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.
NOTE:
When removing components such as hoses, or tubes/lines, etc., cap or plug openings to prevent fluid from spilling.

REMOVAL

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

CAUTION:
Perform this step when the engine is cold.
2.Remove the generator. Service and Repair.
3.Remove radiator hose (lower). Component.
4.Disconnect the CVT fluid cooler hose from the thermostat housing (CVT models).
5.Remove water pump.

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 for significant dirt or rust on the water pump body and vane (A).
- Check that the vane shaft turns smoothly by hand and is not excessively loose.
- Replace the water pump assembly if the water pump does not perform properly.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:
Do not reuse gasket.

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: