FORD 2006 F-550 v.1 - Manual (Page 180)

Maximum downshift speeds 1
6-speed transmission
Shift from: Transfer case position (if equipped) 2
2H or 4H 4L
D (Overdrive) - 4 45 mph (72 km/h) 16 mph (26 km/h)
4-3 35 mph (56 km/h) 12 mph (19 km/h)
3-2 20 mph (32 km/h) 8 mph (13 km/h)
2-1 5 mph (8 km/h) 2 mph (3 km/h)
1-LO Only shift to LO when at a stop.
1 Use 2H or 4H for 4WD equipped vehicles.
2 Downshift at lower speeds when driving on slippery surfaces.
Reverse
1. Make sure that your vehicle is at a complete stop before you shift into
R (Reverse). Failure to do so may damage the transmission.
2. Move the gearshift lever into the neutral position and wait at least
three seconds before shifting into R (Reverse).
• The gearshift lever can only be moved into R (Reverse) by moving it
from left of 3 (Third) and 4 (Fourth) before shifting into R (Reverse).
This is a lockout feature that protects the transmission from
accidentally being shifted into R (Reverse) from
(Overdrive).
Parking your vehicle
1. Apply the brake and shift into the neutral position.
2. Fully apply the parking brake, then shift into 1 (First).
3. Turn the ignition off.
Do not park your vehicle in Neutral, it may move unexpectedly
and injure someone. Use 1 (First) gear and set the parking brake
fully.
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)
Driving
180