Sakai SV201-1, Shop Manual

Page: 68 / 238

4-010
HYDRAULIC SYSTEMS
2-2-2. Propulsion hydraulic motor (Front)
SV201-1-04002
Motor circuit diagram
2
1
3
4 5
8 9 10
11
12
6
4
1
2
5 3 6 7
7
(1) Port A [FA] : G3/4 (7) Drain port : G3/4
(2) Port B [FB] : G3/4 (8) Motor
(3) Hi-Lo change port [FC] : G1/4 (9) Reduction gear
(4) High pressure gauge port (For port A) : 7/16-20UNF (10) Filler/Drain port a : Rc 3/8
(5) High pressure gauge port (For port B) : 7/16-20UNF (11) Filler/Drain port b : Rc 3/8
(6) Drain port [FD] : G3/4 (12) Filler/Drain port c : Rc 3/8
Motor specifications
Displacement (Lo) • : 51 cm
3
/rev ( 3.1 cu.in./rev )
(Hi) : 34.8 cm 3 /rev ( 2.1 cu.in./rev )
Maximum working pressure • : 34.3 MPa ( 4,974 psi )
Allowable motor case pressure • : 0.3 MPa ( 43.5 psi ) or less
Speed change pressure (Lo) • : 0.3 MPa ( 43.5 psi ) or less
(Hi) : 1.5 to 5.0 MPa ( 218 to 725 psi )
Reduction gear specifications
Reduction ratio • : 1/24.362
Weight • : 86 kg ( 190 lbs. )