Sakai SW300-1, Shop Manual

Page: 71 / 246

4-011
HYDRAULIC SYSTEMS
(1) Propulsion pump
(1-1) Port B (Reverse) [PB] : 1 1/16-12UN
(1-2) High pressure gauge port (For port B) : 9/16-18UNF
(1-3) Servo pressure gauge port : 9/16-18UNF
(1-4) Drain port [PD] : 1 1/16-12UN
(1-5) High pressure gauge port (For port A) : 9/16-18UNF
(1-6) Port A (Forward)
[PA]
: 1 1/16-12UN
(1-7) Servo pressure gauge port : 9/16-18UNF
(1-8) Brake release pressure port [PPR] : 9/16-18UNF
(1-9) Charge supply port [PC] : 3/4-16UNF
(1-10) Solenoid valve
(1-11) * High pressure relief and bypass valves
(1-12) * High pressure relief and bypass valves
(1-13)
Charge relief valve
(1-14) Drain port : 1 1/16-12UN
Speci fi cations
• Displacement : 28 cm
3
/rev ( 1.7 cu.in./rev )
• High pressure relief valve pressure setting : 34.5 MPa ( 5,003 psi ) (at 3.8 to 5.6 L/min)
• Charge relief valve pressure setting : 1.9
± 0.07
MPa ( 276
± 10.2
psi ) (at 20 L/min)
• Allowable pump case pressure : 0.25 MPa ( 36.3 psi )
• Weight : 34.5 kg ( 76.1 lbs. )
* : High pressure relief and bypass valves = S.C.R. (System Check Relief) valve for charge check and high pres-
sure relief and bypass valve.
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