Komatsu PC20R-8 Shop Manual page 53

When engine is at low idling
. The LS set differential pressure of the LS valve is
taken as 7 bar (7 kg/cm
LS differential pressure DP
2
(7 kg/cm ), the pump swash plate angle moves in
the minimum direction. If the area of opening of
the control valve is further increased and LS differ-
ential pressure DP
LS
the pump swash plate angle is moved in the maxi-
mum direction. Even if the area of opening of the
control valve is the same, the LS set differential
pressure is lower than when the engine is running
at full throttle (even when the lever is operated to
the same halfway position), so the discharge flow
is reduced below the level when the engine is run-
ning at full throttle.
PC20R-8 PC27R-8
2
). In the area where the
is more than 7 bar
LS
goes below 7 bar (7 kg/cm
2
),
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