Our technical series continues with a deep dive into one of the more approachable maintenance jobs on the SY-generation Rolls-Royce and Bentley – replacing the water pump. Whether you’re curious about how the professionals handle it or thinking of tackling it yourself, this guide offers practical insight and expert advice.

Recognising the Signs of a Failing Water Pump

Is your engine running hot? Have you noticed coolant leaks or heard grinding or whining noises from under the bonnet? These are classic indicators that your water pump may be on its way out. It’s an essential component in the cooling system, and if it fails completely, driving any further risks severe engine damage. If you suspect a blown pump, stop immediately.

In our example, the 1969 Rolls-Royce Silver Shadow’s water pump hadn’t completely failed, but it was certainly past its best. The mating face was corroded, the internal components were deteriorating, and the bearings were close to giving up. The belts, however, were in good condition, so for this test car, we reused them. For your own vehicle, it’s wise to consider fitting new belts while you’re at it. For coolant, we used Flying Spares’ own-brand Premium PHC Green.

The Replacement

The replacement unit came from Flying Spares’ in-house range of reconditioned water pumps, available directly from stock. Each pump is fully stripped, precision-machined back to as-new condition, and rebuilt using brand-new seals and bearings. Old pumps can also be returned for reconditioning—a clean, sustainable way to keep classic cars running without waste.

An experienced technician can typically complete a water pump replacement on a Silver Shadow in just a few hours. However, this is not a job to rush. Take your time, follow each step carefully, and ensure the engine is completely cool before starting.

A Few Important Notes

Our technical guides are designed for general reference only. Always refer to your owner’s manual for model-specific details. And, of course, safety comes first—use the correct personal protective equipment (PPE), handle tools carefully, and dispose of fluids and waste responsibly.

Good luck, take your time, and as always—mind your head!

Read more about our in-house reconditioned water pumps

Click the links for the step-by-step guide

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