INSTRUMENTATION - 4D-1590-823225--1 1096
INSTALLATION
1. Apply Loctite Pipe Sealant with Teflon to threads
of water temperature switch.
2. Install switch in thermostat housing and tighten
securely.
3. Connect tan/blue wire and coat connection with
Liquid Neoprene.
72613
b
a
a - TAN / BLUE Wire
b - Water Temperature Switch
4. Refill closed cooling system with approved cool-
ant as outlined in Section 6B.
Transmission Fluid Temperature
Switch
Switch is located on transmission on earlier models
and may be mounted in a fitting on transmission fluid
cooler on later models. Switch is normally open. This
switch is used on all MIE engines, if so equipped.
87-88031 Switch
Opens 180-200° F (82-93° C)
Closes 220-240° F (104-116° C)
REMOVAL
1. Disconnect harness wires at switch.
2. Remove switch and sealing washer.
72770
c
a
b
a - Transmission (Typical)
b - Transmission Fluid Temperature Switch With Sealing
Washer
c - Harness Wires
TESTING
1. Connect one lead of an ohmmeter to one terminal
of transmission switch. Connect the other lead of
ohmmeter to other terminal.
72771
b
a
a - Ohmmeter Leads
b - Transmission Fluid Temperature Switch
2. Switch should read no continuity.
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