Mercury MerCruiser D2.8L D-Tronic Service Manual page 425

SERVICE MANUAL NUMBER 22
e. Heat sand and observe temperature on thermometer.
f.
g. Turn heat source OFF. Allow sand and components to cool.
INSTALLATION
1. Apply Perfect Seal to threads of switch / sender.
2. Counter-hold the adaptor with a separate wrench and install the switch / sender and
sealing washer.
3. Torque the switch / sender to the adapter. Maximum torque is 25 Nm (18 lb-ft). Do NOT
overtorque.
4. Connect harness wiring. Apply liquid neoprene to the terminals.
5. Refill closed cooling system.
90-860074--1 FEBRUARY 2002
71772
a - Suitable Container
b - Thermometer
c - Heat Source
d - Water Temperature Switch/Sender
e - 12 Volt Power Source and Jumper Leads
f - Audio Warning Alarm With Jumper Lead
Replace switch / sender if it does not close (alarm ON ) within the range of
temperatures indicated in chart below.
Test Temperature
102 - 106 Degrees C (215 - 220 Degrees F.)
e
d
a
c
INSTRUMENTATION
b
Switch Condition
Closed
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