Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1981FORWARD CONTROL 4.8L ENG VIN T, STANDARD TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)STEERINGPOWER STEERINGPOWER STEERING GEARS - SAGINAW ROTARY VALVEOVERHAULSTEERING GEARDISASSEMBLY
1981 Chevrolet Forward Control 4.8L Eng VIN T, Standard Trans
Steering Gear: Disassembly
1981 Chevrolet Forward Control 4.8L Eng VIN T, Standard TransSECTION Disassembly
- Rotate housing end plug retainer ring until one end of plug is over hole in housing. Force end of ring from groove in housing and remove. Rotate input shaft counterclockwise to force housing end plug out of housing. Rotate input shaft clockwise 1/2 turn to draw rack-piston inward, then remove piston and plug from rack-piston.CAUTION: Do not rotate shaft more than is necessary to remove plug as ball bearings will fall out of worm and rack piston assembly.
- Remove lock nut from sector shaft adjuster, then remove sector shaft cover. Remove and discard "O" ring from cover. Turn input shaft until sector shaft teeth are centered in housing. Tap end of sector shaft with a soft-faced hammer to free shaft from housing, then remove sector shaft. Remove adjuster plug lock nut, and using a spanner wrench, remove adjuster plug.
- Insert a suitable arbor tool into end of rack-piston until tool just contacts worm shaft. Rotate input shaft counterclockwise until worm is free of rack-piston, then remove rack-piston assembly from housing taking care to keep tool fully inserted to prevent ball bearings from falling out. Remove input shaft and control valve assembly from housing. Lift worm, lower thrust bearing, and races from housing.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
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.