Adjusting Play Of Work Equipment And Swing Ppc Valves - Komatsu PC88MR-10 Shop Manual

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.
a The play of the lever measured at a position of
200 mm from the pivot must be 0.5 to 3 mm.
Adjusting
(PC-PL28-270-K-00-A)
1. Remove boot (1).
2. Loosen lock nut (2) and tighten disc (3) until it
comes in contact with the heads of pistons (4) (4
pieces).
a At this time, do not move the pistons.
3. While fixing disc (3), tighten lock nut (2) to the
specified torque.
Locknut: 68 to 88 Nm (7 to 9 kgm)
4. Apply gear oil and grease (G2 L1) to the rocking
portions of the joint.
Apply gear oil and grease (G2 L1) to the rocking
portions of the joint.
(Portion J):
Apply grease (G2 L1) of 7 to 10 ml all around.
(Portion P):
Apply gear oil of 0.2 to 0.4 ml to the sliding parts
(4 places) of the joints and pins.
5. Install boot (1).
PC88MR-10
30 Testing and adjusting
Hydraulic system
(ALL-PL28-001-K-00-A)
30-57