Kalmar DCE80-100E - Page 201

DCE80-100E
Technical Handbook
Main hydraulics
Description
9
P.Group 70
TDCE01
04GB
Working hydraulics, supply
The hydraulic system is supplied from four different pumps.
Pump 18+19 is a double combination pump where one section is
a variable axial piston pump and the other section is a fixed ving
pump. The variable pump 18 feeds the side-lift and is equipped
with relief valve 18a which allows the pump to start without coun-
ter pressure.The ving pump 19 feeds the machine’s working
hydraulics over the valve block 54.
The valve block is equipped with accumulator charging valve,
pressure reducing valve for servo system, pressure limitiation
and priority valve for the steering circuit.
The priority valve ensures pressure to the steering system, the-
reafter servo pressure and that the rest flow is fed to tilt and lift.
Pump 20a + 20b is a double pump of the ving type, where pump
20a feeds lift and pump 20b feeds the cab tilt. (Cab tilt is extra
equipment)
The oil is cleaned by high pressure filters, one after each pump.
18a
19
18
20a
20b
23
23
23
51
31
13
12
17
16
54
Hydraulic system with separate side-lift hydraulics, feed machine hydraulics
Numreringen gemensam med
Hydraulschema A44866.0100
12. Huvudtryckbegränsningsventil LYFT
13. Huvudtryckbegränsningsventil TILT
16. Manöverventil LYFT
17. Manöverventil TILT
18. Variabel axialkolvpump, matning aggregat
18a. Tryckavalstningsventil
19. Vingpump, matning ackumulatorladdning
och TILT
20a. Vingpump, matning LYFT (Kugghjulspump
vid system utan hyttilt)
20b. Vingpump, matning hyttilt (Extra utrustning)
23. Högtrycksfilter
31. Hydraultank
51. Andningsfilter
53. Växlingsventil, hyttilt
54. Plint, matning aggregat, se vidare grupp 80
53