Komatsu 80001 - Page 920

SEN04129-02 50 Disassembly and assembly
10 PC130-8
Assembly
1. Assembly of yoke piston assembly
1) Assemble wear ring (16) to yoke piston
(13).
2) Assemble U-packing (15) and secure with
snap ring (14).
2. Assembly of recoil spring assembly
1) Using tool L4, press fit bush (12) to cylin-
der (9).
2) Using tool L3, press fit dust seal (11) to
cylinder (9).
3) Assemble cylinder (9) and pilot (8) to
spring (7), and set to tool L2.
4) Apply hydraulic pressure slowly to com-
press spring, and tighten nut (6) so that
installed length of spring is dimension
(a).
a Installed length (a) of spring: 390 mm
5) Remove recoil spring assembly (4) from
tool L2.
3. Assemble yoke piston assembly (5) to recoil
spring assembly (4).
2 Yoke piston sliding portion wear ring :
Grease (G2-LI)
4. Fit valve (3) and seat (2), and secure with lock
plate (1).
a Install the valve so that the direction of the
fitting (17) is to the outside.
5. Fill inside of cylinder with a approximately 120
cc of grease.
2 Inside cylinder: Grease (G2-LI)