## Cooling System

#### Water Pump and Thermostat Inspection (cont'd)

10-10

Water Pump Inspection Bearing unit inspection

1. Check the bearing unit for remarkable play in radial direction and for abnormal noise when turning the shaft.

External Inspection

1. Check the pump body for cracks.

1. Check the seal unit for leakage.

1. Check the impeller for cracks, corrosion or damage.

Thermostat Inspection

Removal

1. Remove the two bolts to the fixing water outlet pipe then remove the thermostat.

Installation

1. Install the thermostat to thermostat housing. Install the water outlet pipe and tighten fixing bolts.

Tightening torque:

24 Nm (2.4 kgf/m, 17 lbf/ft)

Specification

1. Valve opening temperatures 85 + 2°C

Valve lift:

8.0 mm

Inspection and Repair

1. Make the necessary adjustments, repairs and part replacements if excessive wear or damage is discovered during inspection.

Operating Test

1. Completely submerge the thermostat in water.

1. Heat the water. Stir the water constantly to avoid direct heat being applied to the thermostat.

1. Check the thermostat initial opening temperature.

Thermostat initial opening temperature:

85 + 2 °C

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