. MAINTENANCE SERVICE PROCEDURE CHECKING FUNCTION OF ACCUMULATOR For details of handling the accumulator, see Section "ACCUMULATOR (PAGE 2-35)". no grease on the bearing, so contact your Komatsu distributor for inspection or 4 - 62 PPC ACCUMULATOR If the engine stops with the work e quipment raised, and it is impossible to start the engine a gain, it is possible as an emergency measure to actuate the valve with the oil pressure stored in the accumulator and lower the work 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.
Carry out the check within 2 minu the machine is left with the en pressure will drop and it will be imp problem. If the work equipment stops while it is moving, the gas pressure in the accumulator has pr Please contact your Komatsu dis tributor to have the accumulator inspected. 000 hours or every 2 years. Replace the accumulator every 4 CHECK ALTERNATOR, STAR The brush may be worn or have repair.
If the engine is started frequently CHECK ENGINE VALVE CLE ARANCE, ADJUST As special tool is required for rem oving and adjusting the parts, request your Komatsu dis CLEAN AND CHECK TURBO CHARGER If there is carbon or oil sludge stuc k to the blower impeller, it will lower the performance of th e turbocharger or cause it to break, so ask your Komatsu distributor to carry out the cleaning. CHECK INJECTOR Check the exhaust gas color visu ally. If there is any problem in the exhaust gas color, pleas e contact your Komatsu distributor for inspection or replac ement. For details of the action to take if there is a proble m, see "ENGINE (PAGE 3-164)".