Wednesday, June 22, 2011

How to replace ignition switch on ford f350?

Ignition Switch


REMOVAL & INSTALLATION






  1. Disconnect the battery ground cable.
  2. Remove the steering column shroud and lower the steering column.
  3. Disconnect the switch wiring at the multiple plug.
  4. Remove the two nuts that retain the switch to the steering column.
  5. Lift the switch vertically upward to disengage the actuator rod from the switch and remove the switch.
  6. When installing the ignition switch, both the locking mechanism at the top of the column and the switch itself must be in the LOCK position for correct adjustment. To hold the mechanical parts of the column in the LOCK position, move the shift lever into PARK (with automatic transmissions) or REVERSE (with manual transmissions), turn the key to the LOCK position, and remove the key. New replacement switches, when received, are already pinned in the LOCK position by a metal shipping pin inserted in a locking hole on the side of the switch.
  7. Engage the actuator rod in the switch.
  8. Position the switch on the column and install the retaining nuts, but do not tighten them.
  9. Move the switch up and down along the column to locate the mid-position of rod lash, and then tighten the retaining nuts.
  10. Remove the locking pin, connect the battery cable, and check for proper start in PARK or NEUTRAL.-Also check to make certain that the start circuit cannot be actuated in the DRIVE and REVERSE position.
  11. Raise the steering column into position at instrument panel. Install steering column shroud.

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Ignition Lock Cylinder


REMOVAL & INSTALLATION



With Key
  1. Disconnect the battery ground.
  2. On tilt columns, remove the upper extension shroud by unsnapping the shroud from the retaining clip at the 9 o'clock position.
  3. Remove the trim shroud halves.
  4. Unplug the wire connector at the key warning switch.
  5. Place the shift lever in PARK and turn the key to ON .
  6. Place a 1 / 8 in. (3mm) wire pin in the hole in the casting surrounding the lock cylinder and depress the retaining pin while pulling out on the cylinder.
  7. When installing the cylinder, turn the lock cylinder to the RUN position and depress the retaining pin, then insert the lock cylinder into its housing in the flange casting. Assure that the cylinder is fully seated and aligned in the interlocking washer before turning the key to the OFFposition. This will allow the cylinder retaining pin to extend into the cylinder cast housing hole.
  8. The remainder of installation is the reverse of removal.

Non-Functioning Cylinder or No Key Available
FIXED COLUMNS
  1. Disconnect the battery ground.
  2. Remove the steering wheel.
  3. Remove the turn signal lever.
  4. Remove the column trim shrouds.
  5. Unbolt the steering column and lower it carefully.
  6. Remove the ignition switch and warning buzzer and pin the switch in theLOCK position.
  7. Remove the turn signal switch.
  8. Remove the snapring and T-bolt nuts that retain the flange casting to the column outer tube.
  9. Remove the flange casting, upper shaft bearing, lock cylinder, ignition switch actuator and the actuator rod by pulling the entire assembly over the end of the steering column shaft.
  10. Remove the lock actuator insert, the T-bolts and the automatic transmission indicator insert, or, with manual transmissions, the key release lever.
  11. Upon reassembly, the following parts must be replaced with new parts:

    Flange
    Lock cylinder assembly
    Steering column lock gear
    Steering column lock bearing
    Steering column upper bearing retainer
    Lock actuator assembly


  1. Assembly is a reversal of the disassembly procedure. It is best to install a new upper bearing. Check that the truck starts only in PARK and NEUTRAL.

TILT COLUMNS

See Figures 1, 2, 3, 4 and 5



Click image to see an enlarged view

Fig. Fig. 1: Drilling out the lock retaining pin



Click image to see an enlarged view

Fig. Fig. 2: Breaking the cap away from the lock cylinder



Click image to see an enlarged view

Fig. Fig. 3: Non-tilting column mechanism



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Fig. Fig. 4: Lock retaining pin access slot on non-tilt column



Click image to see an enlarged view

Fig. Fig. 5: Tilt column mechanism

  1. Disconnect the battery ground.
  2. Remove the steering column shrouds.
  3. Using masking tape, tape the gap between the steering wheel hub and the cover casting. Cover the entire circumference of the casting. Cover the seat and floor area with a drop-cloth.
  4. Pull out the hazard switch and tape it in a downward position.
  5. The lock cylinder retaining pin is located on the outside of the steering column cover casting adjacent to the hazard flasher button.
  6. Tilt the steering column to the full up position and pre-punch the lock cylinder retaining pin with a sharp punch.
  7. Using a 1 / 8 in. (3mm) drill bit, mounted in a right angle drive drill adapter, drill out the retaining pin, going no deeper than 1 / 2 in. (13mm).
  8. Tilt the column to the full down position. Place a chisel at the base of the ignition lock cylinder cap and using a hammer break away the cap from the lock cylinder.
  9. Using a 3 / 8 in. (10mm) drill bit, drill down the center of the ignition lock cylinder key slot about 1 3 / 4 in. (44mm), until the lock cylinder breaks loose from the steering column cover casting.
  10. Remove the lock cylinder and the drill shavings.
  11. Remove the steering wheel.
  12. Remove the turn signal lever.
  13. Remove the turn signal switch attaching screws.
  14. Remove the key buzzer attaching screw.
  15. Remove the turn signal switch up and over the end of the column, but don't disconnect the wiring.
  16. Remove the 4 attaching screws from the cover casting and lift the casting over the end of the steering shaft, allowing the turn signal switch to pass through the casting. The removal of the casting cover will expose the upper actuator. Remove the upper actuator.
  17. Remove the drive gear, snapring and washer from the cover casting along with the upper actuator.
  18. Clean all components and replace any that appear damaged or worn.
  19. Installation is the reverse of removal.

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Car no start:--

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

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