Checking Each Operating Speed; Boom Cylinder Speed; Arm Cylinder Speed - Kubota KX080-3 Workshop Manual

WSM KX080-3 Service
p. Operating speed

(1) Checking each operating speed.

[Important points]
1. Measure full stroke operating time with no load on the standard bucket.
2. Make several mesurement and use average time for judgement.
3. Two different measurements are expected for the forward and backward movements as well as
the right and left swivelings.
Obtain their respective measurements. Do not calculate for their average.
4. Before operation, make sure nobody is around the machine.
[Measurement conditions]
1. Engine rpm is max..
2. Hydraulic temperature is 50 ± 5°C, 122 ± 9°F.
3. Ground is flat.
4. Measure time after several pre-operation.
(2) Boom cylinder
(3) Arm cylinder
1. Arm and bucket cylinder shouls be most shorted posi-
tion.
2. Measure the time from the bucket is on the ground to
the boom highest position, and from the boom highest
position to the ground.
Note:The cushioning time is not included.
1. Position the boom and arm as showm at left.
2. Measure the arm cylinder full stroke operating time.
IV-S-56
Hydraulic system