Ford 2007 F-650 Owner's Manual page 125

Driving
important that the work be performed properly or early clutch failure
may result and a costly clutch overhaul may become necessary. Clutch
work should only be performed by a qualified technician.
Engaging the clutch
• Always start in the proper gear. An empty vehicle can start in a
higher gear than a fully loaded vehicle. Starting in too high a gear can
cause clutch slippage and excessive heat and wear on the clutch. A
gear that will start the vehicle moving at idle speed is the correct gear.
If the engine has to be revved to get the vehicle going, the gear
selection is too high.
• Do not shift until the vehicle has reached the proper speed.
Upshifting before the vehicle has reached the proper speed can cause
clutch slippage and excessive heat and wear on the clutch.
• Never hold a vehicle on a grade with the clutch. This will cause
the clutch to slip and can actually burn up the clutch.
• Never coast with the clutch disengaged. The high RPM
(sometimes over 10,000), can actually burst the facing material of the
clutch.
• Never engage the clutch while coasting. Re-engaging the clutch
after coasting may not only cause a great shock to the clutch, but the
whole drivetrain. Internal engine damage and/or clutch and flywheel
failure can result from this.
If your vehicle's transmission is equipped with a ceramic clutch, you
must start the vehicle moving in first gear and engage the clutch before
pressing the accelerator at idle. Also, don't try to slip the clutch by
raising engine RPM and riding or feathering the clutch pedal since the
vehicle will experience erratic engagement. Erratic engagement can
cause the engine stalling and potential serious damage to the vehicle's
driveline components.
Clutch brake (vehicles equipped with a non-synchronized
transmission) - Vehicle stationary
A clutch brake is used to stop the transmission input shaft rotation so
that the initial 1 (First) or R (Reverse) gear selection can be
accomplished when the vehicle is stationary and the engine is running at
idle speed. Clutch brake application occurs in the last inch (25 mm) of
clutch pedal travel.
When using the clutch brake, fully depress the clutch pedal and shift the
transmission into 1 (First) or R (Reverse). If the transmission won't go
124
2007 F-650/750 (f67)
Supplement
USA (fus)