Adjust Work Equipment And Swing Ppc Valves; Method For Adjusting Play Of Work Equipment And Swing Ppc Valves - Komatsu PC500LC-10R Shop Manual

30 TESTING AND ADJUSTING

ADJUST WORK EQUIPMENT AND SWING PPC VALVES

If the right and left work equipment levers have large play, adjust them according to the following procedure.
Play at the lever end is 0.5 to 3 mm at the position of 200 mm away from the pivot of lever.
For adjusting the play of work equipment PPC valve and swing PPC valve to perform troubleshooting, refer to
this section.
METHOD FOR ADJUSTING PLAY OF WORK EQUIPMENT AND SWING PPC
VALVES
1.
Remove the boot (1).
2.
Loosen the locknut (2) and tighten it until disc (3) touches
the heads of pistons (4) (4 pieces).
REMARK
Do not move the piston when tightening.
3.
Fix the position of disc (3) and tighten lock nut (2) to the
specified torque.
3
Lock nut (2):
68 to 88 Nm {7 to 9 kgm}
4.
Apply gear oil and grease to the rocking portion of the
joint.
2
Rocking portion of joint:
Grease (G2-LI)
REMARK
• Apply 7 to10 mℓ of grease to all periphery (a) of the pin.
• Apply 0.2 to 0.4 mℓ of gear oil to sliding portions (b) of
joint and pin (4 places).
5.
Install the boot (1).
PC500LC-10R
ADJUST WORK EQUIPMENT AND SWING PPC VALVES
30-93