722 Clark Bobcat

[ChandlerW]

Greetings all. I am new to this forum and soon to be the proud owner of a 722 Clark Bobcat. Its a little older model and has a few issues. I'm new to skid steers but pretty handy with a wrench. The owner told me that a new hydraulic unit was installed by someone before he bought it. The installer reversed or crossed up some hoses and the machine doesn't respond to the sticks like it should. Where can I find out how the hoses are routed?

 

[OldMachinist]

Original lines on the 722 hydrostatic system were all steel lines so a picture or diagram may not do much good. If you explain what it's doing maybe someone here can help.

 

[ChandlerW]

Original lines on the 722 hydrostatic system were all steel lines so a picture or diagram may not do much good. If you explain what it's doing maybe someone here can help.

Received some more information from the seller. When both sticks are pushed forward, it will (would) spin in a circle. There are 4 lines going to the hydraulic unit. 3 are rubber, one is steel. So I guess the 3 have replaced the original steel lines. Some history of the machine. The hydraulic unit (not sure what the technical term is (PTO?)) went bad. It was replaced by a mechanically inclined person and when the owner went to test it out the machine didn't work right. The owner attempted to call back the 'mechanic' but couldn't get him to come back. The guy had already been paid and considerd the job done. The machine has been sitting since then.
Another problem is that I need to load this machine on my trailer. Do I need to disconnect the driveline to pull it up on my trailer? I read somewhere else on the forum that its possible to bungee cord the handles forward and drag it, but if the handles don't work right, that might not be an option.
Any thoughts are appreciated.

 

[Bobcatdan]

Received some more information from the seller. When both sticks are pushed forward, it will (would) spin in a circle. There are 4 lines going to the hydraulic unit. 3 are rubber, one is steel. So I guess the 3 have replaced the original steel lines. Some history of the machine. The hydraulic unit (not sure what the technical term is (PTO?)) went bad. It was replaced by a mechanically inclined person and when the owner went to test it out the machine didn't work right. The owner attempted to call back the 'mechanic' but couldn't get him to come back. The guy had already been paid and considerd the job done. The machine has been sitting since then.
Another problem is that I need to load this machine on my trailer. Do I need to disconnect the driveline to pull it up on my trailer? I read somewhere else on the forum that its possible to bungee cord the handles forward and drag it, but if the handles don't work right, that might not be an option.
Any thoughts are appreciated.

I'd pass on it. 722 are ancient and that one sounds like a cobbled basket case. It maybe is simple like drive motor hoses are mixed up which wouldn't be that hard to correct. However if other stuff is mixed up, things could be wrecked. A 722 is realistically maybe worth $1500 working. Anything majorly wrong with it will exceed the value of the machine. I kinda go against the grain here and think anything older then a 753 should be scrapped.

 

[Tazza]

I'd pass on it. 722 are ancient and that one sounds like a cobbled basket case. It maybe is simple like drive motor hoses are mixed up which wouldn't be that hard to correct. However if other stuff is mixed up, things could be wrecked. A 722 is realistically maybe worth $1500 working. Anything majorly wrong with it will exceed the value of the machine. I kinda go against the grain here and think anything older then a 753 should be scrapped.

As long as it's priced well, there may be a few more years in it yet.
To work out what goes where, i'd get a parts list, these are excellent at showing you what connects to what. If you are friendly to your local dealer, they can send parts lists of sections for you.
I'm with Dan on the fact it could just be a crossed hose to a drive motor.
As for towing, i have never had any real sucess with the bungee cords, i remove the hoses to the drive motors and drag it slowly or use brute force and drag it up on to a truck.

 

[OldMachinist]

As long as it's priced well, there may be a few more years in it yet.
To work out what goes where, i'd get a parts list, these are excellent at showing you what connects to what. If you are friendly to your local dealer, they can send parts lists of sections for you.
I'm with Dan on the fact it could just be a crossed hose to a drive motor.
As for towing, i have never had any real sucess with the bungee cords, i remove the hoses to the drive motors and drag it slowly or use brute force and drag it up on to a truck.

It does sound like one of the drive motors is plumbed backwards. If it will run you should be able to drive it in a straight line by pulling back on one stick and forward on the other.

 

[ChandlerW]

It does sound like one of the drive motors is plumbed backwards. If it will run you should be able to drive it in a straight line by pulling back on one stick and forward on the other.

I'm going to get it today. The price is right. I'll try turning the motor and holding the sticks to see if it will move for me. If that doesn't work I'll disconnect the drive hoses and try to drag it up on the trailer. I'm sure its going to be a project.