10-44
SK714-5 SK815-5 SK815-5 turbo
3.
OPERATION FOR EACH FUNCTION AND VALVE
Features
•
The small capacity gear pump keeps high speed movement because lift arm and the bucket circuit are connected
in a series circuit.
•
The control valve has built in self leveling function.
•
If loading pressure of bucket becomes beyond a certain value, the lift arm and the bucket circuits automatically chan-
ge to parallel circuit to keep strong digging force.
•
The lift arm, attachment and High-flow section are connected in a parallel circuit and it has pressure compensa-
tioning function each section.
•
During individual operations, attachment High-flow keep individual demand flow rate.
However during compound operations, they are divided in the proportion of 1 to 9 and keep High-flow section flow
rate. (SK815-5 and SK815-5 turbo has only Super-flow specification.)
Hydraulic circuit diagram and names of valves
RKS00751
Raise arm
Dump bucket
A4
B4
P1
P2
A3
B3
A2
B2
Pa3
Pa3
A1
B1
Pa2
Pa1
6
13
1
2
3
4
8
12
10
11
9
7
Pa1
Optional equipment
High-flow
Ls
Port
Bucket cylinder
5
Pa2
Curl bucket
Raise cylinder
Lower arm
11
Optional equipment
STRUCTURE AND FUNCTION
CLSS
1. Unload valve
2. Main relief valve
3. Pressure compensation valve (lift arm)
4. Pressure compensation valve (bucket)
5. Pressure compensation valve (attachment)
6. Pressure compensation valve (High - Flow)
7. Float valve
8. Leveling circulating valve
9. Combination circulating valve
10. Flow divider
11. Shuttle valve
12. Check valve (circulating circuit)
13. High - Flow joining spool
Содержание SK714-5
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