WIRE-ELECTRICAL 8C8799 - Caterpillar

Never run an engine unless the water temperature regulators are installed. With no water temperature regulators in the system, the coolant will continually bypass the radiator and the engine will get too hot.
The vertical radiator is made with a top tank (2) above the core and a surge tank (8) above the top tank. Vent tube (7) connects radiator top tank (2) and surge tank (8).Surge tank (8) has a shunt line (4) that connects to the inlet of water pump (5). This shunt type system keeps a positive pressure on the inlet of water pump (5) at all times. When putting coolant in the cooling system, coolant from surge tank (8) goes through shunt line (4) to the inlet of water pump (5) and fills cylinder block (16) from the bottom. By filling the system from the bottom, any air in the system is pushed out through radiator top tank (2), through vent tube (7) into surge tank (8).Radiator cap (1) is used to keep the correct pressure in the cooling system. This pressure keeps a constant supply of coolant to water pump (5). If this pressure goes too high, a valve in radiator cap (1) moves (opens) to get a reduction of pressure. When the correct pressure is in the cooling system, the valve in radiator cap (1) moves down (to the closed position).Basic Block
Cylinder Block
The cylinders are a part of the cylinder block. There are no replaceable cylinder liners. The cylinders can be machined (bored) up to .040 in. (1.02 mm) oversize for reconditioning. The cylinders in the block are at a 90° angle to each other. There are five main bearings in the block to support the crankshaft.Cylinder Head
There is one cylinder head for each side (bank) of the engine. One intake and one exhaust valve is used for each cylinder. The valve guides are a part of the cylinder head and can not be replaced. A valve seat insert is used for the exhaust valve and can be replaced. When the seat for the intake valve has been machined to the limits given in the SPECIFICATIONS, it can be bored (machined) for a valve seat insert.Pistons, Rings And Connecting Rods
The pistons have two rings which are located above the piston pin bore. There is one compression ring and one oil control ring. The oil ring is made in one piece and has an expansion spring behind it. The compression ring is also one piece and goes into an iron band that is cast into the piston.The piston pin is held in the piston by two snap rings which go into grooves in the piston pin bore.The connecting rod is installed on the piston with the boss on the connecting rod on the same side as the crater in the piston. The connecting rod bearings are held in location with a tab that goes into a groove in the connecting rod.Crankshaft
The force of combustion in the cylinders is changed to usable rotating power by