Hyundai HX130LCR Manual page 404

9) HYDRAULIC CYLINDER CYCLE TIME
(1)
Measure the cycle time of the boom,
standard arm, and standard bucket
cylinders.
(2) Preparation
To measure the cycle time of the boom
①
cylinders:
With the arm rolled out and the empty
bucket rolled out, lower the bucket to the
ground, as shown.
To measure the cycle time of the arm
②
cylinder.
With the empty bucket rolled in, position
the arm so that it is vertical to the ground.
Lower the boom until the bucket is 0.5 m
above the ground.
To measure the cycle time of the bucket
③
cylinder.
The empty bucket should be positioned
at midstroke between roll-in and roll-out,
so that the sideplate edges are vertical to
the ground.
Keep the hydraulic oil temperature at
④
50±5˚C.
(3) Measurement
Select the following switch positions.
①
Power mode switch : P mode
·
To measure cylinder cycle times.
②
- Boom cylinders.
Measure the time it takes to raise the
boom, and the time it takes to lower the
boom. To do so, position the boom at
one stroke end then move the control
lever to the other stroke end as quickly
as possible.
- Arm cylinder.
Measure the time it takes to roll in the
arm, and the time it takes to roll out the
arm. To do so, position the bucket at
one stroke end, then move the control
lever to the other stroke end as quickly
as possible.
Boom cylinder
Arm cylinder
Roll out
0.5m
Bucket cylinder
Roll out
0.5m
7-11
Raise
Lower
Roll in
Roll in
145ZF7MS10