. MAINTENANCE SERVICE PROCEDURE CHECKING FOR LOOSENESS OF HIGH-PRESSURE CLAMP, HARDENING OF RUBBER NOTICE 4 - 88 Check visually and touch by hand to check that there are no loose mounting bolts fo r high-pressure piping clamps (1) to (20) in the diagram an d no hardening of any rubber parts. If any problem is fou nd, the part must be replaced. In this case, ask your Koma tsu distributor to perform If the engine continues to be us ed when there are loose bolts, hardened rubber, or missing pa rts, there is danger of damage or breakage occurring due to vib high-pressure piping clamps ar