Maintenance Operation
Frequency - Observation
Check the engine performance
and the engine governor
Excessive engine noise.
Inspect the fan, the fan shroud,
and the fan clutch
Engine overheats, fan runs at high
speed constantly, excessive fan noise,
or fan wobble due to worn bearings.
Check for operation of ABS
warning lamp
At each engine start up.
Inspect the entire exhaust
system (including inlet pipe,
muffler, outlet pipe and all
exhaust clamps and fasteners)
for holes, leakage, breakage,
looseness and corrosive
damage
Excessive noise or the smell of fumes
is experienced.
Inspect the engine air
induction system (including the
air ducts and the air filter) for
loose fitting, damaged or
missing components
Excessive noise emanates from the
engine compartment.
Inspect the tires and check the
air pressure
(3)
Poor steering, wandering or excessive
tire wear.
Balance the wheels and the
tires
Vibration or abnormal tire wear
indicates imbalance.
Check the front end alignment
(3)
Poor steering, wandering or excessive
tire wear.
Check the transmission and
engine mountings
(2)
Hard shifting or excessive vibration.
Check and adjust transmission
controls
(2)
High effort to shift or noisy
transmission.
Check fuel pump pressure
Insufficient full-throttle power or
backfiring.
Clean radiator cap seal. Clean
and inspect the cap surface on
the radiator
When the cap does not hold pressure.
2008 F-650/750
(f67)
Supplement
USA
(fus)
Scheduled Maintenance Guide
238
