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 MANUALSCHEVROLET1986CHEVETTE L4-98 1.6LREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLPOWER BRAKE ASSISTSERVICE AND REPAIRSERVICE NOTES
1986 Chevrolet Chevette L4-98 1.6L
Service Notes
1986 Chevrolet Chevette L4-98 1.6LSECTION Service Notes
1. After disassembling a power brake unit, soak all metal parts in a suitable solvent.
2. Use only alcohol on rubber parts or parts containing rubber. After the parts have been thoroughly cleaned and rinsed in solvent, the metal parts that come in contact with hydraulic brake fluid or rubber parts should be rewashed in clean alcohol before assembly.
3. Use an air hose to blow dirt and cleaning fluid from the recesses and internal passages.
4. Always use all the parts furnished in the repair kit. Discard all old rubber parts.
5. Use extreme caution when disassembling power assist mechanisms, as releasing internal spring tension suddenly could cause damage or personal injury.
6. On models with hydro-boost assist systems, do not disassemble the accumulator. If the accumulator is damaged or diagnosed as defective, it must be replaced as an assembly.
2. Use only alcohol on rubber parts or parts containing rubber. After the parts have been thoroughly cleaned and rinsed in solvent, the metal parts that come in contact with hydraulic brake fluid or rubber parts should be rewashed in clean alcohol before assembly.
3. Use an air hose to blow dirt and cleaning fluid from the recesses and internal passages.
4. Always use all the parts furnished in the repair kit. Discard all old rubber parts.
5. Use extreme caution when disassembling power assist mechanisms, as releasing internal spring tension suddenly could cause damage or personal injury.
6. On models with hydro-boost assist systems, do not disassemble the accumulator. If the accumulator is damaged or diagnosed as defective, it must be replaced as an assembly.
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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.