TM 5-3805-262-20
5-8. SENDING UNITS AND WARNING SWITCHES MAINTENANCE (CONT)
e. Clutch Pressure Switch (cont).
CLEANING
Dry cleaning solvent P-D-680 used to clean
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 nd
parts is toxic and flammable.
use only in a well ventilated
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
v a p o r s .
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 a l
a t t e n t i o n i m m e d i a t e l y .
If contact with skin or clothes is made, flush
w i th
with
(1)
(2)
(3)
( 4 )
INSPECTION,
(1)
(2)
( 3)
(4)
(5)
5-130
l a r g e a m o u n t s o f w a t e r . 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
water and get medical aid immediately.
Wipe exterior of clutch pressure switch (3) using clean cloth moistened
with cleaning solvent P-D-680. Dry using clean cloths.
Clean wire insulation using clean cloth moistened with detergent. Dry
using clean cloth.
Clean resistor (5), spade terminals (1 and 2), and fuseholder (4)
contacts using clean cloth moistened with isopropyl alcohol.
Clean all other metallic parts using clean cloth moistened with cleaning
solvent P-D-680. Dry using clean cloths.
TESTING, AND REPAIR
Inspect switch (3) wires and wiring harness
cracked or broken insulation or broken wire
terminal (2) wires for
strands at connection to ter-
minal. Repair cracked or broken insulation by applying insulation tape to
area. If broken wire strands are seen, cut wire as close to terminal as
possible. Strip 1/4 inch insulation from end of wire taking care not to
cut through wire then crimp new terminal securely onto wire.
Inspect clutch pressure switch (3) for cracks, breaks, damaged threads,
distortion, or other damage. Connect multimeter between switch terminals
(1) and check for continuity.
If continuity is not obtained or any of the
above conditions are seen, replace clutch pressure switch.
Inspect fuseholder (4) for cracks, breaks, distortion, or other damage.
Replace fuseholder by cutting wires as close to fuseholder halves as pos-
s i b l e, stripping 1/4 inch insulation from end of wires, then splicing new
fuseholder wires to existing wires using insulated crimp connectors .
Inspect resistor (5) for cracks, breaks, and discoloration due to over-
heating. Connect multimeter between ends of resistor. Multimeter should
indicate 36 to 44 ohms. Replace resistor if any of the above conditions
are observed or if proper multimeter indication is not obtained .
Inspect remaining parts for cracks, breaks, distortion, or damaged
t h r e a d s; replace as necessary.
