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HOMESERVICE MANUALSCHEVROLET1993FORWARD CONTROL 7.4 NREPAIR AND DIAGNOSISSTEERINGSTEERING COLUMNOVERHAULTILT COLUMNDISASSEMBLY (FLOOR SHIFT)
1993 Chevrolet Forward Control 7.4 N

Disassembly (Floor Shift)

1993 Chevrolet Forward Control 7.4 NSECTION Disassembly (Floor Shift)
  1. Disconnect negative battery cable. Remove steering column from vehicle. See STEERING COLUMN under REMOVAL & INSTALLATION. Remove steering wheel. See STEERING WHEEL & HORN PAD under REMOVAL & INSTALLATION. Remove shaft lock cover. See Figure . Using Lock Plate Compressor (J-23653-C), compress lock plate and pry retaining ring from groove in steering shaft. See Figure . Discard retaining ring. Remove lock plate. Remove turn signal canceling cam.
  2. Remove upper bearing spring. Remove upper bearing race seat and inner race. Place turn signal in up (right turn) position. Remove turn signal/combination switch lever and hazard switch lever. Remove switch actuator arm screw and remove switch actuator arm. Remove 3 turn signal switch retaining screws. Remove steering column support bracket bolts and support bracket.
  3. Disconnect turn signal switch electrical connector. Remove 2 wiring protectors and carefully pull wiring through steering column. Remove turn signal switch and allow to hang free.
  4. Remove buzzer switch. Place key in lock cylinder and turn to LOCK position. Remove lock retaining screw, being careful not to drop screw down column. See Figure . Pull lock cylinder from housing.
  5. Remove 3 column housing cover screws. Remove tilt lever. Remove column housing cover. Remove column housing cover end cap and dimmer switch rod actuator assembly. Separate dimmer switch rod actuator from end cap. Remove washer/wiper switch actuator pivot pin. Remove washer/wiper switch.
  6. Using screwdriver, push down and turn counterclockwise to release and remove tilt spring retainer. Remove tilt spring and spring guide. Using Pivot Pin Remover (J-21854-01), remove tilt pivot pins from steering column. Reinstall tilt lever. Pull back on tilt lever and pull column housing down and away, separating housing from column.
  7. Remove bearing assembly. Remove shaft lock bolt spring screw, lock bolt spring and shaft lock bolt. Remove ignition switch actuator rack and rack preload spring. Remove drive shaft. Remove switch actuator sector. Using Lock Shoe/Release Lever Pin Remover/Installer (J-22635), remove release lever pin. Remove shoe release lever and release lever spring.
  8. Using Lock Shoe/Release Lever Pin Remover/Installer (J-22635), remove lock shoe dowel pin. Remove lock shoes and lock shoe springs from column housing. Mark upper steering shaft to lower steering shaft for reassembly reference. Tilt lower steering shaft up to 90-degree angle and separate from upper steering shaft. Rotate upper steering shaft centering sphere 90 degrees and slip out of upper shaft. Remove joint preload spring from centering sphere.
  9. Remove 4 steering column housing support screws. Remove steering column housing support and dimmer switch actuator rod assembly. Remove dimmer switch actuator rod from column housing support. Remove shift lever gate retaining screws and remove shift lever gate from column housing support.
  10. Disconnect dimmer switch electrical connector. Remove dimmer switch retaining screws and remove dimmer switch. Remove ignition switch retaining screw and remove ignition switch and actuator rod. Separate ignition switch actuator rod from switch. Remove lock plate from steering column support. Remove key release lever and key release spring from gearshift bowl shroud. Separate key release spring and release lever finger pad from key release lever.
  11. Remove gearshift bowl shroud from steering column. Remove lower bearing adapter clip from bottom of steering column. Remove lower bearing adapter retainer, adapter and bearing assembly.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.