Chassis, Steering & Brakes
Hydraulic & Anti-Lock Braking System
Converting a driver’s foot push into thousands of pounds of friction clamping force at all four corners, the 1994 F-150 combines a 4:1 mechanical brake pedal lever, a tandem vacuum booster, a split front/rear hydraulic master cylinder, 11.72-inch front vented disc brakes, 11.03-inch rear duo-servo drum brakes, and Rear Anti-Lock Brakes (RABS II).
- Power Assist & Master
- 10.75" Tandem Vacuum Booster · Split dual-circuit master
- Front Disc Brakes
- 11.72" (297.7 mm) vented cast-iron rotors · 2.87" phenolic piston
- Rear Drum Brakes
- 11.03" × 2.25" finned drums · Duo-servo self-energizing shoes
- Anti-Lock System
- Kelsey-Hayes RABS II (Rear Anti-Lock electro-hydraulic valve)
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Power Steering & Linkage System
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Suspension & Ladder Frame System (Part 1: Front · Part 2: Rear)
Parts Catalog
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Part Assemblies in Braking System
Brake Pedal, Tandem Vacuum Booster, Master Cylinder & RABS
Multiplies driver foot effort via engine intake vacuum, splits front/rear hydraulic circuits, and modulates rear anti-lock pressure.
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11.72" Front Vented Disc Brake, 73mm Caliper & Wheel Bearings
Handles over 70% of the truck’s stopping power with radial cooling vanes, a 73mm phenolic caliper piston, and tapered wheel bearings.
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11.03 × 2.25" Duo-Servo Rear Drum Brake & Parking Brake
Self-energizing primary and secondary brake shoes linked by a floating star-wheel adjuster that multiply clamping force.
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