ELBOW AS 2085149 - 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.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
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.
Drain the coolant from the cooling system into a suitable container for storage or for disposal.
Use hole (4) to remove tension from the V-belt.
Illustration 1 g01004978
Loosen bolts (3) and (6) on idler pulley assembly (7). Note: For information on the reusability of idler pulley assembly (7), refer to Guideline For Reusable Parts And Salvage Operations, SEBF8046, "Cast Iron and Steel Pulleys".
Remove water pump V-belt (5).
Loosen hose clamps (1). Disconnect the hose assembly between the water pump and the water temperature regulator housing.
Remove bolts (2) that hold the water pump to the front of the engine. Carefully remove the water pump and two O-ring seals from the front of the engine.