74009 Mercruiser THERMOSTAT HOUSING

Personal injury can result from contact with refrigerant.Contact with refrigerant can cause frost bite. Keep face and hands away to help prevent injury.Protective goggles must always be worn when refrigerant lines are opened, even if the gauges indicate the system is empty of refrigerant.Always use precaution when a fitting is removed. Slowly loosen the fitting. If the system is still under pressure, release it slowly in a well ventilated area.Personal injury or death can result from inhaling refrigerant through a lit cigarette.Inhaling air conditioner refrigerant gas through a lit cigarette or other smoking method or inhaling fumes released from a flame contacting air conditioner refrigerant gas, can cause bodily harm or death.Do not smoke when servicing air conditioners or wherever refrigerant gas may be present.Use a certified recovery and recycling cart to properly remove the refrigerant from the air conditioning system.
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 allow sufficient time for the cooling system to cool.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.
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Recover the refrigerant. Refer to Service Manual, SENR5664, "Air Conditioning and Heating R-134a for All Caterpillar Machines" for the recovery and the charging procedures. Refer to Special Publication, "Dealer Service Tools Catalog", "Air Conditioning Tools" for the correct tools.
Drain the coolant. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the correct draining and filling procedures.
Drain the hydraulic oil. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change" for the correct draining and filling procedures.
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Disconnect hose assembly (1) and hose assemblies (2).
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Loosen clamps (3) and disconnect hose (4). Position hose (4) back onto the tube assembly and away from the cooling package.
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Loosen clamps (5) and disconnect hose (6). Position hose (6) back onto the tube assembly and away from the cooling package.
Disconnect hose assembly (7).
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Disconnect hose assemblies (8) and hose assemblies (9).
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Loosen clamps (10) and disconnect hose (11). Position hose (11) back onto the tube assembly and away from the cooling package.
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Loosen clamp (12) and disconnect hose (13).
Loosen clamps (14) and disconnect hose (15). Position hose (15) back onto the tube assembly and away from the cooling package.
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Disconnect hose assemblies (16).
Remove bolts (17) and position hose assemblies (16) out of the way.
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Remove pins (18).
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Attach a suitable lifting device to cooling system package (radiator, aftercooler, hydraulic oil cooler) (19). The weight of cooling system package (radiator, aftercooler, hydraulic oil cooler) (19) is approximately 272 kg (600 lb)