SERVICE MANUAL NUMBER 23
INSTRUMENTATION
WARNING
The following test involves the use of intense heat. Failure to follow appropriate
procedures orwarningscancauseburnswhichcanresultinseverepersonalinjury.
While performing the following test, observe these general precautions:
•
Wear personal protective clothing such as rubber gloves, a non-flammable
apron, and eye protection - preferably full face shield or safety glasses.
•
The appropriate heat source should only be electric. Heat source should be
operated by a qualified person. Be sure to follow all instructions of the
manufacturer of the heat source. The heat source should be checked each time
it is used to be sure it is functioning properly.
•
The thermometer used in the test should be a high-temperature thermometer
with a maximum reading of at least 300°F (150°C). Under no circumstances
should the operator allow temperatures to exceed test specifications.
•
•
Perform test only in a well ventilated area.
Use a suitable container, such as metal, to hold the water. Avoid use of glass
containers unless the operator first confirms for himself/herself that the glass
container is an appropriate high-temperature vessel.
•
Because the components will reach high temperatures DO NOT handle
materials or components until COMPLETELY cooled.
2.
Follow these instructions:
a. With ohmmeter connected as outlined and using suitable container, thermometer
and heat source, suspend sender with tip in water.
b. Heat water and observe thermometer.
c. As temperature rises ohmmeter readings must be within the ranges specified for
each temperature (see chart below).
d. Turn heat source off. Allow water and components to cool.
NOTE: While water cools you may recheck ohmmeter readings.
e
d
b
a
c
72769
a - Suitable Container
b - Thermometer
c - Heat Source
d - Water Temperature
e - Ohmmeter Leads
90-861326--1
MARCH 1999
Page 4D-11
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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