Maintenance and Adjustment
68
410/420/430 - 001 8903 U1
UZEL
Fuel filter
Change the fuel filter element every 500 hours.
1. Place a suitable container below the fuel filter
assembly to retain spilled fuel oil. Clean the outside
of the filter assembly.
2. Open the drain tap (1, Fig. 88) at the bottom of
the filter casing to drain the fuel from the filter.
3. Use a strap wrench to loosen the filter casing.
Remove the casing and element from the fuel filter
head.
4. To remove the filter element from the casing; press
down on the filter element (1, Fig. 89) against the
spring pressure and rotate the element to the left to
release it from the filter casing .
5. Put the new filter element inside the casing and
press the element down against the spring pressure.
Rotate the element to the right to lock the element
into the casing
6. Fit a new seal (3, Fig. 89) to the casing and lightly
lubricate the seal face with clean fuel oil.
7. Check that the thread (2, Fig. 89) on the inside of
the element is not damaged.
8. Fit the filter assembly to the filter head and tighten
by hand until the filter assembly contacts the filter
head. Tighten the assembly a further 1/8 of a turn
by hand. Do not use a strap wrench.
9. Close the drain tap (1, Fig. 88) and remove the
container.
Removing air from the fuel system
If at any time air enters the fuel system, either due
to fuel system servicing, running out of fuel, tractor
standing idle for a considerable time or difficulty with
starting, the following procedure must be used to
remove air from the system:
NOTE: If air removal temporarily eliminates the
problem, but it occurs again, you must fully check
and test all fuel lines and connections. Loose fuel
connections and gasket surfaces, or damaged fuel
lines, can allow air to enter the system without showing
any apparent leakage.
1. Remove the cover for the fuel injectors (Fig. 90).
Refer to the Disassembly and assembly Manual.
2. Turn the key switch to the RUN position. Leave
the key switch in the RUN position for three minutes.
3. Turn the key switch to the OFF position.
NOTE: Damage to the fuel injection pump, to the
battery, and to the starter motor can occur if the
starter motor is used excessively to purge the air
from the fuel system.
4. Loosen the flare nuts ( 1 ) for the high pressure
fuel lines on all of the fuel injectors.
IMPORTANT: DO NOT crank the engine continuously
for more than 30 seconds. Allow the starting motor
to cool for two minutes before cranking the engine
again.
5. Observe the connection at the flare nut. Operate
the starting motor and crank the engine until the fuel
is free of air.
6. Tighten the flare nuts ( 1 ) to a torque of 30 Nm.
7. The engine is now ready to start. Operate the
engine at low idle for a minimum of five minutes
immediately after air has been removed from the
fuel system.
NOTE: Running the engine for this period of time will
help ensure that the pump is completely free of air.
Fig. 88
Fig. 89
Fig. 90
Valve tip clearances
The valve tip clearances should be checked by your
Massey Ferguson Dealer every 1500 hours.
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