
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
6-11
YES
Is MCV pilot
pressure same
for LH and RH?
Clogged or oil
leak.
Check if pilot
piping is clogged
or does have oil
leakage.
Does swing control
valve spool move?
Does symptom
change when LH
and RH port
relief valves are
exchanged?
SWING MOTION IS IMPOSSIBLE IN ONE DIRECTION
3)
Is swing control
valve's return
spring normal?
Is gear pump pilot
pressure within
standard level?
Does swing spool
move?
Is MCV pilot
pressure within
standard value?
MACHINE SWINGS BUT DOES NOT STOP
4)
Pilot relief valve is
faulty.
Gear pump is
broken.
RCV is faulty.
Swing spool is
stuck.
Return spring is
faulty.
Disassemble
and repair or
replace.
Disassemble
and repair.
Disassemble
and repair.
Disassemble
and repair.
Disassemble
and replace.
Swing port relief
valve is faulty.
Shuttle valve is
faulty.
Swing control valve
spool is stuck.
RCV is faulty.
Disassemble
and repair.
Disassemble
and repair.
Disassemble
and repair.
Disassemble
and repair.
Clean pilot piping
interior or repair
piping.
Cause
Remedy
Cause
Remedy
NO
See Note 2
See Note 2
See Note 1
Содержание HX140L
Страница 12: ...SECTION 1 GENERAL SECTION 1 GENERAL Group 1 Safety Hints 1 1 Group 2 Specifications 1 10...
Страница 209: ...4 5 MEMORANDUM...
Страница 275: ...4 49 No of pin Receptacle connector female Plug connector male 14 1 7 6 14 MG610406 KET SDL CONNECTOR 13...
Страница 675: ...8 58 29 Insert O rings to the relief valve 30 and reassemble them to rear cover 20 This completes assembly 17 32038SM42...
Страница 694: ...8 68 125LCR8TM30 Turn casing 1 upside down and remove oil seal 3 using jig 29...
Страница 703: ...8 77 125LCR8TM61 After assembling spring 44 in order clamp plug 41 Tightening torque 5 kgf m 36 lbf ft 31...
Страница 734: ...8 108 Assemble plug 2 Plug NPT1 16 11 EA 17 21078TM68 21078TM69 21078TM70 21078TM71...
Страница 756: ...8 130 Remove lock nut 22 and then boot 23 14 36078RL14 2507ARL10...
Страница 767: ...8 141 14 15 3 Install cover 3 to body 1 and tighten bolts 14 Torque 10 12 5 kgf m 72 3 90 4 lbf ft 7 21078DA10...