Propulsion Hydraulic Motor (R) - Sakai R2-4 Shop Manual

HYDRAULIC SYSTEMS

2-2-3. Propulsion hydraulic motor (R)

1
3 4
7
(1) Port B (Reverse)
(2) Port A (Forward)
(3) Drain port
(4) High pressure gauge port (For port B)
(5) High pressure gauge port (For port A)
(6) Parking brake pilot port
Motor specifications
• Displacement (max.)
(min.)
• Charge relief valve pressure setting
• Brake release pressure
• Allowable motor case pressure
Reduction gear specifications
• Reduction ratio
• Weight
4-012
2
8
5 6
5
2
1
10 4 7
Motor circuit diagram
[RMB] : G3/4 (7) Speed change port
[RMA] : G3/4 (8) Shift valve assembly
[RMD] : G1/2 (9) Motor
: G1/4 (10) Reduction gear
: G1/4 (11) Plug
[RMP] : G1/4 (12) Charge pressure gauge port
: 75.0 cm
: 28.0 cm
: 2.4 MPa
: 1.3 to 1.7 MPa
: 0.3 MPa
: 1:39.000
: 193 kg
9 10
12
6
Hi
Lo
3
3
/rev ( 4.58 cu.in./rev )
3
/rev ( 1.71 cu.in./rev )
( 348 psi
( 189 to 247 psi
( 44 psi
( 425 lbs.
11
R2H-2-04004
[RMS] : G1/4
: 7/8-14UNF
: G1/8
)
)
) or less
)