen 4 valves (2 on each pump section). Two are easy to get to on the top of the pumps. The other two are on the BOTTOM of the pumps just above the fuel tank. Getting to the bottom two Bypass Valves maybe doable, but you will probably have to come in from the engine side. You use a 5/16 inch Allen Wrench to loosen the valves (no more than 4 turns). So at least for my loader the answer is the hydrostatic pumps are designed to allow you to tow the machine without draining any oil or disconnecting any hoses or parts. The issue is whether Bobcat left enough room to get to the bottom two valves. I wonder if the engine and pump mounts could be loosened enough to tip the pump up so you have enough room to access the valves?
The note above about releasing the parking brake still applies since it mechanically locks the drive line independent of the hydrostatic system.

 

[lesgawlik]

This question has been posted a number of times. I have a 763 C Series. It has a Sauer Danfoss Hydrostatic Pump. I downloaded the Complete Pump Service Manual from the Sauer Danfoss website. I wanted a copy to add to my 763 Service Manual in case I need it in the future. As I read the manual I was surprised to read that the pump is designed with 4 Bypass valves. The manual states, "In some applications it is desirable to bypass fluid around the variable displacement pump allowing, for example, a vehicle to be moved short distances at low speeds without running the prime mover." It warns "Opening the bypass valves will result in a loss of hydrostatic braking capacity. Take precautions to prevent machine movement when opening the valves." I extracted these 4 pages of the manual and highlighted the key information. Now the bad news. You have to loosen 4 valves (2 on each pump section). Two are easy to get to on the top of the pumps. The other two are on the BOTTOM of the pumps just above the fuel tank. Getting to the bottom two Bypass Valves maybe doable, but you will probably have to come in from the engine side. You use a 5/16 inch Allen Wrench to loosen the valves (no more than 4 turns). So at least for my loader the answer is the hydrostatic pumps are designed to allow you to tow the machine without draining any oil or disconnecting any hoses or parts. The issue is whether Bobcat left enough room to get to the bottom two valves. I wonder if the engine and pump mounts could be loosened enough to tip the pump up so you have enough room to access the valves?
The note above about releasing the parking brake still applies since it mechanically locks the drive line independent of the hydrostatic system.

I have thought that someone should make a set of wheel substitutes out of old wheels. They would be like Lazy Susans, and would allow the perimeter of the wheel to move independent of the axles. That would be a good item for a service truck. All you would need is a jack, the skidder wheels and a lug wrench. The skidsteer could be towed indefinitely, with no risk to the hydraulics. Has anyone tried moving a tracked skidsteer using a number of iron pipes as rollers?

 

[farmshop]

I have thought that someone should make a set of wheel substitutes out of old wheels. They would be like Lazy Susans, and would allow the perimeter of the wheel to move independent of the axles. That would be a good item for a service truck. All you would need is a jack, the skidder wheels and a lug wrench. The skidsteer could be towed indefinitely, with no risk to the hydraulics. Has anyone tried moving a tracked skidsteer using a number of iron pipes as rollers?

Easiest way to move a dead loader is with a pay loader we just pick them up and carry it away

 

[Ashkicker]

If the electrical system is dead then you'll need to remove the traction lock solenoid to unlock the parking brake.

Thanks so much for the reply's it was a 2002 machine so it had the dash noted above so that helped. We used another 763 and hitting the override and got it up on the trailer. Now the work begins. Thanks again