NOTE: Coolant hoses shown removed for clarity.
Remove switch.
!
WARNING
3.
The following test involves the use of intense
heat. Failure to follow appropriate procedures or
warnings can cause burns which can result in se-
vere personal injury. While performing the fol-
lowing test, observe these general precautions:
TESTING
1.
Connect an ohmmeter between water tempera-
ture switch terminal (+) and hex (case) for ground
as shown.
(–)
•
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 instruc-
tions of the manufacturer of the heat source.
The heat source should be checked eachtime
it is used to be sure it is functioning properly.
b
a
•
The thermometer used in the test should be a
high-temperature thermometer with a maxi-
mum reading of at least 300°F (150°C). Under
no circumstances should the operator allow
temperatures to exceed test specifications.
72765
•
•
Perform test only in a well ventilated area.
a - Ohmmeter Leads
b - Water Temperature Switch
Use a suitable container, such as metal, to
hold the sand. Avoid use of glass containers
unless the operator first confirms for himself/
herself that the glass container is an appro-
priate high-temperature vessel.
2.
Switch should read no continuity.
•
Because the components will reach high tem-
peratures DO NOT handle materials or com-
ponents until COMPLETELY cooled.
Index
90-823224--2 796
INSTRUMENTATION - 4D-13
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.5 out of 5)
Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
Could not find a copy until a search brought me here.
Excellent print.
Thank you