Service Procedures — Ford Bronco 1978-1979
Technical Reference
Member-uploaded diagrams & documents for this generation. AI-classified; community-verified where badged.
Service Procedures
- Battle Born Brakes hydroboost install page with plumbing diagram: super duty gear boxes use 18mm input and 16mm output, OEM boxes 1/2in input and 5/8in output; bench-bleed the master cylinder before installation.
- Service instruction page covering booster output rod adjustment and 3/16-inch brake line plumbing for a hydroboost install.
- Service instruction page detailing booster stud cutting, brake pedal bushing and booster bracket installation.
- Service manual radio page describing how the circuit works (power through fuse 10 in RUN/ACCY) plus trouble-shooting steps for no sound and a 2-4 ohm speaker resistance check.
- Service-manual page explaining how the power brake booster, automatic transmission vacuum diaphragm and vacuum reserve tank work, with vacuum-gauge trouble-shooting steps (18 in-Hg hold spec).
- Vacuum system troubleshooting method (probability, speed, simplicity, elimination, certainty) and tool guide for using a vacuum gauge and Rotunda 21-0014 vacuum tester, with hose color designations.
- Cutaway locator for heater/AC and deluxe heater: blower motor, A/C heat function and selector controls, vacuum motors (outside-recirc, water valve, defrost), A/C clutch, and fuse block.
- Wiper/washer how-it-works and troubleshooting for conventional and intermittent wipers through fuse 11; lists wire 763 (o/w), 58 (w/o), 56 (bl) test points and C502 connector pinouts.
- Radio how-it-works and troubleshooting: powered via fuse 10 in RUN/ACCY; AM/AM-FM monaural use one dash speaker, AM/FM multiplex uses door speakers; check speaker resistance 2-4 ohms.
- Cutaway locator for accessory systems: AM/FM/CB radio, windshield washer/wipers, speed control actuator and sensor, horn, and Bronco power tailgate window on a Ford pickup.
- Fuel gage how-it-works and troubleshooting: instrument voltage regulator outputs ~5V pulsating; fuel sender resistance must be 8-66 ohms and gage 8-16 ohms, with test-light diagnostic steps.
- How-it-works and troubleshooting for oil pressure, brake, alternator warning lights and seat belt warning light/buzzer: switch positions, continuity, ground and switch-replacement steps.
- Cutaway locator for warning lights and gages: ammeter, fuel/water-temp/oil-pressure gages, brake warning, seat belt, 4-wheel-drive indicator, fuel tank selector switch, and sending units on a Ford pickup.
- How-it-works and troubleshooting steps for dome/dome-map (Bronco only)/courtesy lights through fuse 7, plus glove box and cargo light diagnosis, with partial wiring snippet.
- Cutaway locator drawing of interior lighting components: dome light, vanity mirror, cargo light, instrument illumination, dome/courtesy light switch, cigar lighter, and headlight switch on a Ford pickup.
- Troubleshooting text for turn signals, emergency warning flasher, stop lights, and backup lights: how each circuit works through fuse 9 (15A) plus step-by-step continuity and flasher replacement checks.
- Ford manual Exterior Lighting System page: headlight switch internal circuit breakers and single-lamp/headlight troubleshooting with dimmer-switch connector terminal diagrams (wire 285, 13, 12b, 25).
- Ford manual Starting/Ignition System page: starter, starter relay and ignition switch operation plus troubleshooting (jumper red/blue-stripe relay wire to battery positive, ignition module spark tests).
- Ford manual charging-system diagram plus component location/connector-description table (alternator, voltage regulator, starter relay, splices) and the alternator-regulator jumper-wire test setup.
- Ford manual Charging System page: how the alternator/voltage regulator/battery circuit works plus quick checks (belt tension, hydrometer >=1.230) and no-load voltage troubleshooting steps.
- Ford manual 'Trouble-Shooting...The Basics' page covering probability/speed/elimination method plus battery, alternator and vacuum-system quick checks and visual inspection tips.
- Ford troubleshooting manual page explaining electrical test tools - unpowered test light, self-powered test light, and jumper wire - with how-to steps for checking power and continuity.
- Manual page with step-by-step front door window glass and mechanism adjustment procedure plus exploded door diagram.
- Step-by-step service procedure for V8 positive stop valve clearance, listing crankshaft rotation positions and intake/exhaust valves.
- Speed control system service procedure covering ground brush removal/installation (via steering wheel and turn signal switch), control switch test, and speed sensor resistance test (680 ohms set-speed, 120 ohms coast).
- Ford shop-manual figure (section 37-01-10) showing cruise-control servo, bracket, valve/hose assembly and vacuum routing for 351/400 CID and 460 CID engines on F-100-F-350 and Bronco.
- Service manual page for the tailgate window mechanism with step-by-step adjustment and removal instructions plus an exploded figure.
- Lakewood #21715 traction-bar instructions page 2: torque-steer correction by adjusting snubber gap, replacement urethane/rubber snubbers, Lakewood Industries technical-service contact, and photos of rear bracket and snubber location.
- Lakewood Industries #21715 traction-bar installation instruction sheet (duplicate of 845672), page 1: fits 1986-2000 Ford F-150 and 1973-87 Chevy/GMC 1/2-ton 2WD pickups, with prep and bracket mounting steps.
- Lakewood Industries #21715 traction-bar installation instruction sheet, page 1: fits 1986-2000 Ford F-150 and 1973-87 Chevy/GMC 1/2-ton 2WD pickups, covers vehicle prep and bracket/clamp mounting with 1/8 inch snubber gap.
- Step-by-step installation instructions for a Buyers lashing ring, including weld and load-rating steps.
- Service manual page with numbered transmission rebuild steps, figures, and a selective retaining ring thickness specification table.