Clutch master cylinder [Toyota Dyna Y50]

Removal the master cylinder

1. Pump out the fluid

2. Remove the cotter pin and pull out the fork mounting pin.

3. Disconnect the hose.

4. Disconnect the clutch hydraulic line.

5. Loosen the mounting bolts and remove the master cylinder.

Disassembling the master cylinder

1. Remove the pusher.

a) Pull off the cover and use ring remover pliers to remove the retaining ring.

b) Pull out the pusher together with the washer.

2. Using compressed air, push the piston out of the cylinder.

Warning: The piston may be forced out of the master cylinder under pressure.

Checking the master cylinder

1. Inspect the master cylinder mirror for burrs or corrosion.

2. Inspect the piston and seals for wear, scoring, cracks or swelling.

If only one of the parts requires replacement, the cylinder parts must be replaced as a set.

The article was copied from the portal ToyotaMAN

3. Inspect the pushrod for wear or damage.

Assembling the master cylinder

1. Apply grease as shown in the figure.





2. Insert the piston into the cylinder.

3. Install the pusher assembly with the retaining ring.

4. Install the fitting as shown in the figure.



5. Tighten the bypass bolt.

• Tightening torque - 54 Nm

Installing the master cylinder

1. Install the master cylinder and tighten its mounting bolts.

2. Connect the clutch hydraulic line.

3. Connect the hose.

4. Tighten the cylinder mounting bolts.

• Tightening torque - 13 Nm

5. Install the pin and insert the cotter pin.

6. Bleed the clutch hydraulic drive.

7. Check the tightness of the system.

8. Check and adjust the position of the clutch pedal.