Preparing The Engine For A Long Period Of Inactivity - Komatsu WB93S-5 F50003 Operation & Maintenance Manual

LONG PERIODS OF INACTIVITY

3.14.2 PREPARING THE ENGINE FOR A LONG PERIOD OF INACTIVITY

NOTE
These operations must be carried out only if the engine is going to remain unused for more than 1 month.
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The first two operations must be carried out only on engines that have already run for more than 200 hours.
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1 - Drain the oil from the oil pan and fill it with washing oil FIAT L35.
2 - Start the engine and let it idle for 15 minutes.
Stop the engine and drain the oil.
3 - Fill the oil pan to the MIN. level with SAE 30 oil or with oil corresponding to the MIL - 2160B – type 2
specifications.
4 - Empty the fuel filters, disconnect the fuel pump intake pipe and connect it to an outside tank filled with CBF
(ISO 4113) oil.
5 - Start the engine and let it run at 800–1000 rpm for 15 minutes.
At this point, use a syringe to slowly spray 40 g of SAE30 oil or of an oil corresponding to the MIL - 2160B -
type 2 specifications into the suction manifold (taking approximately 10 seconds).
6 - Stop the engine and drain the oil from the oil pan.
NOTE
Recovered oil can be used again, for other two or three times, when preparing the engine for a long period of
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inactivity.
7 - Loosen the alternator, fan and coolant pump belts.
8 - Reconnect the fuel pump intake pipe to the fuel tank.
9 - Seal the exhaust pipe and all the intake and breather openings with adhesive tape and vynil bags.
10 - Position a sign with the clear writing "NO ENGINE OIL" on the steering wheel and on the engine.
IMPORTANT
These operations must be repeated every 6 months.
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3.14.3 MAINTENANCE DURING A PERIOD OF INACTIVITY
NOTE
These operations must be carried out once a month.
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1 - Recharge the battery and install it on the machine.
2 - Remove the seals from tank, exhaust pipe and breather outlets.
3 - Check the tyre pressure and remove the support blocks from under the machine.
4 - Start the engine and let it idle for 15 minutes.
5 - While warming the engine, remove the protection grease from the exposed rods of the hydraulic cylinders.
6 - Before moving the machine, make sure that the instruments, warning lights, lights, direction indicators,
windshield wipers and stop lights function correctly.
7 - As soon as possible, warm the hydraulic cylinders by slowly lifting and extending all the equipment more than
once.
8 - Travel for short distances at low speed, applying the brakes every now and then to allow the braking surfaces
to settle down.
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