Kubota K008-3 Workshop Manual page 260

Hydraulic system
Engine starts but whole
hydraulic system does
not operate.
Operating speed of
hydraulic equipment is
slow or its output power
is weak.
Free-fall of hydraulic
system is severe, does
not stop or becomes out
of control.
Whole hydraulic system does not operate.
Cylinder of any of boom, arm, bucket, Swing or dozer does not work.
Swivel operation is impossible.
Traveling operation is impossible.
Max. engine rotating speed is abnormal.
Operating speed of whole hydraulic system is
slow or its output power is weak.
Operating speed of cylinder of any of boom, arm,
bucket, Swing or dozer is slow or its output
power is weak.
Swivel speed is slow or turning power is weak.
Traveling speed is slow or traveling power is
weak.
Traveling speed selection is impossible.
Track travels askew.
Free-fall of cylinder of any of boom, arm,
bucket, Swing or dozer is severe.
Turning does not stop or becomes severely out
of control.
Travel does not stop or track runs away on a slop.
IV-S-4
Check hydraulic system.
Check front attachment.
Check swivel bearing system.
Check traveling system.
Check engine system.
Check hydraulic system.
Check front attachment.
Check swivel bearing
system.
Check traveling system.
Check traveling system
Check traveling system
Check front attachment.
Check swivel bearing
system
Check traveling system.
Courtesy of Machine.Market