Valtra 6550 - Page 1268

1211
Model Code Page
90. Working hydraulics
1. 11. 2000
6000--8750 910 7D
1. 11. 1998
Hydraulic diagram, HiTech tractors
1. Oil reservoir
2. Suction strainer (125 m)
2a. Pressure---limiting valve 0,25 MPa (K41107---)
0,4 MPa (---K41106)
3. Twin gear pump (25+11 cm
3
/r, i=1,32)
8350Hi: 32+11 cm
3
/r.
4. Safety valve, 23 MPa, beside the pump
5. Pressure---test point (Valmet HPR)
6. Pressure filter (filtration grade: β10=75).
7. Priority valve
8. Pressure---test point (lubrication pressure)
9. Steering valve (OSPC 125LS, 125 cm
3
/r).
10. Steering ram
11. Steering valve, TwinTrac
12. Non---return valve, TwinTrac
13. End flange (pum p side)
--- p re s su re --- l im i t in g va l v e 1 9 M Pa
14. Valve block, 2/1--- action
(ou t --- h o l d --- i n )
15. Valve block, 2/1--- action
(f loa t --- ou t --- h o l d --- i n , f loa t p os . loc k ed )
16. End flange (tank side)
17. Valve block, option,
2 --- a c ti o n , act u a t or (o u t ---
f l oa t --- in , o ut --- i n pos . lo c k e d )
18. Valve block, option,
2 --- a c ti o n , ki c k --- ou t
(f loa t --- ou t --- h o l d --- i n , f loa t --- ou t --- in
pos. locked)
19. Control valve (BOSCH)
--- lifting ram safety valve 20 MPa
20. Lifting rams
21. Lifting ram+ transmission
breather (filtration grade: β10=75).
22. Brake valve (option)
23. Servo valve block
--- p re s su re --- l im i t in g va l v e 1 , 8 M Pa
--- s a f et y v a l v e 1,2 MPa
24. Differential lock
25. Pressure accumulator
26. PTO
27. 4WD multi---disc clutch
28. DPS
29. Shuttle lubrication
30. Bevel pinion shaft lubricatio n
31. Lubr. of pump drive gears
32. Input shaft lubrication
33. Differential lubrication
34. Lubrication of PTO shafts
35. Lubrication of PTO
36. Return oil connection, auxiliary hydraulics
37. Oil cooler
--- by---pass valve 0,35 MPa
--- switch, blocked filter
38. Oil flow control valve (Rexroth), (option)
38a.Intermediateflange(seeabove)
39. Control valve (TwnTrac)
40. Diff. lock, front axle
--- steering, press.---limiting valve 14 MPa
41. Low pressure circuit filter
42. Valve 0,3 Mpa (3 bar)
43. Return oil filter
44. Hand brake ram
45. Valve block (F, R, C3).
46. R---clutch of shuttle
46a. F---clutch of shuttle
47. Pressure---test point, PTO
48. Non---return valve 0,05 MPa (0,5 bar) (47/00---)
49. Lubricating oil flow into the F---clutch has been reduced
with a restriction, diam. 5 mm.