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3-34
RIGHT
LEFT
TRAVEL
STRAIGHT
TRAVEL
TRAVEL
BOOM 1
SWING
BOOM 2
ARM 1
OPTION B
OPTION C
(DOZER)
ARM
BUCKET
ARM 2
REGEN
Pu
P1
P2
P3
Pd0
Pd41
B2
A2
Pb1
A1
B1
Pa1
T1
V3
Pd2
Pc2
Pc1
P0
DR0
Pd1
Ai
B4
B5
A5
Pa5
Pb5
Pa4
Pb4
C5
D5
Pc41
Rs
DR4
P03
Patt
P02
Pn2
Pn1
Po5
Puo
P04
DR2
Pc3
Pb21
Pb20
Pa20
DR1
DR5
DR3
Pc40
Pd40
PS
PS
Pi1(Pump)
Pi2(Pump)
BUCKET
CYLINDER
BOOM
CYLINDER
A1
PUMP
A2
PUMP
PILOT
PUMP
HYDRAULIC TANK
Pd41
Pb3
Pc42
Pc40
Pc41
C6
D6
ARM
CYLINDER
DOZER
CYLINDER
TURNING
JOINT
TRAVEL MOTOR
SWING MOTOR
D2
C2
D1
C1
D4
C4
Pa21
Pa20
P04
Pc5
Pd5
Pd6
Pc6
When the boom up and bucket functions are operated simultaneously, each spool in the main
control valve is moved to the functional position by the pilot oil pressure from the remote control
valve.
The oil from the A1 pump flows into the boom cylinders through the boom 2 spool in the left control
valve. The oil from the A2 pump flows into the boom cylinders and bucket cylinder through the boom
1 spool, bucket spool and the parallel and confluence oil passage in the right control valve.
Also, when the boom up and bucket in functions are operated simultaneously, the boom up
operation preference function is operated by the pilot pressure P04 and then the bucket spool
transfers in the half stroke not full stroke (refer to page 2-33). Therefore, the most of pressurized oil
flows into boom 1 spool than the bucket spool to make the boom up operation more preferential.
The boom and bucket are operated.
9. COMBINED BOOM UP AND BUCKET OPERATION
130ZF3HC32
Summary of Contents for HX130 LCR
Page 11: ...1 1 SECTION 1 GENERAL Group 1 Safety Hints 1 1 Group 2 Specifications 1 10 ...
Page 174: ...4 5 MEMORANDUM HYUNDAI HEAVY INDUSTRIES CO LTD CONSTRUCTION EQUIPMENT DIV ...
Page 536: ...8 108 125LCR8TM30 Turn casing 1 upside down and remove oil seal 3 using jig 29 ...
Page 566: ...8 138 Remove lock nut 22 and then boot 23 14 36078RL14 2507ARL10 ...