2-32
BUCKET IN OPERATION WITH BOOM OPERATION (TYPE 1)
When combined operation, mostly same as previous page but the fluid from P1 bypass passage
is empty.
So only the fluid from P1 parallel passage is supplied to the bucket cylinder. Also, parallel
passage is installed the orifice of bucket logic valve for supplying the fluid from pump A2 to the
boom operation prior to the bucket operation. In case of the bucket out operation with boom
operation, operation is similar.
Also the boom up operation, the boom up pilot pressure is supplied the pilot port (P04) of bucket
spool stroke limit and the piston is shifted to the right and then the bucket in spool stroke is limited
and the open of the bucket in spool is reduced.
Accordingly, the oil of the bucket in spool is reduced and the boom speed up.
(3)
B5
A5
Tank passage
From RCV
Bucket spool
Orifice
P1 Parallel passage
Pa5
Bucket logic valve
P04
Piston
140L2MC29
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...