OEM 2000 Toyota 4Runner Water Pump

2000 Toyota 4Runner Water Pump Parts Q&A

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

  A: Start the water pump service and repair procedure by removing the engine under cover followed by draining engine coolant. Detach the air pipe through removal of two bolts from the fan shroud before disconnecting the upper radiator hose from the radiator. You should remove the oil dipstick guide through the steps of bolt removal and dipstick guide and engine wire bracket extraction and separate the O-ring from the dipstick guide while you will need to install a new O-ring when you reconstruct it. The removal of drive belt from the PS pump starts with loosening both the adjusting bolt and lock bolt. Place a fan shroud to the side after removing the 2 clips along with No. 2 fan shroud and then loose the 4 bolts that secure No. 1 fan shroud. If your model includes an A/C system then keep the idler pulley loose by unscrewing both the nut and adjusting bolt to disassemble the drive belt for the A/C compressor. After stretching the belt workers can detach the water pump pulley nuts while loosening next the lock and pivot and adjusting bolts of the generator to remove the drive belt. Pull out the fan and fluid coupling with water pump pulley by removing the water pump pulley nuts with 21 Nm torque (210 kgf-cm, 16 ft. lbs.). The procedure to remove the water pump requires 10 bolt removal together with the pump and gasket while tightening the 14 mm head bolts to 24.5 Nm (250 kgf-cm, 18 ft. lbs.) during removal and the 12 mm head bolts to 8.9 Nm (90 kgf-cm, 78 inch lbs.). Always use a new gasket when reinstalling the water pump. Examine the coolant for leaks at the pumping drain and air hole openings of the water pump along with a smooth and non-noisy operation of the bearing. Replace the water pump unit if necessary. Inspection of fluid coupling requires first removing its 4 nuts together with the fan. Next, check for damage alongside silicon oil leakage. Replace the fluid coupling when necessary before installing the fan and fluid coupling using 4 nuts torqued at 5.5 Nm (55 kgf-cm, 49 inch lbs.). The installation process should follow the opposite sequence used during removal.