Sakai R2H-2, Shop Manual

Page: 38 / 151

4-008
HYDRAULIC SYSTEMS
(1) Propulsion pump
(1-1) Charge pressure gauge port (After oil filter) : 9/16-18UNF
(1-2) Charge pressure gauge port (Before oil filter) : 9/16-18UNF
(1-3) Servo pressure gauge port [SG4] : 9/16-18UNF
(1-4) Drain port [PD1] : 1 1/16-12UN
(1-5) Servo pressure gauge port [SG5] : 9/16-18UNF
(1-6) Port B (Reverse) [B] : SAE 1″
(1-7) Charge relief valve
(1-8) High pressure gauge port (For Port B) : 9/16-18UNF
(1-9) High pressure gauge port (For Port A) : 9/16-18UNF
(1-10) Charge gauge port : 9/16-18UNF
(1-11) Pilot charge pressure port [PC1] : 9/16-18UNF
(1-12) Speed change solenoid
(1-13) Parking brake solenoid
(1-14) Servo bypass solenoid
(1-15) Pilot charge pressure port
[PC2]
: 9/16-18UNF
(1-16) Charge supply port [CSP] : 1 5/16-12UN
(1-17) Drain port [PDL] : 1 1/16-12UN
(1-18) Drain port [PDR] : 1 1/16-12UN
(1-19) Port A (Forward)
[A]
: SAE 1″
(1-20) Servo bypass solenoid port [SB4] : 9/16-18UNF
(1-21) Servo bypass solenoid port [SB3] : 9/16-18UNF
(1-22) Multi function valve (Port B)
(1-23) Multi function valve (Port A)
Specifications
• Displacement : 75 cm
3
/rev ( 4.58 cu.in./rev )
• Pressure limit pressure setting : 41.8 MPa ( 6,061 psi ) (at 1,800 min
-1
)
• Charge relief valve pressure setting : 2.4 MPa ( 348 psi ) (at 1,800 min
-1
)
(2) Steering • Charge pump
(2-1) Discharge port [PD] : G3/4
(2-2) Suction port [PS] : G1
Specifications
• Displacement : 24.9 cm 3 /rev ( 1.52 cu.in./rev )
• Allowable pump case pressure : 0.3 MPa ( 43.5 psi ) or less
• Pump assembly weight : 60 kg ( 132 lbs. )