Hyundai HX130LCR Manual page 400

5) TRAVEL DEVIATION
(1)
Measure the deviation by the tracks from
a 20m straight line.
(2)
Preparation
Adjust the tension of both tracks to be
①
equal.
Provide a flat, solid test yard 20 m in
②
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
③
ground with the arm and bucket rolled in.
Keep the hydraulic oil temperature at
④
50±5˚C.
(3) Measurement
Measure the amount of mistracking at
①
high and low travel speeds.
Before beginning each test, select the
②
following switch positions.
Power mode switch : P mode
·
Star t traveling the machine in the
③
acceleration zone with the travel levers at
full stroke.
Measure the distance between a straight
④
20 m line and the track made by the
machine. (Dimension a)
After measuring the tracking in forward
⑤
travel, turn the upperstructure 180。and
measure that in reverse travel.
Repeat steps ④ and ⑤ three times and
⑥
calculate the average values.
(4) Evaluation
Mistrack should be within the following specifications.
Model
HX130CR
HX130LCR
Standard Maximum allowable
200 below
7-7
3~5 m extra length
a
3~5 m extra length
Remarks
240
0.3~0.5m
145ZF7MS04
(210-7) 7-7(2)
Unit : mm / 20 m