KOMATSU LTD. — ASSEMBLY

ASSEMBLY 13) Align the tool center with plug hole center and push the tool gently until click sound is noticed. # A click sound is noticed when wedge ring slides tool off and fit on the pin. Size of protruded center of installation tool for large and small plug side are different. 14) Do same thing on the other side. 15) Set secondary ring pushing tool (R9) on both side, and push rings in the pin groove completely with maximum press force (P3) . 16) Check sealing performance Remove the air from inside the pin through small plug hole using vacuum pump (R4) at the vacuum of 680 - 710 mmHg (91-95 kPa) for 5 seconds. - 24 -