ATTACHMENTS AND OPTIONS SUPER LONG FRONT BOOM AND ARM CHECKS BEFORE STARTING 6 To maximise safety when using the super long front machine and to identify any damage to the equipment early, carry out the following checks before starting the machine: q Check daily for any loose nuts or bolts and tighten any that are found. q Check daily for any oil leakage. q Check all parts of the work equipment for any cracks, bending, buckling and play of the boom and arm. If any abnormality is found, contact your Komatsu distributor immediately. Locations for checking are shown below: Boom Arm Bucket Bucket link Adjustment Method of Throttling Check Valve Adjust the flow from a to b with no steps.
When the barrel of the valve is turned in the direction of the arrow, oil flow is reduced and the work equipment speed is lowered. Throttling Check Valve If this valve is adjusted while high pressure is applied to the hydraulic circuit, its seal may be broken and the oil will surge out. Barrel Accordingly, when adjusting this valve, stop the engine and release the pressure from the hydraulic circuit. High Flow Rate Low Flow Rate 6-37