VALVE GP-QUICK-DROP 4T4205 - Caterpillar

Removal Procedure
Personal injury can result from hot coolant, steam and alkali.At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.Remove cooling system pressure cap slowly to relieve pressure only when engine is stopped and cooling system pressure cap is cool enough to touch with your bare hand.Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.
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.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Drain the coolant from the cooling system. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change".
Illustration 1 g00919176
Loosen hose clamp (3) .
Remove bolts (2) from water temperature regulator housing (1) .
Illustration 2 g00919177
Remove water temperature regulator housing (1) and gasket (6) from the engine. Separate water temperature regulator (5) and O-ring seal (4) from water temperature regulator housing (1) .Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 3 g00919177
Clean the mating surface of the cylinder head and water temperature regulator housing (1). Replace O-ring seal (4), water temperature regulator (5), and gasket (6) .
Illustration 4 g00919176
Position water temperature regulator housing (1) on the cylinder head. Install bolts (2) in water temperature regulator housing (1) .
Tighten hose clamp (3), and fill the cooling system with coolant to the correct level. Refer to the Operation and Maintenance Manual for the correct filling procedure.