Sakai SV540 Series, Shop Manual

Page: 72 / 306

4-011
HYDRAULIC SYSTEMS
2-2-4. Propulsion hydraulic motor (rear)
SV540-04003
n
min.
disp.
A
VIEW A
3
11
1 2
10 2
4
4
8
3
5
1 9
5
7
6
8
9
Motor circuit diagram
10
12
11
(1) Drain port : 7/ 8-14UNF (7) Loop flushing shuttle valve
(2) Servo pressure gauge port (min.) : 9/16-18UNF (8) Servo pressure gauge port (max.) : 9/16-18UNF
(3) Port A (Forward) [RPA] : 1” (DN25) (9) Speed sensor
(4) Drain port [RMD] : 7/ 8-14UNF (10) Gauge port (For Port B) [RMB] : 1 1/16-12UN
(5) Port B (Reverse) [RPB] : 1” (DN25) (11) Gauge port (For Port A) [RMA] : 1 1/16-12UN
(6) Solenoid valve (speed change) (12) Charge pressure relief valve
Motor specifications
Displacement (max.) • : 80.0 cm
3
/rev ( 4.88 cu.in./rev )
(min.) : 28.0 cm
3
/rev ( 1.71 cu.in./rev )
Charge relief valve pressure setting • : 2.0 MPa ( 290 psi )
Allowable motor case pressure • : 0.3 MPa ( 43.5 psi ) or less
Weight • : 34.8 kg ( 76.7 lbs. )