Komatsu PC88MR-10 Shop Manual page 404

30 Testing and adjusting
Hydraulic system
1. While fixing adjustment screw (4), loosen lock
nut (5).
2. Turn adjustment screw (4) to adjust the
differential pressure.
a Rotate the adjustment screw:
turned clockwise, the pressure is
increased.
turned counterclockwise, the pressure is
decreased.
a Quantity of pressure adjustment (LS
differential pressure) per turn of adjustment
screw:
1.27 MPa {13 kg/cm
3. While fixing adjustment screw (4), tighten lock
nut (5).
Lock nut:
29.4 to 39.2 Nm {3 to 4 kgm}
4. After finishing the adjustment, check the LS
differential pressure again according to the
above procedure.
30-54
2 }
PC88MR-10