TM 5-2420-224-20-2
HYDRAULIC OIL COOLER THERMAL SWITCH REPLACEMENT (CONT)
NOTE
Tag
all
w i r es
prior
to
disconnecting to aid in connecting.
2.
R E M O V E t w o S C R E W S ( 5 ) a n d
DISCONNECT two WIRES (6 and 7).
3.
REMOVE SWITCH (8).
NOTE
If lower switch is to be replaced,
h y d r a u l i c o i l c o o l e r m u s t be
r e m o v e d f r o m v e h i c l e ( p a g e
4-722).
4.
R E M O V E t wo
S C R E W S ( 9)
and
DISCONNECT four WIRES (10, 11, 12, and
13).
5.
REMOVE SWITCH (14).
1.
2.
3.
4.
5.
NOTE
Procedure is the same for both
switches.
Check switch terminals (1 and 2) with
multimeter set for continuity reading.
Muitimeter reading should be open. If reading
is closed, replace switch.
Insert switch in water heated to 130°-150°F
(54.4° -65.5°F) for 30 seconds.
Remove switch from water and repeat step 1.
Multimeter reading should be closed. If
reading is open, replace switch.
4-148
