Komatsu PC88MR-10 Shop Manual page 1161

50 Disassembly and assembly
Undercarriage and frame
7. Install O-ring (7) to shaft and collar assembly (6).
8. Install collar (3) to shaft (6), and install pin (2).
9. Fill the roller with oil, and tighten plug (12).
Track roller:
160 to 180 cc (G085W140)
PC88MR-10 50-133