Water Pump: Inspection

HINT:

• Before performing this inspection, check that there is no coolant leaking from any parts other than the water pump. If there are leaks, inspect those areas.
• Perform this inspection when the engine is cold.

1. Visually inspect the engine compartment for the following conditions:
   1. There is a large amount of coolant in the engine compartment or on the underside of the hood near the fan and generator V belt.
   2. Liquid coolant is dripping from around the water pump.
   3. The coolant level in the reservoir is below the L line and there are traces of leakage around the water pump.

      If any of the above conditions exist, replace the water pump assembly.

      If none of the above conditions exist, perform the following inspection (inspection of the area around the water pump).

2. Remove the fan and generator V belt. See REMOVAL .
3. Move the water pump pulley so that the drain plug can be reached.
4. Inspect the area around the water pump.

   HINT:

   Check for deposits around the drain plug of the water pump.

   1. Press a piece of paper towel against the drain plug or deposits on the lip of the drain plug and check that the paper towel is not wet.

      If the paper towel is wet, replace the water pump assembly.

      If the paper towel is not wet, thoroughly clean the area around the water pump.

   Fig 1: Checking Drain Plug for Deposits

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Return the water pump pulley to its original position.

1. Turn the pulley and check that the water pump bearing moves smoothly and quietly.

   If necessary, replace the water pump assembly.

2. Install the fan and generator V belt. See INSTALLATION .