Komatsu Utility 395F6001, Operation & Maintenance Manual

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MAINTENANCE PLAN
214
4.7.8 MAINTENANCE EVERY 500 HOURS OF OPERATION OR EVERY 6
MONTHS
• Carry out the following operations together with those to be performed every 50, 100 and 250 HOURS.
4.7.8.a CHANGING THE FUEL FILTER
DANGER
• Change the filtering element after work, when the engine has cooled down to 40–45°C.
• During these operations some fuel may be spilled; clean the dirty areas immediately, in order to prevent
any risk of slipping or fire.
• Filters are considered special waste and must be collected and disposed of in accordance with the anti-
pollution regulations in force.
The fuel filter and the fuel pump can be reached after opening the engine hood (see «3.5.1 ENGINE HOOD»).
FUEL FILTER
1 - Drain the fuel by loosening the plug (1).
2 - Clean the external surfaces of the unit and then unscrew the
old filter (2) using the special wrench provided, then discard
the filter.
3 - Clean the inside of the head (3).
4 - Lubricate the gasket of the new filter and tighten until it rests
against the gasket.
5 - Give another half turn by hand.
6 - Bleed the fuel supply circuit.
BLEEDING THE CIRCUIT
After filling the tank, proceed as follows:
1 - Turn the ignition key to position “
I ”.
2 - Loosen the bleeder screw (4) on the filter casing head (3).
3 - Operate the fuel pump (5) and keep it running until no more
air can be observed in the fuel that flows out of the filter head
(3).
Tighten the bleeder valve (4).
4 - Start the engine.
IMPORTANT
• If no fuel flows when the fuel pump lever is operated, give
the crankshaft 1 turn.
• Do not let the starter run for more than 15 seconds.
Wait at least 15 seconds before starting the engine again.
• If the engine starts regularly and then stops or works irreg-
ularly, check if there is air in the circuit;
if so, check the fuel filter, the water separator and the fuel
pump for leaks.
• When all the fuel in the tank has run out, bleed the circuit
by proceeding as described above.
RKAA1810
2
3
4
RKAA1850
1
RKAA1901
5
2