Removal And Installation

WATER PUMP

Removal and Installation


REMOVAL


CAUTION:
Do not 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 radiator cap. Slowly turn it a quarter of a turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.
1.Drain engine coolant from radiator. Refer to "Draining Engine Coolant" Draining Engine Coolant.

CAUTION:
- Perform this step when the engine is cold.
- Do not spill engine coolant on drive belt.
2.Remove front wheel and tire (RH). Refer to "Adjustment" Adjustment.
3.Remove front fender protector (RH). Refer to "Removal and Installation" Removal And Installation.
4.Loosen water pump pulley bolts before loosening belt tension of drive belt.
5.Remove drive belt. Refer to "Removal and Installation" Service and Repair.
6.Remove water pump pulley.
7.Remove water pump.





- Loosen water pump bolts in reverse order as shown.
- Engine coolant will leak from cylinder block, so have a receptacle ready below.

CAUTION:
- Do not allow water pump vane to contact any other parts.
- Water pump cannot be disassembled and must be replaced as an assembly.

INSPECTION AFTER REMOVAL






- Visually check for significant dirt or rust on the water pump body and vane (A) and replace as necessary.
- 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.





- Tighten water pump bolts in order as shown.

CAUTION:
- Do not allow the water pump vane to contact any other parts.
- Water pump cannot be disassembled and must be replaced as an assembly.
- Do not reuse gasket.
- Sealing surface must be clean and free of dents or flaws.

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: