Reconditioning Brake Pumps Part 3 : Testing

Welcome to the final part of our comprehensive three-part series on the Rolls-Royce Brake Pump. In Part 3, we delve into the testing phase of the reconditioning process. Testing is a crucial element, ensuring your rebuilt brake pump functions as intended. This video shows the Rolls-Royce Corniche, Silver Shadow, Silver Shadow II, Silver Wraith II, Corniche, Bentley T1 or T2 rebuilt Brake Pump - part number UE40534HB.

Start by fitting a new shroud onto the pump, followed by lubricating it well. Focus on ensuring that the Brake Pump O-rings (UE35616-X) on the pump body are also well-lubricated. Once these steps are complete, your pump should be ready for the testing phase. This is a brand new shroud (UE35160) which would go on the pump in the car. 

Connect the brake pump feed hose to the designated circuit groove on the pump. The next steps involve filling the pump with brake fluid (RR363L1) and manipulating the plunger to draw in the fluid, which in turn, pushes up the pressure. You'll likely notice a few air bubbles upon the initial pump.

After the initial air bubbles are expelled, proceed with pressing the barrel to draw in more fluid. Feel for pressure against your finger at the top of the pump. This is an indicator that the pump is working effectively. Once the pressure is confirmed, perform a final top-up of fluid and observe it being expelled from the end.

For added assurance, observe a close-up view of the fluid being drawn into the pump. This confirms that the pump is functioning correctly and concludes the testing process.

This picture shows the main parts that Matt refers to in the video including the Seal, the housing and the pump. There are more variations of part numbers depending on chassis - please check with us which is correct for your Rolls-Royce or Bentley model.