Hyundai HX140L, Manual

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7-8
SWING SPEED
Measure the time required to swing three
complete turns.
Preparation
Check the lubrication of the swing gear
and swing bearing.
Place the machine on flat, solid ground
with ample space for swinging. Do not
conduct this test on slopes.
With the arm rolled out and bucket rolled
in, hold the bucket so that the height of
the bucket pin is the same as the boom
foot pin. The bucket must be empty.
Keep the hydraulic oil temperature at
50
·
5˚C.
Measurement
Select the following switch positions.
Power mode switch : P mode
Operate swing control lever fully.
Swing 1 turn and measure time taken to
swing next 3 revolutions.
Repeat steps
ྚ
and
ྛ
three time and
calculate the average values.
Evaluation
6)
(1)
(2)
ྙ
ྚ
ྛ
ྜ
(3)
ྙ
½
ྚ
ྛ
ྜ
Unit : Seconds / 3 revolutions
The time required for 3 swings should meet the following specifications.
Model
HX140 L
Power mode switch
P mode
Standard
15.6
·
1.5
Maximum allowable
19.5
(4)
14097MS07