743B Hydraulic issues

[Marc Martello]

I have a 743B serial number 509321499 and at times the bucket and lift controls have a mind of their own, at times the arm lift control opens the 4 in1 bucket other times the bucket goes down instead of up, my guess is the main hydraulic control valve may have an issue, does anyone have an exploded view of the control valve and any insight where the problem may be ?
Thanks in advance.

 

[brdgbldr]

I have a 743B serial number 509321499 and at times the bucket and lift controls have a mind of their own, at times the arm lift control opens the 4 in1 bucket other times the bucket goes down instead of up, my guess is the main hydraulic control valve may have an issue, does anyone have an exploded view of the control valve and any insight where the problem may be ?
Thanks in advance.

Try this attachment.

 

[Marc Martello]

Awesome, thank you see how i go