Ford F-650 2001 Owner's Manual page 168

Maintenance and care
Adding and replacing engine coolant-Caterpillar 3126 B engine
Refer to the engine operator's manual for additional engine cooling
system information.
FAN CLUTCHES
Your vehicle's cooling system is equipped with a viscous variable speed
fan clutch.
• The fan clutch helps control cooling, increase performance, improve
fuel economy and reduce noise.
• The fan clutch is controlled by bimetallic spring sensors. Do not
tamper with these sensors as this may change their calibration or keep
the fan clutch from operating at all.
Stay clear of the fan/fan area while the engine is running or
possible personal injury may occur.
CHECKING AND ADDING POWER STEERING FLUID
Checking power steering fluid level
Check the power steering fluid level using the following procedure. Refer
to the scheduled maintenance guide for the recommended service
intervals. If adding fluid is necessary, use only MERCON ATF.
1. Set the parking brake, shift into N
(Neutral) (automatic transmission)
or 1 (First) (manual transmission)
and turn the engine off.
2. Open the hood.
3. Clean the top of the power
steering fluid reservoir.
4. Remove the dipstick from the
reservoir and wipe the dipstick clean.
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