Parts for your 1998 Ford Falcon-Brake wheel cylinders

1998 Ford Falcon brake wheel cylinders: what they do and when to replace them

Technical sources confirm brake wheel cylinders are used on many 1998 Ford Falcon models with rear drum brakes. As documented in Ford’s AU Falcon Workshop Manual (1998–2002), Ellery’s Repair Manual – Ford Falcon AU Series, and Ford’s Microcat EPC/parts catalogues, base and mid-spec variants such as the Forte, some Futura sedans, and many utes were equipped with rear drums that rely on wheel cylinders. AU Falcons optioned or delivered with rear disc brakes (common on higher-spec or performance packages) don’t use wheel cylinders on the rear axle, those setups use caliper pistons instead.

On a 1998 Ford Falcon with rear drums, the brake wheel cylinders are the small hydraulic units that sit inside each rear drum. When the driver presses the pedal, brake fluid pressure pushes the two pistons in the cylinder outward, spreading the shoes against the drum to slow the car. Simple, tough and effective, they’re a key reason the Falcon’s drum rears work reliably day in, day out.

As part of routine servicing, it’s smart to keep an eye on them. A quick peek under the rubber dust boots for any moisture, and a look at the backing plate for tell-tale dampness or grime, will catch early leaks. If a wheel cylinder seeps, the shoes can get contaminated, braking can pull to one side, and pedal feel can go spongy. Any leak means replacement, and it’s best practice to do them in axle pairs to keep braking even left-to-right.

When replacing, match the cylinder to the vehicle’s build details (VIN/axle code), as bore sizes vary by brake package. Use a proper brake line spanner to avoid rounding the union, fit new bleed nipples if supplied, and lightly torque the fasteners per the workshop manual. If the shoes have been soaked in fluid, replace them—cleaning rarely restores full bite. After installation, adjust the shoes if required, set the handbrake correctly, and bleed the system with fresh DOT 4 fluid, following the Falcon’s specified bleed sequence. A full brake fluid flush every two years keeps corrosion at bay and helps wheel cylinders live a long life.

A quick road test to bed in the shoes (progressive stops from low speeds) will finish the job nicely. For AU Falcons running rear discs, none of the above applies to the rear axle—those cars use calipers, not wheel cylinders, so the service focus shifts to sliders, pads and pistons instead.

• Common signs of a failing wheel cylinder: wet backing plate, low fluid level, soft pedal, rear brake pull, or uneven shoe wear.
• Service tips: replace in pairs, use DOT 4 fluid, inspect/replace contaminated shoes, and confirm correct rear drum adjustment.

Popular questions about 1998 Ford Falcon brake wheel cylinders

How can someone tell if their 1998 Ford Falcon has brake wheel cylinders?
Check the rear brakes. If there’s a drum and shoe setup, it uses wheel cylinders. If there’s a visible caliper and rotor at the rear, it doesn’t. Many Forte, some Futura and ute variants ran drums, higher-spec or performance trims often had rear discs.

What are the typical signs a wheel cylinder is failing on an AU Falcon?
Look for a damp or oily backing plate, fluid under the dust boots, a soft or sinking brake pedal, the car pulling under braking, or rear brakes grabbing. Any leak means the cylinder and often the shoes need attention straight away.

Do wheel cylinders need replacing in pairs, and what else should be done?
Yes—replace both rear wheel cylinders together to keep braking balanced. Flush the system with fresh DOT 4 fluid, bleed as per the manual, and inspect the shoes and drums. Match the new cylinder’s bore size to the vehicle’s build spec.