Hitachi 135

[y2kf]

Have a ex 135 that is not tracking straight quite bad,in both directions,track motors done up last year,wondering about the wee valve on top off the hydraulic tank,tank has quit pressuring itself,heard it helps oil too the pump when ttank is pressureized

 

[Shovelhands]

Rotary coupling would be my next port of call I think?

 

[CPS]

Rotary coupling would be my next port of call I think?

Yea definitely, or could be the pump itself, swap the outlet hoses and see does the problem move

 

[jd6820]

Rotary coupling would be my next port of call I think?

Yep my money would be on the rotary coupling, ours had the same issue, you'd track in a circle easy with both levers pulled or push full travel. Now it tracks strong and balanced.

 

[y2kf]

Rotary coupling had its seals done too,wondering if it's not pressuring the tank,pump might not be getting enough oil but I'd douth that.

 

[V8Druid]

Rotary coupling had its seals done too,wondering if it's not pressuring the tank,pump might not be getting enough oil but I'd douth that.

Have a ex 135 that is not tracking straight quite bad,in both directions,track motors done up last year,wondering about the wee valve on top off the hydraulic tank,tank has quit pressuring itself,heard it helps oil too the pump when ttank is pressureized

interesting comment and a possibility ?