Parts for your 1998 Nissan Pulsar-Brake wheel cylinders

1998 Nissan Pulsar brake wheel cylinders — what they do and when to replace

Technical references confirm the 1998 Nissan Pulsar (N15 series, AU/NZ) was built with front disc brakes and either rear drum brakes or rear discs depending on trim. The factory Nissan Pulsar N15 Workshop Manual (1995–2000) and Gregory’s Nissan Pulsar N14 & N15 Service and Repair Manual outline a rear drum system with hydraulic wheel cylinders on most variants, while higher-spec models with rear discs don’t use wheel cylinders. Australian parts catalogues (e.g., Bendix brake data and local aftermarket listings) also show wheel cylinder fitments for many N15 rear-drum Pulsars. So, brake wheel cylinders are relevant for 1998 Pulsars fitted with rear drum brakes, but not for rear-disc variants such as some SSS models.

On rear-drum 1998 Pulsars, the brake wheel cylinder is the small hydraulic actuator that converts pedal pressure into movement of the brake shoes. Mounted on the backing plate at the top of each rear drum assembly, it uses two pistons to push the shoes outward against the drum, slowing the car smoothly and predictably.

Because they live inside the drum and deal with heat, moisture and brake dust, wheel cylinders can corrode, leak or seize with age. When they start playing up, the car might pull to one side, the brake pedal may feel soft, or there’ll be tell‑tale fluid weeping from the drum. Owners often notice a bit more pedal travel or uneven rear shoe wear when a cylinder is on the way out.

Maintenance is straightforward and best done alongside a rear brake service:

• Inspect both rear wheel cylinders for leaks and split dust boots whenever the shoes or drums are off.
• If one side is leaking or seized, replace both sides on the axle for even braking.
• Use the correct bore size cylinder for the N15 and quality new copper washers where required.
• Flush and bleed the system with the fluid type specified by Nissan (DOT 3 or DOT 4) every two years or 40,000 km.
• After fitting new cylinders, adjust the rear shoes, set the handbrake clearance, and bleed the rears thoroughly.

There’s no set replacement interval