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 MANUALSCHEVROLET1990HI-CUBE 7.4 N, 400/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)SUSPENSIONFRONT SUSPENSIONSUSPENSION - FRONT (2WD COIL SPRING)REMOVAL & INSTALLATIONLOWER CONTROL ARMREMOVAL
1990 Chevrolet Hi-Cube 7.4 N, 400/M40
Lower Control Arm: Removal
1990 Chevrolet Hi-Cube 7.4 N, 400/M40SECTION Removal
- Remove coil spring. See COIL SPRINGS in this article. Support inboard end of control arm. Remove cotter pin from lower ball joint stud, then loosen ball joint stud nut one turn.
- Using Ball Joint Separator (J-23742 ), position large cupped end of separator over upper ball stud nut and pilot threaded end of tool onto lower ball stud. See Figure.
- Extend bolt of ball joint separator to separate ball stud from steering knuckle. Remove ball joint separator and stud nut. Remove control arm-to-frame nuts. Remove control arm.
RENDER: 1.0x
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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.