Komatsu PC88MR-10 Shop Manual page 1157

Assembly
(PC138-DTBP-710-K-00-A)
1. Assembly of yoke and piston assembly
1) Install wear ring (16) to yoke and piston (13).
2) Install U-packing (15) and fix it with snap ring
(14).
2. Assembly of recoil spring assembly
1) By using tool [1], press-fit bushing (12) to
cylinder (9).
2) By using tool L3, press-fit dust seal (11) to
cylinder (9).
PC88MR-10
50 Disassembly and assembly
2) Slowly apply hydraulic pressure to compress
the spring and then tighten nut (6).
a Compress the spring until the nut is
loose.
a Slowly release hydraulic pressure to
relieve tension of the spring.
3) Remove pilot (8) and spring (7).
4) Remove snap ring (10), dust seal (11), and
bushing (12) from cylinder (9).
4. Disassembly of yoke and piston assembly
1) Remove snap ring (14) to remove U-packing
(15).
2) Remove wear ring (16) from yoke and piston
(13).
3) Install cylinder (9) and pilot (8) to spring (7)
and set them to tool L2.
4) Apply hydraulic pressure slowly to compress
the spring and to tighten nut (6) so that the
installed length of the spring becomes
dimension "a".
Undercarriage and frame
50-129