DCE80-100E
Technical Handbook
Main valve
Description
34
P.Group 70
TDCE01
04GB
Valve block
Several hydraulic functions are concentrated to a valve block
which is connected directly to the main valve. .
Valve block, main functions:
(Numbering is the same as in the Hydraulic Circuit Diagrams)
1. Accumulator charging valve
2. Pressure limiting valve, steering system
3. Differential valve, providing max. 11 bar difference between
the steering valve LS-signal and the pump pressure
4. Priority valve for the steering circuit
Provides 11 bar initial pressure in the main valve
Actuated by the steering valve LS-signal and ensures that
the steering circuit has sufficient supply
5. Pressure reducing valve for servo to control levers.
6. Relief valve, cooling circuit. Provides max. 1 bar, opens to
the reservoir at higher pressure in the cooling circuit.
.
KL1398
1
2
1. Main valve
2. Valve block
KL1834
A
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