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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1987FORWARD CONTROL 4.8 T, AUTOMATIC, 400/M40REPAIR AND DIAGNOSISENGINE PERFORMANCEIGNITION SYSTEMIGNITION SYSTEM - HEI (CARBURETED MODELS)OVERHAULDISTRIBUTORDISASSEMBLY
1987 Chevrolet Forward Control 4.8 T, Automatic, 400/M40
Ignition System - HEI (CARBURETED Models): Overhaul: Distributor: Disassembly
1987 Chevrolet Forward Control 4.8 T, Automatic, 400/M40SECTION Disassembly
- Remove wiring harness from cap. Remove distributor cap and disconnect vacuum hose from vacuum advance unit. Mark position of rotor and distributor housing for reassembly reference. Remove distributor housing from engine.
- Remove rotor, 2 advance springs, weight retainer and advance weights. Mark distributor shaft and gear so they may be assembled in same position. Drive roll pin out of drive gear while supporting gear to avoid damaging distributor shaft.
- Remove gear, shim and tanged washer from distributor shaft. Clean all components and remove burrs from shaft. Carefully remove distributor shaft from housing. DO NOT attempt to service shaft bushings in housing.
- Remove 2 vacuum advance attaching screws and remove unit. Disconnect capacitor lead and remove capacitor. Remove 2 attaching screws holding module to housing and remove module. Remove "C" washer from housing. Remove pick-up coil assembly from distributor shaft.
- Remove wiring harness from position in distributor housing. For integral coils, remove 3 coil cover attaching screws and lift off cover. Remove 4 ignition coil attaching screws, disconnect coil leads, and remove coil from cap. Remove ignition coil arc seal.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.