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Page Title:
HIGH TRANSMISSION TEMPERATURE INDICATOR DOES NOT OPERATE - continued |
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 TM 10-3930-673-20-1
RESISTANCE CHECK
(1) Remove nut, lockwasher, washer, and
wire 18 from transmission temperature
switch.
(2) Remove transmission temperature
switch from reducer.
(3) Hang transmission temperature switch
in pan of water. Do not let switch make
contact with pan.
(4) Place a thermometer in water.
(5) Put heat to pan of water and stir water
for consistent temperature of 200F
LOCKWASHER
(93.3C). Allow water temperature to
stabilize for 15 minutes.
NUT
WIRE 18
REDUCER
Do not allow fingers or skin to contact
TRANSMISSION
hot water or hot parts. Serious burns
TEMPERATURE
to personnel could result.
SWITCH
WASHER
(6) Set multimeter to ohms.
(7) Connect multimeter positive lead (+) to
stud of transmission temperature
HIGH TRANSMISSION
WIRE 18
switch.
TEMPERATURE
(8) Connect multimeter negative lead () to
INDICATOR
WIRE 10
hex or large threads of transmission
LIGHT SOCKET
temperature switch.
(a) If 115 to 140 ohms are not
measured, replace transmission
HIGH TRANSMISSION
temperature switch (Para 8-16).
TEMPERATURE
(b) If 115 to 140 ohms are measured,
INDICATOR
install transmission temperature
SCREW
switch (Para 8-16) and go to
Step 5 of this fault.
PANEL
CONTINUITY CHECK
(1) Remove four screws and panel.
(2) Connect multimeter positive lead (+) to
wire 18 at high transmission
temperature indicator terminal.
(3) Using a known good jumper wire,
connect multimeter negative lead () to
TR01505
wire 18 at transmission temperature
switch terminal.
(a) If continuity is not present, replace
wire 18 (Para 8-48).
(b) If continuity is present, go to Step 6
of this fault.
2-407
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