Clutch (If Equipped); Allison 3000 Series Push-Button Shifter; Automatic Transmission Operating Temperatures; Engaging The Clutch - Ford F-750 Owner's Manual

Driving

Allison 3000 Series push-button shifter

To shift the transmission into R
(Reverse) or D (Drive), depress the
brake pedal, then press R or D, then
release the brake pedal. To select a
lower range when in D (Drive),
press the down-arrow button. To
select a higher range when in D
(Drive), press the up-arrow button.
To place the transmission in N
(Neutral), press N.

Automatic transmission operating temperatures

Allison 2200/2500 – The sump/fluid reservoir temperatures should not
exceed 250°F (120°C). The converter temperature should not exceed
300°F (144°C).

CLUTCH (IF EQUIPPED)

Do not ride or slip the clutch as this will cause unnecessary heat and
wear. Maintain the specified clutch adjustment to prolong its life and
regularly inspect the clutch control linkage for tightness. Refer to the
Scheduled Maintenance Guide chapter for other maintenance
information. When adjustment of the clutch is necessary, it is very
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.
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2007 F-650/750 (f67)
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