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10 Structure, function and maintenance standard
Merge-divider valve
1. When flows from the pumps merge [if pilot pressure (PS) is OFF]
a On the BR380JG-1E0, pilot pressure (PS) is always ON and the flow is always divided.
1.
Main spool
2.
Spring
3.
LS spool
4.
Spring
Function
Merges pressurized oil (P1) and (P2) dis-
q
charged from the two pumps or divides (to
respective control valve group).
Merges and divides LS circuit pressure.
q
Operation
Pilot pressure (PS) is OFF, so main spool (1) is
q
pressed to the left by spring (2) and ports (E)
and (F) are interconnected.
Merges pressurized oil (P1) and (P2) dis-
q
charged from the two pumps at ports (E) and
(F) and sends to necessary control valve.
BR380JG-1E0
5.
LS circuit (if equipped 4 side)
6.
LS circuit (conveyor PAISE/LOWER side)
7.
LS circuit (conveyor PAISE/LOWER side)
8.
LS circuit (if equipped 4 side)
Since pilot pressure (PS) is OFF for LS spool
q
(3), it is pressed to the left by spring (4), and
ports (A) – (D) and ports (B) – (C) are intercon-
nected.
Forwards LS pressure led from respective con-
q
trol valve spools to LS circuits (5), (6), (7) and
(8) to all the pressure compensation valves.
SEN01352-00
1
29
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Troubleshooting
