Parts for your 1998 Daihatsu Gran move-Brake wheel cylinders

1998 Daihatsu Gran Move brake wheel cylinders

Brake wheel cylinders are relevant and fitted to the 1998 Daihatsu Gran Move (also known as the Pyzar, G30-series). Factory workshop literature for the G30 range specifies rear drum brakes actuated by hydraulic wheel cylinders, and major aftermarket catalogues (Aisin, TRW, Nipparts, Bendix) list rear wheel cylinder assemblies for this model. That means the Gran Move runs discs up front and drum brakes with wheel cylinders at the back.

On the Gran Move, the rear brake wheel cylinders sit at the top of each rear drum assembly and convert hydraulic pressure from the master cylinder into outward force on the brake shoes. That pushes the shoes against the drum, slowing the car. They’re simple, tough little units, but age, moisture, and old brake fluid can corrode the bores and harden the seals, leading to leaks or sticking pistons.

Owners should expect tell-tale signs such as a long or spongy pedal, the car pulling to one side under braking, fluid “weep” at the bottom of the backing plate, damp or contaminated shoes, or uneven rear shoe wear. Left alone, a leaking cylinder can soak the shoes, slash braking performance, and cop a WOF/roadworthy fail.

As part of regular servicing, it pays to:

• Inspect rear drums, shoes, and cylinders every 10,000–15,000 kilometres or at each brake service.
• Refresh brake fluid every 2 years to minimise internal corrosion (DOT 3 or DOT 4 as marked on the reservoir cap or owner’s manual, avoid silicone DOT 5).
• Check for free piston movement and any signs of fluid at the dust boots.

When replacement is needed, doing both rear cylinders as a pair keeps braking balanced. It’s smart to fit new shoes if they’re contaminated, and to clean and lightly lubricate the contact points on the backing plate (never the linings). After refitting, bleed the system with fresh fluid, starting at the wheel furthest from the master cylinder, and confirm a firm pedal. If the Gran Move’s automatic adjusters are sticky, free them up or replace the hardware so the pedal stays high. Quality branded cylinders are inexpensive insurance, and matching the bore size to the original spec preserves correct brake bias.

A tidy Gran Move with healthy rear wheel cylinders stops straight, stays safe, and keeps the WOF inspector happy.

Popular questions about 1998 Daihatsu Gran Move brake wheel cylinders

Does a 1998 Daihatsu Gran Move actually have brake wheel cylinders?
The 1998 Gran Move runs rear drum brakes, and yes, each rear drum uses a hydraulic wheel cylinder. This is documented in Daihatsu’s G30-series service information and supported by major parts catalogues listing rear wheel cylinder assemblies for the model.

How often should the wheel cylinders be replaced?
There’s no fixed interval. They’re replaced when leaking, seized, or showing torn boots and contamination. Regular inspections and a brake fluid change every 2 years greatly reduce corrosion and extend service life.

What brake fluid should be used?
Use DOT 3 or DOT 4, as specified on the reservoir cap or in the owner’s manual. Do not use silicone DOT 5. Fresh, quality fluid helps protect the wheel cylinders and keeps the pedal feel consistent.