Hyundai HX145LCR Manual page 68

Low tilting angle (low flow) command preferential function
As mentioned above, flow control and horsepower control tilting angle commands are
transmitted to the feedback lever and spool via the large-hole sections (C & F) of levers 1 and 2.
However, since sections C and F have the pins ( 4) protruding from the large hole ( 8), only
the lever lessening the tilting angle contacts the pin (897) ; the hole ( 8) in the lever of a larger
tilting angle command is freed without contacting the pin (897). Such a mechanical selection
method permits preference of the lower tilting angle command of the flow control and horsepower
control.
Adjustment of input horsepower
Since the regulator is of total cumulative horsepower type, adjust the adjusting screws of both
the front and rear pumps, when changing the horsepower set values. The pressure change
values by adjustment are based on two pumps pressurized at the same time, and the values will
be doubled when only one pump is loaded.
a.
Adjustment of outer spring
Adjust it by loosening the hexagon nut
(630) and by tightening (or loosening)
the adjusting screw C (628).
Tightening the screw shifts the control
chart to the right and increases the
input horsepower as shown in the
figure. Since turning the adjusting
screw C (628) by N turns changes the
setting of the inner spring (626), return
the adjusting stem C (627) by N A
turns at first. (A=1.48)
Adjusting value
Adjustment of input horsepower
Speed
Tightening Compensa-
amount of ting control
adjusting
screw (C)
(628)
(Turn)
(min )
-1
2000 +1/4
Input torque
change
starting amount
pressure
change
amount
(kgf m)
(kgf/cm )
2
+15.9 +2.7
2-16
626 625 630
Delivery pressure, (P +P
1
628
802 627
140Z92RG07
)
2