2004 Ford F250 Diesel Supplement 2nd Printing - Page 9

2004 Ford F250 Manual

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Instrumentation Air filter restriction gauge (if equipped) The restriction gauge, located on the upper housing of the air cleaner assembly, monitors the condition of the air filter element in two ways: • First, the colored indictor inside the gauge highlights the AA AIR FILTER REST percentage that the air filter element is clogged with dust or CHANGE FILTER 75% contaminants. Refer to 65% 50% Maintenance and Specifications section of this supplement. PUSH BUTTON RESET • Second, the gauge contains an electrical switch which illuminates a warning light on the instrument cluster when the air filter element is 100% clogged. Refer to the Engine air filter warning light in this section of the supplement. Check the air filter restriction gauge whenever the hood is raised to perform general engine maintenance at least every 12,000 km (7,500 miles). If the vehicle is operated in extremely dusty conditions, check the gauge at least every 800 km (500 miles), or two weeks, whichever comes first. 9

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Air filter restriction gauge (if equipped)
The restriction gauge, located on
the upper housing of the air cleaner
assembly, monitors the condition of
the air filter element in two ways:
•
First, the colored indictor inside
the gauge highlights the
percentage that the air filter
element is clogged with dust or
contaminants. Refer to
Maintenance and Specifications
section of this supplement.
•
Second, the gauge contains an
electrical switch which illuminates
a warning light on the instrument
cluster when the air filter element
is 100% clogged. Refer to the
Engine air filter
warning light in
this section of the supplement.
Check the air filter restriction gauge
whenever the hood is raised to
perform general engine maintenance at least every 12,000 km (7,500 miles).
If the vehicle is operated in extremely dusty conditions, check the gauge
at least every 800 km (500 miles), or two weeks, whichever comes first.
A
I
R
F
I
L
T
E
R
R
E
S
T
A
A
CHANGE FILTER
PUSH BUTTON RESET
75%
50%
65%
Instrumentation
9