2-36
ARM OPERATION
ARM IN OPERATION
During arm in operation, the pilot secondary pressure from the RCV is supplied to the port Pc40
of spring opposite side and shifts arm 1 spool in the right direction.
The bypass passage is shut off by the movement of the arm 1 spool and the hydraulic oil from the
pump A1 flows into the arm cylinder head side through P2 parallel passage, the load check valve,
bridge passage and the port C4.
At same time, the pilot secondary pressure from the RCV is supplied to the port Pb3 of spring
opposite side and shifts arm 2 spool in the right direction. The bypass passage is shut off by the
movement of the arm 2 spool and the hydraulic fluid from the pump A2 flows into the arm
summation passage through P1 parallel passage, the check valve, the arm 2 spool and the boom
2 spool. Then it entered the arm cylinder head side with hydraulic fluid from arm 1 spool.
7)
(1)
C4
P2 Parallel passage
Piston C
Selector spool
Arm regeneration
cut pilot pressure
Arm regeneration
& breaker spool
P2 Bypass passage
Arm 1 spool
Arm summation passage
D4
Arm summation passage
Boom 2 spool
P1 Bypass passage
P1 Parallel passage
Arm 2 spool
Arm in pilot
pressure
From RCV
Arm in
pilot pressure
Pc40
Pb4
Pc42
Pb3
Load check
Tank passage
125LCR2MC21
P1 Parallel passage
P1 Bypass passage
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 ...