Hyundai HX140L, Manual

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7-5
TRAVEL SPEED
Measure the time required for the
excavator to travel a 20 m test track.
Preparation
Adjust the tension of both tracks to be
equal.
Prepare a flat and solid test track 20m in
length, with extra length of 3 to 5 m on
both ends for machine acceleration and
deceleration.
Hold the bucket 0.3 to 0.5 m above the
ground with the arm and bucket rolled in.
Keep the hydraulic oil temperature at
50
·
5˚C.
Measurement
Measure both the low and high speeds
of the machine.
Before starting either the low or high
speed tests, adjust the travel mode
switch to the speed to be tested, then
select the following switch positions.
Power mode switch : P mode
Star t traveling the machine in the
acceleration zone with the travel levers
at full stroke.
Measure the time required to travel 20 m.
After measuring the forward travel
speed, turn the upperstructure 180
ଟ
and measure the reverse travel speed.
Repeat steps
ྜ
and
ྜྷ
three times in
each direction and calculate the average
values.
Evaluation
0.3~0.5m
3~5m 20m 3~5m
3)
(1)
(2)
ྙ
ྚ
ྛ
ྜ
(3)
ྙ
ྚ
½
ྛ
ྜ
ྜྷ
ྞ
The average measured time should meet the following specifications.
(4)
Unit : Seconds / 20 m
Model
HX140 L
Travel speed
1 Speed
2 Speed
Standard
21.8
·
2.0
12.9
·
1.0
Maximum allowable
27.3
16.1
Remarks
14097MS04
14097MS05