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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Infiniti Q45 car and truck repair procedures including Infiniti 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 Infiniti Q45 automobile. Try the Automotix DIY solution today!
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BRAKE SERVICE PROCEDURES FOR 1991 Infiniti Q45 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Infiniti Q45 cars and light trucks from 1990+.

INFINITI, POWER BRAKE UNITS -> OVERHAUL
Vehicle: 1991 Infiniti Q45 4.5 V8 GAS

This unit cannot be overhau...

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BRAKE SERVICE PROCEDURES FOR 1991 Infiniti Q45 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Infiniti Q45 cars and light trucks from 1990+.

INFINITI, DISC BRAKES -> GENERAL INFORMATION -> BRAKE SYSTEM BLEED -> CALIPER -> Cylinder Body -> INSPECTION -> Piston -> PROPORTIONING VALVE -> ROTOR -> Runout -> Surface -> Thickness
Vehicle: 1991 Infiniti Q45 4.5 V8 GAS

BRAKE SYSTEM BLEED

  • Observe following precautions when bleeding brake system.
    • Carefully monitor brake fluid level at master cylinder during bleeding procedure.
    • Fill reservoir with new Dot 3 brake fluid.
    • Ensure fluid level is full at all times.
  • Connect a transparent vinyl tube to air bleeder valve.
  • Fully depress brake pedal several times.
  • With brake pedal depressed, open air bleeder valve to release air.
  • Release brake pedal slowly.
  • Repeat steps 3 through 5 until clear brake fluid comes out of air bleeder valve.
  • On models less ABS, bleed system in following order:
    • Left rear caliper.
    • Right ...

CLICK HERE TO GET FULL ACCESS TO 1991 Infiniti Q45 BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1991 Infiniti Q45 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Infiniti Q45 cars and light trucks from 1990+.

INFINITI, DISC BRAKES -> SERVICE -> Adjust -> BRAKE PAD REPLACE -> BRAKE PEDAL, ADJUST -> CALIPER -> Disassemble -> EXCEPT G20 REAR -> G20 -> G20 REAR -> M30 & Q45 -> PARKING BRAKE SHOES -> Replace
Vehicle: 1991 Infiniti Q45 4.5 V8 GAS

BRAKE PAD REPLACE

  • Raise and support vehicle, then remove master cylinder cap.
  • On Q45 models, disconnect speed sensor connector.
  • On all models, remove lower caliper mounting pin/bolt.
  • Pivot caliper upwards. Remove pad retainers and inner and outer shims. Fig. .
  • Remove brake pads.
  • Compress caliper piston with suitable C-clamp.
  • Reverse procedure to install. Torque to specifications and bleed brake system.

CALIPER

EXCEPT G20 REAR
Replace
  • Raise and support vehicle, then remove caliper mounting pins/bolts.
  • Disconnect brake hose and remove caliper.
  • Reverse procedure to install. Torque to specifications and...

CLICK HERE TO GET FULL ACCESS TO 1991 Infiniti Q45 BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1991 Infiniti Q45 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Infiniti Q45 cars and light trucks from 1990+.

INFINITI, POWER BRAKE UNITS -> DESCRIPTION
Vehicle: 1991 Infiniti Q45 4.5 V8 GAS

The vacuum assist diaphragm assembly multiplies the force exerted on the master cylinder piston in order to increase the hydraulic pressure delivered to the wheel calipers while decreasing the effort necessary to obtain acceptable stopping performance.

Vacuum assist units get their energy by opposing engine vacuum to atmospheric pressure. A piston, cylinder and f...

CLICK HERE TO GET FULL ACCESS TO 1991 Infiniti Q45 BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1991 Infiniti Q45 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Infiniti Q45 cars and light trucks from 1990+.

INFINITI, ANTI-LOCK BRAKES -> TROUBLESHOOTING
Vehicle: 1991 Infiniti Q45 4.5 V8 GAS

Refer to Figs. and , for system symptom ch...

CLICK HERE TO GET FULL ACCESS TO 1991 Infiniti Q45 BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1991 Infiniti Q45 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Infiniti Q45 cars and light trucks from 1990+.

INFINITI, ANTI-LOCK BRAKES -> SELF-DIAGNOSIS & TESTING -> DIAGNOSTIC TESTS -> G20 -> M30 -> Q45
Vehicle: 1991 Infiniti Q45 4.5 V8 GAS

The warning lamp on the instrument panel will come on when a problem is detected in the ABS braking system. To obtain a self diagnosing result the vehicle must be driven for at least one minute at a minimum speed of 20 mph before self diagnosis is obtained. After vehicle is stopped, the number of LED flashes is counted with the engine running, Fig. .

The LED, which is located in the control unit identifies a problem by the number of flashes, Figs and The LED and warning lamp will stay activated, even after malfunct...

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