Komatsu PC88MR-10 Shop Manual page 1158

50 Disassembly and assembly
Undercarriage and frame
a Standard installed length (a) of spring:
390 mm
5) Remove recoil spring assembly (4) from tool
L2.
3. Install yoke and piston assembly (5) to recoil
spring
assembly (4).
Sliding surface of yoke and piston,
wear ring:
Grease (G2-LI)
4. Apply valve (3) and seat (2) and fix them by
using lock plate (1).
a Install the valve so that grease fitting (17)
faces outward.
5. Fill the inside of the cylinder with approximately
120 cc of grease from the grease fitting.
Cylinder inside:
Grease (G2-LI)
50-130 PC88MR-10