OEM Scion xB Clutch Master Cylinder

Scion xB Clutch Master Cylinder Parts and Q&A

• Cylinder Kit, Clutch Master
  04311-12110
  Q: How to service and repair the Clutch Master Cylinder on Scion xB?

  A:

  Service and repair of the Clutch Master Cylinder starts with removing the Brake Master Cylinder Sub-Assembly and Brake Actuator Assembly and Brake Booster Assembly after which you should remove the Clutch Pedal Spring. Disconnect the Clutch Master Cylinder Push Rod Clevis after unpinning and unclipping the components and drain the brake fluid before cleaning away adhesive fluid that touched painted surfaces. The Special Service Tool: 09023-00101 enables you to loosen the clip to disconnect the Clutch Reservoir Tube from the Clutch Master Cylinder to Flexible Hose Tube then catch the fluid in a container while performing this step. The two nuts securing the Clutch Master Cylinder Assembly need to be removed for removal. The disassembly requires a pin punch and hammer to tap out the slotted spring pin followed by removal of the inlet union along with grommet before loosening the lock nut for push rod clevis removal. Finish by taking off the lock nut from the push rod. Push the push rod while using snap ring pliers to remove the snap ring and then take out the push rod by inserting the boot off the cylinder body. Keep an eye out for the piston to escape from the cylinder body before taking off both the stop plate and piston containing spring. Avoid hitting the inside components. The assembly procedure includes applying lithium soap base glycol grease to all parts followed by installing the piston with spring inside the cylinder body then fixing the stop plate to the push rod before reattaching the push rod. Start by pushing the push rod and afterward add the snap ring followed by boot and lastly the lock nut on the push rod. When installing the push rod clevis with its lock nut, add first the inlet union and new grommet followed by tapping in the slotted spring pin. The two nuts on the Clutch Master Cylinder Assembly need to be secured with 9.0 Nm (80 kgf-cm, 81 inch lbs.) of torque. Use Special Service Tool: 09023-00101 to join the Clutch Master Cylinder to the Flexible Hose Tube while torquing to 15 Nm (155 kgf-cm, 11 ft. lbs.) and attach the Clutch Reservoir Tube without twisting it and with the white mark pointing upward. Attach the clutch pedal clevis to its position with the pin and clip following an application of MP grease to the contact surfaces of the pin and clevis bush. The installation should be completed from the vehicle's left side position. Whole procedure begins by adding the Clutch Pedal Spring followed by joint installation of the Brake Booster and Brake Actuator Assemblies and Brake Master Cylinder Sub-Assembly. The brake fluid requirement must be met by filling the reservoir before performing the clutch system bleeding process to 8.4 Nm (86 kgf-cm, 74 inch lbs.) while verifying system integrity and checking fluid levels before inspecting the Clutch Pedal Sub-Assembly for adjustments.
• Master Cylinder
  31420-12030
  Q: How to remove the Clutch Master Cylinder on Scion xB?

  A:

  The first step to removing the Clutch Master Cylinder needs a complete removal of the Brake Booster assembly. Start the clutch master cylinder push rod clevis removal by taking off the clip and pin followed by detaching the push rod clevis from the clutch pedal assembly. You should use a container to catch fluid while you loose the clip and disconnect the clutch reservoir tube from the clutch master cylinder. A union nut wrench will disconnect the flexible hose tube from the clutch master cylinder as you place the collected fluid into a container. The clutch master cylinder assembly removal process begins with unattachment of its 2 securing nuts.