Ford 2002 F650 Owner's Manual page 234

General Maintenance Information
scheduled intervals because they are considered essential to the life and
performance of your vehicle. Ford recommends that you perform
maintenance on all designated items to achieve best vehicle operation.
Scheduled maintenance beyond 160 930 km (100 000 miles) should be
continued as before 160 930 km (100 000 miles).
SPECIAL OPERATING CONDITIONS
If your driving habits frequently include one or more the following
conditions:
• Short trips of less than 16 km (ten miles) when outside temperatures
remain below freezing.
• Operating during hot weather in stop-and-go "rush hour" traffic.
• Operating in severe dust conditions.
• Extensive idling, or low speed operation such as door-to-door delivery
service.
• High speed operation with a fully loaded vehicle (max. GVW).
• Snowplowing.
Perform the following:
• Change engine oil and oil filter every three months, 8 000 km (5 000
miles) or 125 hours of engine service.
• If operating in severe dust conditions, replace the air cleaner filter
more often than regular intervals as determined by the air filter
restriction indicator. Make sure that the air filter restriction indicator
is in good working order.
• Lube the manual transmission and the rear axle every 48 279 km
(30 000 miles) or 6 months, whichever comes first.
• See the Allison, Cummins and Caterpillar Operator's Manual.
AIR BRAKE ADJUSTMENT
Failure to maintain proper air brake adjustment can result in
reduction or loss of braking ability.
Air brake inspection and adjustment should be performed by a qualified
service technician in accordance with the instructions in the Ford Truck
Service Manual.
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