Komatsu PC200-8M0 Shop Manual page 1099

500 Hydraulic system
Disassembly and assembly of work equipment PPC valve
a When installing joint (12) to body (1), apply
LOCTITE as shown below.
1) When installing the joint, apply 1 drop
(approx. 0.02 g) of LOCTITE (No. 262)
each to 2 places of the female screw (A)
of the body. Before installing the joint,
thoroughly degrease and dry its male
screw and the female screw of the body
with DRYSOL.
2) Drop LOCTITE to the following positions.
2
Female screw (A) of body:
3
Joint (12): 39 – 49 Nm {4 – 5 kgm}
a Apply grease (G2-LI) to the sliding parts of joint
(12) and contact surfaces of disc (13) and pis-
ton (8).
2
Quantity of grease (G2-LI)
The sliding portions of the joint (J portion):
Apply grease (G2-LI) 7 – 10 ml to entire cir-
cumference.
The sliding portions of the joint (P portion):
Apply gear oil 0.2 – 0.4 ml to the sliding
portions (4 places) between the joint and
pin.
Contact surfaces of disc and piston:
a When assembling disc (13), adjust it so that
the end play of the lever will be 0.5 – 3 mm at
200 mm from the center of revolution.
a See Testing and adjusting, "Adjusting play
of work equipment and swing PPC valve".
a Tighten nut (14) to the following tightening
torque.
3
Nut (14): 69 – 88 Nm {7 – 9 kgm}
PC200, 200LC, 220, 220LC-8M0
LOCTITE No. 262
0.3 – 0.8 cc/place
SEN06146-00
25
50-500