TM 5-3805-262-20
5-8. SENDING UNITS AND WARNING SWITCHES MAINTENANCE (CONT)
c. Water
Temperature
Sending U n i t . This task covers removal, cleaning, inspec-
t i o n,
testing and repair, and installation of water temperature sending unit and its
associated wiring.
TOOLS: No. 1 Common Organizational Maintenance Tool Kit
Combination box and open end wrench set
Socket wrench set, 3/8 inch drive
E l e c t r i c a l r e p a i r t o o l k i t
Multimeter
MATERIALS/PARTS: Clean cloths (Appendix C, item 1)
Cleaning solvent P-D-680 (Appendix C, item 2)
Detergent (Appendix C, item 3)
Insulation tape (Appendix C, item 5)
Isopropyl alcohol (Appendix C, item 15)
Electrical cleaner (Appendix C, item 19)
Electrical sealer (Appendix C, item 20)
NOTE
PRELIMINARY PROCEDURE: Coolant drained from radiator (page 4-69) and
engine top hood removed (page 9-11).
REMOVAL
( 1 ) A t e n g i n e w a t e r m a n i f o l d, loosen and remove nut (l), lock washer (2), and
washer (3), and disconnect terminal (4) from water temperature sending
u n i t ( 5 ).
(2)
Loosen and remove water temperature sending unit (5) from bushing (6).
(3) Loosen and remove bushing (6) from water manifold only if necessary for
replacement.
CLEANING (SHEET 1 OF 2)
Dry cleaning solvent P-D-680 used to clean parts is toxic and flammable.
W e a r p r o t e c t i v e g o g g l e s a n d g l o v e s a n d u s e o n l y i n a w e l l v e n t i l a t ed
a r e a . A v o i d c o n t a c t w i t h s k i n,
e y e s a n d c l o t h e s a n d d o n ’ t b r e a t h e
vapors. Do not use near open flame or excessive heat and don’t smoke
when using it. Failure to do so could cause serious injury. If you be-
c o m e d i z z y w h i l e u s i n g c l e a n i n g s o l v e n t , g e t f r e s h a i r a n d m e d i c al
a t t e n t i o n i m m e d i a t e l y . I f c o n t a c t w i t h s k i n o r c l o t h e s i s m a d e , f l u sh
with large amounts of water.
I f c o n t a c t w i t h e y e s i s m a d e , w a s h e y e s
with water and get medical aid immediately.
(1) Wipe exterior of water temperature sending unit (5) using clean cloth
moistened with cleaning solvent P-D-680. Dry using clean cloths.
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