Worcester Bosch Motor Pump Coupling 87161565340

The motor pump coupling is the drive link between the pump motor and the pump body on Worcester Bosch oil-fired appliances. It transmits rotation from the motor shaft to the pump, absorbing a small amount of misalignment and vibration in the process. This coupling is supplied under Worcester Bosch part number 87161565340 and is listed against Danesmoor and Greenstar Heatslave appliance families.

• Rhythmic knocking or rattling from the pump area while the burner is running
• Pump motor spinning without the pump turning, or the pump failing to build pressure
• Visible wear, cracking or perishing of the coupling insert
• Black rubber debris or swarf found around the motor and pump coupling housing
• Excessive vibration through the pump assembly that worsens as the appliance heats up

• Confirm the appliance model and serial number against the compatibility list before ordering, as the coupling is not shared across every Worcester Bosch oil appliance
• Check the existing coupling and pump shaft for wear or damage, since a failed coupling often points to a misaligned or worn pump assembly
• Have the appliance reassembled and commissioned by a competent oil heating engineer, as the burner and combustion settings must be checked after any work on the pump assembly