Water Pump: Service and Repair

Coolant Pump & Thermostat Removing and Installing

Note:
Refer to "Overview of Engine Side Components" for Location and the "Component View With Notes" sections during removal and installation procedures.





Overview of Engine Side Components
1 0-Ring
2 Bolt
3 From expansion tank
4 Retaining clip
5 Engine Coolant Temperature (ECT) sensor -G62- or sensor for engine temperature -G27- ^ With Engine Coolant Temperature (ECT) sensor - G2-
6 Coolant hose - Engine code AHU: to EGR cooler, Engine codes MZ, 1Z: to heater core
7 Not applicable for USA/Canada
8 From heater core
9 To expansion tank
10 Bracket
11 Coolant line
12 Oil cooler
13 From bottom of radiator
14 Bolt
15 Bracket - For ribbed belts without tensioner
16 Bolt
17 V-Belt/Ribbed belt
18 Engine Coolant Pump
19 To top of radiator




Component View With Notes
1 Bolt. Torque Specification: 25 Nm (18 ft. lbs.).
2 Pulley - Ribbed Drive Belt version.
3 Engine Coolant Pump - Check shaft for ease of movement.
4 Gasket - Always replace.
5 Coolant Thermostat
Checking:
Heat-up thermostat in boiling water
Opening commences approx: 85°C (185°F).
Ends approx: 105°C (221°F).
Opening lift: 7 mm minimum.
6 Elbow Connection
7 O-ring - Always replace.
8 Retaining Clip
9 Bolt. Torque Specification: 10 Nm (7 ft. lbs.).
10 Thermostat Flange
11 Pulley - V-Belt version