Removal And Installation

WATER PUMP

Removal and Installation


WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure engine coolant escaping from the radiator. Wrap a thick cloth around the cap. Slowly turn it a quarter of a turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.

CAUTION:
- When removing water pump assembly, be careful not to get coolant on drive belt.
- Water pump cannot be disassembled and should be replaced as a unit.
- After installing water pump, connect hose and clamp securely, then check for leaks using a radiator cap tester.

REMOVAL

1.Drain engine coolant from the radiator. Changing Engine Coolant.

CAUTION:
Perform this step when the engine is cold.
2.Remove RH wheel and tire assembly. Adjustment.
3.Remove the front air duct. Service and Repair.
4.Remove the generator and bracket. Service and Repair.
5.Remove engine ground strap.
6.Remove the water pump.
NOTE:
If necessary, the exhaust manifold catalytic convertor assembly must be removed to remove the water pipe.

CAUTION:
- Handle the water pump vane so that it does not contact any other parts.
- Water pump cannot be disassembled and should be replaced as an assembly.

INSPECTION AFTER REMOVAL






- Visually check that there is no significant dirt or rusting on the water pump body and vane.
- Make sure that there is no looseness in the vane shaft, and that it turns smoothly when rotated by hand.
- Replace the water pump, if necessary.

INSTALLATION

- Installation is in the reverse order of removal.
- When inserting water pipe end to cylinder block, apply a mild soap to the O-ring. Then insert it immediately.

WARNING:
Do not reuse O-ring or gaskets.

INSPECTION AFTER INSTALLATION

- Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required quantity, fill to the specified level.
- Use procedure below to check for fuel leakage.
- Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leakage at connection points.
- Start engine. With engine speed increased, check again for fuel leakage at connection points.
- Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after hydraulic pressure rises.
- Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including engine oil and engine coolant.
- Bleed air from passages in lines and hoses, such as in cooling system.
- After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to specified level, if necessary.
- Summary of the inspection items: