Parts for your 1999 Daihatsu Gran move-Cluth slave cylinder

1999 Daihatsu Gran Move clutch slave cylinder — what it does and how to look after it

For the 1999 Daihatsu Gran Move (also known as the G300-series Pyzar) fitted with the 5‑speed manual gearbox, a clutch slave cylinder is absolutely relevant and used. Factory technical references confirm it: the Daihatsu G300 workshop manual describes a hydraulic clutch system with a clutch master cylinder and a clutch release (slave) cylinder on the bellhousing, and the Daihatsu Electronic Parts Catalogue (EPC) lists the “Cylinder Assy, Clutch Release” for manual Gran Move variants. Major parts catalogues from OEM suppliers (e.g., Aisin/Exedy) also catalogue a dedicated slave cylinder for the G300 manual. Note: automatic Gran Move models don’t have a clutch slave cylinder because they don’t use a manual clutch at all.

On a manual 1999 Gran Move, the clutch slave cylinder converts hydraulic pressure from the master cylinder into mechanical movement, pushing the release fork to disengage the clutch. It’s a small bit of kit that does a big job every time the pedal’s pressed, so if it’s tired, the whole drive can feel off.

Common signs the slave is on the way out include:

• Spongy or sinking clutch pedal, or difficulty selecting gears
• Fluid weeping around the slave or a damp bellhousing
• Low clutch fluid in the reservoir (shared with brake fluid on some setups)

Good servicing habits keep it sweet for the long haul:

• Flush the clutch hydraulic fluid with DOT 3 or DOT 4 every 2 years or 40,000 km. Moisture in old fluid causes corrosion and seal wear.
• At each service, check for leaks, perished rubber boots, and clean, dry connections. Top up only with fresh, unopened fluid.
• If the slave shows pitting or torn dust boots, replace it. It’s often smart to replace the master cylinder at the same time, so both ends are fresh.
• After replacement, bleed the system thoroughly. A pressure or vacuum bleeder makes light work of it, otherwise, a two‑person pedal bleed is fine.
• Use quality parts and new copper washers. Don’t over‑torque the line fitting—snug and sealed is the goal.

If the pedal feel suddenly changes on a trip, pull up safely and check under the bonnet and at the gearbox for leaks. Catching a failing slave early can save the clutch from dragging and the gearbox from copping unnecessary wear. With a healthy slave cylinder, the Gran Move’s shift action stays tidy and predictable—too easy.

• Does every 1999 Gran Move have a clutch slave cylinder?
  Manual versions do, automatics don’t. The slave cylinder is part of the hydraulic clutch system found only on 5‑speed manual Gran Moves.
• What fluid should be used, and how often should it be changed?
  Use DOT 3 or DOT 4 brake fluid. Change it every 2 years or 40,000 km to prevent moisture‑related corrosion and seal wear.
• What are the tell‑tale signs the slave cylinder is failing?
  Look for a soft or sinking pedal, trouble engaging gears, and fluid leaks around the bellhousing or slave body. Low fluid in the reservoir is another giveaway.