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7-20
Main pump
a1
a2
Pressure sensor
Monitoring
(analog)
Cluster
Preparation
Keep the hydraulic oil temperature at
50
·
5˚C.
Measurement
Select the following switch positions.
Power mode switch : P mode
Slowly operate each control lever of
boom, arm and bucket functions at full
stroke over relief and measure the
pressure.
In the swing function, place bucket
against an immovable object and
measure the relief pressure.
In the travel function, lock undercarriage
with an immovable object and measure
the relief pressure.
Evaluation
(1)
ྙ
(2)
ྙ
½
ྚ
ྛ
ྜ
The average measured pressure should be within the following specifications.
Unit : kgf / cm
2
( ) : Power boost
SYSTEM PRESSURE REGULATOR RELIEF SETTING
17)
(3)
Model
HX140 L
Function to be tested
Boom, Arm, Bucket
Travel
Swing
Standard
350 (380)
·
10
350
·
10
285
·
10
Port relief setting at 20 lpm
400
·
10
-
-
140L7MS03
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...