BOSS-MOUNTING 5219460 - Caterpillar

Introduction
When the words "use again" are in the description, the specification given can be used to determine if a part can be used again. If the part is equal to or within the specification given, use the part again.When the word "permissible" is in the description, the specification given is the "maximum or minimum" tolerance permitted before adjustment, repair and/or new parts are needed.A comparison can be made between the measurements of a worn part and the specifications of a new part to find the amount of wear. A part that is worn can be safe to use if an estimate of the remainder of its service life is good. If a short service life is expected, replace the part.Electrical System
Components
Water Temperature Contactor
A water temperature contactor switch is located in the cooling system. This unit is non-adjustable. Thermal expansion of the element operates a micro-switch that can be used to signal an operator or control a device. The water temperature element must be in contact with the coolant. After an overheated engine is allowed to cool, the contactor automatically resets itself.Oil Pressure Switch
An oil pressure switch is located in the oil system. This switch has three terminals and can serve a dual purpose. This switch senses the oil pressure. When the oil pressure falls below a preset pressure the switch deactivates. When the pressure rises again beyond a preset pressure the switch reactivates. This switch can be used to signal an operator that the engine oil pressure has dropped.