2-41
OPERATION OF MAIN RELIEF VALVE
The pressurized oil passes through the orifice (A) of the plunger is filled up in chamber A of the
inside space, and seats the plunger against the housing securely.
11)
(1)
When the pressure at (P) becomes equal to the set pressure of the spring the hydraulic oil
passes through the piston (A) pushes open the poppet and flows to tank passage (T) through the
plunger internal passage, periphery orifice A, chamber A, periphery orifice B and the hole (E).
(2)
Opening the poppet causes the pressure in chamber A to fall and the plunger to open. As the
result the pressurized oil at port P runs into tank passage (T).
(3)
Chamber A Piston A
Piston B
Housing
Socket
P
Spring
Orifice A
Plunger
Hole A
Poppet
Tank
passage
T
14W92MC36
P
Periphery orifice B
Hole E
Piston A
Poppet
Spring
Tank
passage
T
14W92MC37
P
Plunger
Poppet
Tank
passage
T
14W92MC38
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...