Disassembly and assembly

Illustration 165 g02829476
Typical example
3. Loosen the hose clamps from the upper radiator
hose and disconnect the upper radiator hose from
water temperature regulator housing (1).
4. Loosen clamp (3) and disconnect exhaust gas
recirculation (EGR) cooler hose (2) from water
temperature regulator housing (1). Position the
EGR cooler hose away from the water
temperature regulator housing.
5. Slide the locking tab into the unlocked position and
disconnect the wiring harness from coolant
temperature sensor (4).
6. Remove bolts (6) and remove bolts (7) from water
temperature regulator housing (1).
7. Remove water temperature regulator housing (1)
from the cylinder head.
8. Remove gasket (5) (not shown).
9. If necessary, remove the coolant temperature
sensor. Refer to Disassembly and Assembly,
“Coolant Temperature Sensor - Remove and
Install” for the correct procedure.
Installation Procedure
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened
component life.
1. Ensure that all components are clean and free of
wear and damage. If necessary, replace any
components that are worn or damaged.
2. Check the water temperature regulator for correct
operation. Refer to System Operation, Testing,
and Adjusting, “Water Temperature Regulator -
Test” for the procedure to test the water
temperature regulator. If the water temperature
regulator is not operating correctly, the complete
assembly must be replaced.
3. If necessary, install the coolant temperature
sensor. Refer to Disassembly and Assembly,
“Coolant Temperature Sensor - Remove and
Install” for the correct procedure.
Illustration 166 g02829476
Typical example
4. Position gasket (5) (not shown) onto water
temperature regulator housing (1).
Note: Ensure that the gasket is correctly orientated.
5. Install bolts (7) to water temperature regulator
housing (1).
6. Position water temperature regulator housing (1)
onto the cylinder head.
7. Install bolts (6) to the water temperature regulator
housing finger tight.
8. Tighten the bolts (6) and bolts (7) to a torque of
25 N·m (221 lb in).
9. Connect hose (2) to the water temperature
regulator housing and tighten clamp (3) securely.
UENR0624-03 97
Disassembly and Assembly Section
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