. MAINTENANCE SERVICE PROCEDURE CHECKING FUNCTION OF ACCUMULATOR For details of handling the accumulator, see Section "HANDLING ACCUMULATOR AND GAS SPRING (PAGE 2-42)". equipment to the ground. 1. Apply the parking brake. 2. Raise the work equipment to the maximum height, then operate the lift arm control lever to HOLD position (b). 3. Stop the engine. 4. Leave the work equipment lock lever in the FREE position. 5. Check that the area around the machine is safe, then operate the lift arm control lever to FLOAT position (d) and lower the work equipment to a point 1m above the ground. 6.
When the lift arm comes to the 1m position, return the lift arm control lever to LOWER position (c), and lower the work equipment slowly to the ground. REMARK Carry out the check within 2 minutes after stopping the engine. If the machine is left with the engine stopped, the accumulator pressure will drop and it will be impossible to check the cause of the problem.
4 - 64 PPC ACCUMULATOR If the engine stops with the work equipment raised, and it is impossible to start the engine again, it is possible as an emergency measure to actuate work If the work equipment stops whil e it is moving, the gas pressure in the accumulator has p Please contact your Komatsu dis Replace the accumulator every 4 CHECK ALTERNATOR Contact your Komatsu distributor If the engine is started frequently , have this inspection carried out every CHECK ENGINE VALVE CLE ARANCE, ADJUST As special tool is required for rem oving and adjusting the parts, request your Komatsu di stributor for service CHECK VIBRATION DAMPE R r peeling in the outside surface of the rubber.
Check that there are no cracks o r peeling in the outside surface of the If any cracks or peeling are foun d, contact your Komatsu distributor to have the parts rep