If your espresso machine runs, warms up, and makes a faint clicking or vibrating noise, but no water pumps into the system at all, your internal vibratory pump is likely dead or seized.
This part is highly prone to wear from heavy use or damage from scale deposits left by hard water. Replacing it yourself bypasses the costly out-of-warranty manufacturer repair loops.
⚙️ Core Part Specifications
| Attribute | Detail |
| Appliance Brand | Breville (US, Canada, Australia) / Sage (UK, Europe) |
| Machine Model | Barista Express (BES870 / BES870XL) |
| Common Symptom | Pump motor hums/clicks but creates 0 bar pressure; low or entirely non-existent water flow. |
| Official Part Number | SP0001817 |
| Generic Equivalent | Ulka EX5 (15 Bar Vibratory Pump) |
| Est. Replacement Cost | $25 – $35 USD / £20 – £30 GBP |
| Difficulty Level | Medium (Requires handling high-pressure o-rings and tube pins) |
⚡ CRITICAL: Regional Voltage & Frequency Matching
Do not order a generic pump blindly. Vibratory pumps rely directly on the electrical frequency (Hz) and voltage of your household grid to oscillate the internal piston correctly.
- 🇺🇸 🇨🇦 US / Canada Models (Breville): Requires an Ulka EX5 120V / 60Hz (Model:
EX5 120V 60Hz 41W). - 🇬🇧 🇪🇺 UK / Europe Models (Sage): Requires an Ulka EX5 230V / 50Hz (Model:
EX5 230V 50Hz 48W). - 🇦🇺 New Zealand / Australia Models (Breville): Requires an Ulka EX5 240V / 50Hz (Model:
EX5 240V 50Hz 48W).
🛠️ Step-by-Step Replacement Sequence
Make sure the machine is completely unplugged and cool to the touch before opening the outer shell.
1.Open the Chassis & Locate the Pump:10 mins.
Follow the standard disassembly guide to remove the back and top metal panels. The pump is the large red cube nested inside a black rubber dampening sleeve right at the lower back corner of the machine.
2.Disconnect Power & the Thermal Fuse:5 mins.
Unplug the electrical spade connectors from the pump terminals. Important: Slide the small white thermal fuse sleeve off the old pump body and save it. You must mount this clip-on fuse onto the plastic casing of your new pump.
3.Disconnect the Water Hoses:5 mins.
Pull the clear intake water line off the plastic barb inlet. On the brass outlet side, carefully slide out the metal hairpin clip holding the high-pressure Teflon tube in place. Gently pull the line free, keeping track of the tiny internal rubber o-ring.
4.Swap the Pump inside the Sleeves:5 mins.
Slide the old pump out of its soft rubber dampening mounts. Push your new Ulka EX5 right back into the rubber housing to ensure it remains isolated and quiet during extractions.
5.Reassemble & Check for Leaks:10 mins.
Reattach the water lines. Push the high-pressure tube fully home into the brass fitting before sliding the hairpin clip back on. Reconnect the power lines and thermal fuse. Fire up the machine with the panels off to run a manual flushing cycle, watching closely for leaks at the joint connections.
🛒 Where to Source the Alternative Part
Because the Ulka EX5 is an industry standard used by dozens of espresso machine companies, it is exceptionally cheap to find online. Search Amazon, eBay, or dedicated home appliance repair outlets directly for Ulka EX5 paired with your country’s required voltage (e.g., Ulka EX5 120V).