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11)
CONTROL LEVER OPERATING FORCE
(1)
Use a spring scale to measure the
maximum resistance of each control lever
at the middle of the grip.
(2)
Preparation
Keep the hydraulic oil temperature at
①
50±5˚C.
(3)
Measurement
Start the engine.
①
Select the following switch positions.
②
Power mode switch: P mode
·
Operate each boom, arm, bucket and
③
swing lever at full stroke and measure the
maximum operating force for each.
Lower the bucket to the ground to raise
④
one track off the ground. Operate the
travel lever at full stroke and measure the
maximum operating force required.
When finished, lower the track and then
jack-up the other track.
Repeat steps ③ and ④ three times and
⑤
calculate the average values.
Evaluation
(4)
The measured operating force should be within the following specifications.
Model
HX130CR
HX130LCR
Kind of lever
Boom lever
1.5 or below
Arm lever
1.5 or below
Bucket lever
1.5 or below
Swing lever
1.5 or below
Travel lever
2.1 or below
7-14
Standard
Maximum allowable
1.7
1.7
1.7
1.7
3.15
Unit : kgf
Remarks
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