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Water Pump Replacement
 
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Pelican Technical Article:

Water Pump Replacement

Jared Fenton

Time:

5 hours5 hrs

Tab:

$80

Talent:

*****

Tools:

10mm socket and u-joint/extensions, floor jack

Applicable Models:

Volvo C30 T5 (2008-13)
Volvo C30 T5 R-Design (2008-13)

Parts Required:

Water pump

Hot Tip:

Use a floor jack to position the engine for better access to the mounting bolts and to remove the pump from the engine bay

Performance Gain:

Better engine cooling

Complementary Modification:

Replace timing belt

A failing water pump usually manifests itself in a few different ways. One is an engine that overheats at idle, but cools normally at higher RPMs. Another failure mode is seeing some coolant weeping from the pump housing itself. This is usually indicative of a failing front seal on the pump. Other times, the bearing in the water pump will be noisy, indicating a pending failure. If you notice any of these with your vehicle, don't waste time. Replace the pump as soon as possible. You risk blowing the head gasket on the car if the car is left to overheat.

On average, water pumps usually last around 80 to 100K miles. The life of the pump is typically extended with regular coolant flushes. The coolant itself has an additive package that helps to prevent corrosion to the pump. This is another good reason to replace the coolant in your engine every two years.

In this article, I'll go over the steps involved with changing the water pump on your C30. Unfortunately, replacing the water pump requires you to remove the front left tire, wheel liner, coolant expansion tank, the left engine mount and also the timing belt. The water pump is located directly below the exhaust camshaft sprocket. You'll also need to drain the coolant from the engine. See our articles on Jacking up Your C30, Front Wheel Liner Removal, Timing Belt Replacement and Coolant Flush and Replacement for more information.

The water pump is directly driven by the timing belt. For this reason, a lot of people will sell a water pump along with the timing belt as part of a kit. It is beneficial to change both at the same time while you're in there, especially if you don't know the history of the pump.

Shown here is the location of the water pump on your Volvo C30 (green arrow).
Figure 1

Shown here is the location of the water pump on your Volvo C30 (green arrow). Gaining access to the pump requires quite a few components to be removed from the engine for access. I recommend reading our articles: Jacking up Your C30, Front Wheel Liner Removal, Timing Belt Replacement and Coolant Flush and Replacement for more information.

Shown here are the locations of the 10mm water pump mounting bolts.
Figure 2

Shown here are the locations of the 10mm water pump mounting bolts. The lower three bolts (green arrows) are more easily removed from the bottom, while the upper four bolts (yellow arrows) are easier to get at from the top. You'll need to use a combination of a shallow 10mm socket along with a u-joint and an extension to get all of them out.

Carefully lower the engine down enough to allow the pump to be withdrawn from the side of the engine.
Figure 3

Carefully lower the engine down enough to allow the pump to be withdrawn from the side of the engine.

It is a very tight fit, but the pump can be withdrawn from the side as shown here.
Figure 4

It is a very tight fit, but the pump can be withdrawn from the side as shown here. You may need to play around with the jack height a while to get the optimum position for removal.

Be sure to clean the remnants of the old gasket (green arrow) from the mounting surface.
Figure 5

Be sure to clean the remnants of the old gasket (green arrow) from the mounting surface. I recommend using a bit of carb cleaner, then gently scraping the rest of the gasket off. Take care not to scratch or gouge the mating surface. It's ok if a little green coloring remains. You just need to get the surface flush and smooth. Install a new gasket in place of the old one and fit the new pump into place.

After the timing belt and other components have been re-installed, use a vacuum style coolant bleeder to purge the system of air prior to adding coolant.
Figure 6

After the timing belt and other components have been re-installed, use a vacuum style coolant bleeder to purge the system of air prior to adding coolant.

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