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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Porsche 928 car and truck
repair procedures including Porsche engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your 1991 Porsche 928 automobile. Try the Automotix DIY solution today!
We have info for following modifications of 1991 Porsche 928
- 1991 Porsche 928 S4 5.0 V8 GAS, CC:4950, Fuel Injection, Engine VIN:, Desg:A
- 1991 Porsche 928 GT 5.0 V8 GAS, CC:4950, Fuel Injection, Engine VIN:, Desg:B
BRAKE SERVICE PROCEDURES FOR 1991 Porsche 928 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Porsche 928 cars and light trucks from 1990+.
PORSCHE, POWER BRAKE UNITS -> POWER BRAKE UNITS -> BRAKE BOOSTER REPLACEMENT -> 911 -> 928 -> 944
Vehicle: 1991 Porsche 928 S4 5.0 V8 GAS
911
- Remove brake booster operating rod lockpin.
- Remove master cylinder attaching bolt from luggage compartment floor plate.
- Drain brake fluid reservoir.
- Disconnect electrical connectors for stop light switch, then disconnect vacuum hose at brake booster and the brake lines at master cylinder.
- Remove brake booster brace upper attaching bolt and the booster base attaching nuts, then remove master cylinder and booster as an assembly. Brace and operating rod do not have to be disconnected at pedal assembly to remove brake booster.
- Reverse procedure to install, noting the followi...
CLICK HERE TO GET FULL ACCESS TO 1991 Porsche 928 BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Porsche 928 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Porsche 928 cars and light trucks from 1990+.
PORSCHE, ANTI-LOCK BRAKES -> DESCRIPTION
Vehicle: 1991 Porsche 928 S4 5.0 V8 GAS
The anti-lock braking system prevents the wheels from locking in an emergency stop, until shortly before the vehicle comes to halt, thus assuring full steerability and directional stability. In addition, the system optimizes the braking distance corresponding to the varying degree of grip between the wheel and road surface.
The ABS control unit is matched to the approved tire dimensions. The use of unapproved tires can lead to different wheel speed...
CLICK HERE TO GET FULL ACCESS TO 1991 Porsche 928 BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Porsche 928 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Porsche 928 cars and light trucks from 1990+.
PORSCHE, ANTI-LOCK BRAKES -> DESCRIPTION
Vehicle: 1991 Porsche 928 GT 5.0 V8 GAS
The anti-lock braking system prevents the wheels from locking in an emergency stop, until shortly before the vehicle comes to halt, thus assuring full steerability and directional stability. In addition, the system optimizes the braking distance corresponding to the varying degree of grip between the wheel and road surface.
The ABS control unit is matched to the approved tire dimensions. The use of unapproved tires can lead to different wheel speed...
CLICK HERE TO GET FULL ACCESS TO 1991 Porsche 928 BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Porsche 928 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Porsche 928 cars and light trucks from 1990+.
PORSCHE, ANTI-LOCK BRAKES -> COMPONENT REPLACEMENT -> 944 -> ELECTRONIC CONTROL UNIT, REPLACE -> HYDRAULIC UNIT, REPLACE
Vehicle: 1991 Porsche 928 S4 5.0 V8 GAS
These components are non-serviceable and must be replaced as a unit.
HYDRAULIC UNIT, REPLACE
- Disconnect battery ground cable.
- Mark respective positions of wheel and wheel hub for reassembly, then remove right front wheel assembly.
- Remove wheel-arch inner panel.
- On 944S and 944 Turbo, disconnect braking-force regulator.
- Disconnect all brake lines, numbers one through six from hydraulic unit.
- On all models, disconnect ground wire, then remove mounting bolts from hydraulic-unit holder.
- Move hydraulic unit and holder out slightly to gain access to strain relief for 12-pole plug (no. t...
CLICK HERE TO GET FULL ACCESS TO 1991 Porsche 928 BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Porsche 928 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Porsche 928 cars and light trucks from 1990+.
PORSCHE, DISC BRAKES -> PARKING BRAKE ADJUSTMENT -> 911 -> 928 -> 944
Vehicle: 1991 Porsche 928 S4 5.0 V8 GAS
911
- Raise and support vehicle.
- Remove rear wheels.
- Release brake cable tension at adjusting nuts behind disc splash shield.
- Insert screwdriver into adjustment opening in rear brake disc assembly.
- Rotate parking brake adjustment sprocket so that disc can no longer be rotated by hand.
- Repeat step 5 on opposite side.
- Adjust cable tension until slack is removed by rotating adjustment nuts behind brake disc splash shield.
- Remove tunnel cover and parking brake lever boot and check position of cable equalizer.
- Position the equalizer in the two inspection holes when lever is pulled up.
- T...
CLICK HERE TO GET FULL ACCESS TO 1991 Porsche 928 BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Porsche 928 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Porsche 928 cars and light trucks from 1990+.
PORSCHE, HYDRAULIC BRAKE SYSTEMS -> MASTER CYLINDER REPLACEMENT -> 911 -> 928 -> 944
Vehicle: 1991 Porsche 928 GT 5.0 V8 GAS
911
- Remove operating rod lockpin.
- Remove master cylinder mounting bolt located inside on luggage compartment floor plate.
- Drain brake fluid reservoir with suitable siphon.
- Disconnect stop light switches, vacuum hose clamp, and brake lines.
- Remove upper bolt from booster body and booster base retaining nuts.
- Reverse procedure to install.
928
- Remove intake hoses and upper section of air cleaner assembly.
- Drain both chambers of master cylinder by pumping out brake fluid via bleeder valves of front or rear brake calipers.
- Disconnect vacuum hose with check valve at brake booster.
- Di...
CLICK HERE TO GET FULL ACCESS TO 1991 Porsche 928 BRAKE SERVICE PROCEDURES
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