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7-7
TRAVEL DEVIATION
Measure the deviation by the tracks from
a 20m straight line.
Preparation
Adjust the tension of both tracks to be
equal.
Provide a flat, solid test yard 20 m 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 the amount of mistracking at
high and low travel speeds.
Before beginning each test, 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 distance between a straight
20 m line and the track made by the
machine. (Dimension a)
After measuring the tracking in forward
travel, turn the upperstructure 180
ଟ
and
measure that in reverse travel.
Repeat steps
ྜ
and
ྜྷ
three times and
calculate the average values.
Evaluation
0.3~0.5m
5)
(1)
(2)
ྙ
ྚ
ྛ
ྜ
(3)
ྙ
ྚ
½
ྛ
ྜ
ྜྷ
ྞ
Unit : mm / 20 m
Mistrack should be within the following specifications.
3~5 m extra length
3~5 m extra length
20M
a
Model
HX140 L
Standard
200 below
Maximum allowable
240
Remarks
(4)
14097MS04
(210-7) 7-7(2)
Summary of Contents for HX140L
Page 12: ...SECTION 1 GENERAL SECTION 1 GENERAL Group 1 Safety Hints 1 1 Group 2 Specifications 1 10...
Page 209: ...4 5 MEMORANDUM...
Page 694: ...8 68 125LCR8TM30 Turn casing 1 upside down and remove oil seal 3 using jig 29...
Page 734: ...8 108 Assemble plug 2 Plug NPT1 16 11 EA 17 21078TM68 21078TM69 21078TM70 21078TM71...
Page 756: ...8 130 Remove lock nut 22 and then boot 23 14 36078RL14 2507ARL10...