New Holland T4.105F, Operator'S Manual

Page: 187 / 248

7 - MAINTENANCE
Fuel filter
T4.75F — T4.85F
NOTICE: Before loosening or removing any components of the injection system carefully clean the area around the
components involved in the maintenance work to prevent contaminating the system.
To change the filter, proceed as follows:
• Place a container under the filter
(1) ;
• Remove the retaining pin
(2) and disconnect the sen-
sor (3) ;
• Unscrew the drain plug
(4) at the base of the filter to
drain off the fuel;
• remove the filter cartridge
(1) ;
• lightly oil the seal, screw the new cartridge down into
contact with the support and tighten it by hand by 3/4
of a turn (
15 N·m );
• fit the sensor
(3) back on and secure it with the re-
taining pin (2) .
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After changing the filter cartridge, it is necessary to
bleed the fuel system as follows:
• press the two retaining buttons
(5) (one is behind the
union) and disconnect the pipe from the filter head;
• pump the primer lever
(6) until the fuel coming out of
the filter contains no air bubbles;
• refit the pipe by simply pushing it downwards to lock
it on the head of the filter.
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