Adjusting Play Of Work Equipment And Swing Ppc Valves - Komatsu ecot3 PC300LC-8 Shop Manual

30 Testing and adjusting
Adjusting play of work equipment
and swing PPC valves
a If the right and left work equipment levers have
large play, adjust them according to the following
procedure.
1. Remove the work equipment and swing PPC
valve assembly.
2. Remove boot (1).
3. Loosen locknut (2) and screw in disc (3) until it
contacts the heads of 4 pistons (4).
a Do not move the piston while doing this work.
4. Keep disc (3) in place and tighten locknut (2) to
the specified tightening torque.
3
Locknut: 69 - 88 Nm {7 - 9 kgm}
5. Install boot (1).
6. Install the work equipment and swing PPC valve
assembly.
PC300, 350-8
SEN02625-06
53