How to Replace Timing Belt & Water Pump 2001-2007 Volvo V70

Introduction

This tutorial provides a comprehensive guide on how to replace the timing belt and water pump on a 2001-2007 Volvo V70. A failing water pump can lead to coolant leaks and engine overheating. By following these steps, you can ensure your engine runs smoothly and efficiently.

Step 1: Prepare the Vehicle

• Gather Tools Needed:
  • 18mm Wrench
  • 10mm Socket
  • 14mm Socket
  • 15mm Socket
  • 19mm Socket
  • 30mm Socket
  • 1/2 Inch Impact Gun
  • 3/8 Inch Impact Gun
  • T25 Socket
  • 1/2 Inch Breaker Bar
  • Socket Extensions
  • Torque Wrench
  • 6mm Allen Wrench
  • Razor Blade or Gasket Scraper
  • Rubber Mallet
• Drain the Coolant:
  • Locate the radiator petcock on the driver’s side next to the lower radiator hose.
  • Use a deep 13mm socket to loosen the petcock. Let the coolant drain into a bucket and then close the petcock tightly.

Step 2: Remove the Wheel and Access the Engine

• Remove the Front Wheel:
  • Take off all five lug bolts and remove the wheel.
• Remove the Fender Liner:
  • Remove the two 10mm nuts securing the fender liner (if applicable) and fold the liner out of the way. Secure it with a bungee cord if necessary.

Step 3: Access the Timing Belt

• Loosen the Harmonic Balancer Bolt:
  • Use a 30mm socket to slightly loosen the harmonic balancer bolt, leaving it in place but not tightened.
• Clear the Work Area:
  • Remove the coolant overflow and power steering reservoir by releasing their tabs and disconnecting the hoses.
• Remove the Serpentine Belt:
  • Use a 14mm socket to release tension from the tensioner pulley and remove the serpentine belt.

Step 4: Remove the Timing Belt Covers

• Remove Upper Timing Cover:
  • Take out the two T30 bolts and pry the cover off.
• Remove Lower Timing Cover:
  • Remove the 10mm bolt securing the lower timing cover and take it off carefully.

Step 5: Set the Engine to Top Dead Center

• Align Timing Marks:
  • Use a 30mm socket to rotate the crankshaft clockwise until all timing marks on the cam sprockets and crankshaft align.

Step 6: Remove the Timing Belt

• Remove the Tensioner:
  • Loosen the 12mm bolt on the tensioner and use a 6mm Allen wrench to turn the tensioner clockwise to relieve tension on the timing belt.
• Remove the Timing Belt:
  • Once the tension is released, remove the timing belt.

Step 7: Replace the Water Pump

• Remove the Old Water Pump:
  • Unscrew all 10mm bolts holding the water pump and remove it carefully.
• Clean the Surface:
  • Use a razor blade to scrape off any old gasket material from the engine surface, ensuring it’s clean for the new pump.
• Install the New Water Pump:
  • Place the new water pump and the gasket onto the engine. Secure it with new bolts, tightening them to 17 Newton meters in a cross pattern.

Step 8: Install the New Timing Belt

• Position the New Timing Belt:
  • Install the new timing belt starting from the crankshaft, ensuring it’s aligned with the timing marks you set earlier.
• Reapply Tension:
  • Reinstall the tensioner while ensuring the tab is in the correct position based on the engine's temperature. Tighten the tensioner bolt to 20 Newton meters.

Step 9: Reassemble the Engine Components

• Reinstall Harmonic Balancer:
  • Reinstall the harmonic balancer, ensuring it’s secured with the spring washers and bolts.
• Reattach Timing Covers:
  • Reinstall both timing covers, ensuring all tabs are properly seated.

Step 10: Reinstall the Serpentine Belt and Components

• Reinstall Serpentine Belt:
  • Follow the routing diagram to install the serpentine belt around the crankshaft, alternator, and other pulleys.
• Reconnect All Reservoirs:
  • Reconnect the coolant overflow and power steering reservoirs, ensuring all hoses are secure.

Conclusion

You have successfully replaced the timing belt and water pump on your Volvo V70. Make sure to double-check all connections and torque specifications before starting the engine. After completing the installation, fill the coolant and bleed the system as needed. Finally, take your vehicle for a test drive to ensure everything is functioning properly.