BODY AS-CARBURETOR 4N9171 - Caterpillar

Removal Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
Drain the coolant from the cooling system to a level below the water temperature regulator, into a suitable container for storage or for disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change" for the correct draining procedure.
Illustration 1 g01985853
Typical example
Loosen the hose clamps from the upper radiator hose and disconnect the upper radiator hose from water temperature regulator housing (2).
Remove bolts (1) from water temperature regulator housing (2).
Remove water temperature regulator housing (2) from the cylinder head. Note: Note the orientation of the water temperature regulator housing.Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 2 g01985853
Typical example
Ensure that all components of water temperature regulator housing (2) are clean and free of wear and damage. If any components of the water temperature regulator housing are worn or damaged, the complete assembly must be replaced.
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 no operating correctly, the complete assembly must be replaced.
Install water temperature regulator housing (2) to the cylinder head. Note: Ensure the correct orientation of the water temperature regulator housing.
Install bolts (1). Tighten the bolts to a torque of 22 N m (195 lb in).
Connect the upper radiator hose and tighten the hose clamps securely.
Fill the cooling system to the correct level. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Check" and Operation and Maintenance Manual, "Cooling System Coolant - Change" for the correct filling procedure.