Sakai R2-4, Shop Manual

Page: 69 / 234

4-009
HYDRAULIC SYSTEMS
(1) Propulsion pump
(1-1) Charge pressure gauge port (After oil filter) [PCV] : 9/16-18UNF
(1-2) Charge pressure gauge port (Before oil filter) : 9/16-18UNF
(1-3) Servo pressure gauge port [PNC] : 9/16-18UNF
(1-4) Drain port [PD1] : 1 1/16-12UN
(1-5) Servo pressure gauge port [PND] : 9/16-18UNF
(1-6) Port B (Reverse) [PB] : 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 pressure gauge port : 9/16-18UNF
(1-11) Charge supply port [PCS] : 1 5/16-12UN
(1-12) Drain port [PD3] : 1 1/16-12UN
(1-13) Drain port [PD2] : 1 1/16-12UN
(1-14) Port A (Forward) [PA] : SAE 1″
(1-15) Multi function valve (Port B)
(1-16) 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) Suction port [SCS] :
φ
32
(2-2) Discharge port [SC1] : G1/2
(2-3) Discharge port [SC2] : G1/2
Specifications
Displacement (2-2) • : 24.9 cm
3
/rev ( 1.52 cu.in./rev )
(2-3 ) : 16.2 cm
3
/rev ( 0.99 cu.in./rev )
Allowable pump case pressure • : 0.3 MPa ( 44 psi ) or less
Pump assembly weight • : 61.5 kg ( 136 lbs. )