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 MANUALSCHEVROLET1986C 10 P/U 2WD V8-350 5.7LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGEXPANSION VALVESERVICE AND REPAIR
1986 Chevrolet C 10 P/U 2WD V8-350 5.7L
Expansion Valve: Service and Repair
1986 Chevrolet C 10 P/U 2WD V8-350 5.7LSECTION Service and Repair
C, K, G, R & V SERIES, OVERHEAD TYPE SYSTEM
1. Disconnect battery ground cable, then discharge system refrigerant.
2. Remove rear duct drain tube, remove duct to header bracket and roof panel screws, then remove rear duct assembly.
3. Disconnect blower motor harness lead and ground wire.
4. While supporting lower case to prevent damage to motor or case assemblies, remove case mounting screws, then lower case from vehicle roof.
5. Remove expansion valve sensing bulb clamps. Disconnect inlet and outlet lines at valve, then remove valve. Plug open connections.
6. Reverse procedure to install.
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.