6-40
GROUP 4 MECHATRONICS SYSTEM
CN-75
1
2
PUMP EPPR VALVE
9
CN-52
8
18
9
10
10
MCU
FUSE
NO.12
CN-1
Wiring diagram
1. ALL ACTUATORS SPEED ARE SLOW (SERIAL NO. : -#0610)
Boom, Arm, Bucket, Swing and travel speed are slow, but engine speed is good.
Spec : P-mode 1850
佳
50 rpm S -mode 1750
佳
50 rpm E-mode 1650
佳
50 rpm
Before carrying out below procedure, check all the related connectors are properly inserted and
fault code on the cluster.
INSPECTION PROCEDURE
侍
侍
侍
1)
SPEC : 100~700 mA
See TEST 2
SPEC : 2~25 kgf/cm
2
See TEST 3
SPEC : 15~25
凂
(20˚C)
See TEST 1
Check electric
current at EPPR
valve
Check resistance
at EPPR valve
Check pressure
at EPPR valve
YES
YES
YES
YES
NO
NO
NO
NO
Cause
Remedy
Defective
hydraulic system
Defective
EPPR valve
Defective MCU
Short circuit or
poor connection
between CN-52
-CN-75
Defective EPPR
valve
Replace
Replace
Check & repair
wire harness or
between CN-52
-CN-75
Replace
140L6MS01
Check if HCESPN
140 active fault
display on the LCD
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...