Komatsu PC20R-8 Shop Manual page 93

1. Valve plate
2. Piston
3. Shoe
4. Swash plate
5. Piston spring
6. Piston
7. Cylinder
8. Center spring
9. Plug
10. Orifice
11. Check valve
12. Check valve spring
13. Orifice
14. Orifice
15. Counterbalance valve spring
16. Spool return spring
17. Plug
18. Spool return spring (travel increment)
19. Counterbalance valve spring (travel increment)
PC20R-8 PC27R-8
19
Section B - B
Sezione B - B
17
18
R.H. motor
a. PS Port - From swivel joint (g Port)
b. T1 Port - Not used
c. P1 Port - From swivel joint (a Port)
d. P2 Port - From swivel joint (c Port)
e. T2 Port - From swivel joint (h Port)
L.H. motor
a. PS Port - From swivel joint (g Port)
b. T1 Port - From swivel joint (h Port)
c. P1 Port - From swivel joint (d Port)
d. P2 Port - From swivel joint (b Port)
e. T2 Port - Not used
SPECIFICATIONS
Nominal pressure: 205.8 bar (210 kg/cm
Displacement:
. High speed: 9.00 cm
. Low speed: 18.00 cm
Swing speed:
. High speed: PC20R-8: 2645 rpm
PC27R-8: 3275 rpm
. Low speed PC20R-8: 1323 rpm
PC27R-8: 1637 rpm
RKP01390
2
)
3
/rev.
3
/rev.
10-75