881879A 6 Mercury SENSOR, (0 - 100 PSI)

Introduction
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.Method to demonstrate Marine Alarm and Protection System to customers and Marine Certification Society surveyors using the validation Test Kit.Caterpillar recommends that the tests are performed while the engine runs at a low idle as most alarm and shutdown set points are only active while the engine is running. See the appropriate Operation and Maintenance Guide for default set points, alarm set points, and shutdown set points.This document only applies to marine engines equipped with thermowells and isolation valves.Reference Section
Reference: Tool Operating Manual, NEHS1199, Using the 453-3204 Pressure and Temperature Test GroupReference: Caterpillar Channel 1 to show how to use this tool with Wimborne Marine Classification Society (MCS) controls.
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Search "Alarm, Protection System Testing, & Adjusting".
Click the "Alarm, Protection System Testing, & Adjusting" title.Required Tools
The 453-3204 Tool Gp (Pressure and Temperature Test Group) generates pressures up to 3447 kPa (500 psi) and temperatures from ambient to 350° C (662° F).The tool group contains the following:
Thermo well unit (requires external power)
Pressure hand pump (battery powered)
Connection hose
Adaptor fittings: 12 mm JIC Male, 14 mm JIC Male, 9/16 JIC Male, 7/16 JIC Male, 7/16 JIC Female, and 16 mm sample port
Some tools for sensor removal
O-rings for sensor replacementSensor Testing
Pressure Test Procedure
Setup
While the engine is off, remove the desired pressure sensor from the engine, leaving its respective check valve in place to prevent fluid from leaking.
Connect the test kit hose to the pressure sensor.
Thread the correct adaptor fitting onto the sensor. Turn the adaptor until the seal is covered and the adaptor is firmly seated.Note: To change the units displayed, enter Menu mode and select and scroll through UNITS until the desired units are displayed. Further gauge instructions can be found in the gauge manual included in the test kit.Operation and Testing
Note: Caterpillar recommends