OEM 2000 Toyota 4Runner Water Pump

2000 Toyota 4Runner Parts Questions & Experts Answers

• Q: How to Service and Repair a Water Pump on 2000 Toyota 4Runner?

  A: The water pump service requires timing belt removal followed by water inlet and thermostat detachment and afterward disconnecting the No.2 oil cooler hose before extracting the water pump. A water pump replacement should be performed when leaks are present at the water and air holes. In case coolant seeps onto the timing belt you must replace this component as well. A smooth and quiet operation of the pulley during bearing check indicates that you should replace the water pump. When inspecting the fluid coupling, start by taking off four nuts and the fan before examining for any signs of damage and silicon oil leaks. Replace the fluid coupling if necessary before reattaching the fan with 4 nuts which need to be torqued to 7.4 Nm (75 kgf-cm, 65 inch lbs.). During inspection of the fan pulley bracket check for its ability to turn smoothly and replace if needed while inspecting the timing belt as well. Installation starts with putting on the water pump while disposing the old packing material (FIPG) then verifying the surfaces stay free from oil contamination. Clean the gasket surfaces and sealing groove with a gasket scraper combined with a razor blade followed by a non-residue solvent for all components. Seal packing (Part No. 08826-00100 or equivalent) requires application to the water pump groove through a nozzle with a 2 - 3 mm (0.08 - 0.12 inch) opening during the installation process. The parts need to be assembled within 5 minutes after applying seal packing but replacement of packing material is needed if the application period exceeds 5 minutes. Immediately detach the nozzle from the tube before reinstalling the cap along with resecuring the water pump using seven bolts tightened to 20 Nm (200 kgf-cm, 14 ft. lbs.). Finish the work by connecting the No.2 oil cooler hose while installing the water inlet and thermostat and the timing belt.