TM 9-4120-411-14
4.34 MAGNETIC PROXIMITY SWITCH (S1) REPLACEMENT.
THIS TASK COVERS
a. Removal
b. Installation
INITIAL SETUP:
Tools
Materials/Parts
General Mechanics Tool Kit
Marker Tags (qty 2)
Lock Washers (qty 2)
Tiedown Straps (qty 3)
Splices (qty 2)
WARNING
Rotating parts and lethal voltage levels are used in operating the FDECU. Be sure
power source is disconnected. Injury or death can occur if connected to power
source.
(1) Shutdown the FDECU per paragraph 2.4 and disconnect it from power source.
WARNING
The FDECU cover is heavy. Be sure the cover retaining rod is in place and
properly secured with hair pin cotter. Injury can occur if cover drops.
(3) Cut and remove three tiedow n straps (1) securing magnetic proximity switch (2) leads. Discard tiedown
straps.
(4) Tag the magnetic proximity switch (2) leads at connection points then cut off and discard two splices (3) to
disconnect leads.
(5) Remove two nuts (4), lock washers (5), flat washers (6), screws (7), flat washers (8), and magnetic
proximity switch (2). Discard lock washers.
(1) Install magnetic proximity switch (2) and align mounting holes. Secure with two flat washers (8), screws (7),
flat washers (6), new lock washers (5), and nuts (4).
Remove tags.
(3) Secure magnetic proximity switch (2) leads with three tiedown straps (1). Cut to remove excess tiedown
strap material.
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