Hydraulic Issues

[pedrocar]

Hi I have a Cat 12g s/n 3wco1303 with a 3306 turbo fitted . Have a issue with the ripper power up ok
power down full lever will stall the motor at idle .Weve checked pressures ,removed the pin to the frame no
difference still stall , removed the hoses and joined together the motor dosent faulter either way reconnect back same issue .
Thanks

 

[Vetech63]

power down full lever will stall the motor at idle

What does it do when you give her some throttle?

removed the hoses and joined together the motor dosent faulter either way

It wont fault like that, there is nothing but circulation and no load.

Trying to lift the machine with ripper down pressure at engine idle......and the engine stalls? Its sounding kind of normal at the moment.

 

[pedrocar]

With throttle still have to feather the lever ,I have another machine dosent have this problem

 

[Vetech63]

Pic of ripper cylinder is needed for me. Does the cylinder have a lock valve in the circuit?

 

[pedrocar]

Yes it has a lock valve

 

[Vetech63]

Yes it has a lock valve

That is more than likely your problem. Is it actually bolted on the cylinder? .........or a separate block that the cylinder lines hook to?