Screw Fastener Replacement

TM 5-6350-262-14/4

secure with 8.0-inch long spiral wrap.

(2) Compressed (closed) = normal position

(2) Twist single white wire and orange wire together

when cover is assembled to chassis.

(approximately one turn per inch); secure with 6.0-inch

(3) Extended (closed) = optional (fixed)

long spiral wrap.

setting obtained by pulling extension screw outward -

(3) Install three ties: one each approximately 1-inch

approximately 118 inch beyond position (1), above.

from- each end of spiral wrap; third one approximately

in center of bundle.

Note

(4) Bend terminals 45 to 90 (from horizontal, after

Switch pings when detent is

crimping.

actuated.

6-16 Screw Fastener Replacement

When the switch is pushed in manually,

The need to replace screw fasteners

then released, the plunger spring automatically resets

normally will occur only through loss.

the switch to position (1)

Note

To adjust the tamper switch plunger

Los or misplacement of attaching

extension, proceed as follows:

screws can be minimized by

(1) Push in, then release, the plunger

installing them loosely in the

extension screw.

assembly fitting from which they

(2) Measure projection of screw head beyond

were removed, until needed.

front edges of chassis

Replacement screw fasteners shall be

duplicates of the originals.

(3) If projection is not 3/16 inch, correct

6-17. Tamper Switch Plunger Adjustment

adjustment as follows:

The temper switch has three plunger

(a) Loosen locking nut.

(contact) positions:

(1) Free (open) = normal position when cover

(b)

Turn screw in or out, as required.

pressure is removed. (head of extension screw should

(c)

Tighten locking nut.

project approximately 3/16 inch beyond front edges of

chassis)

(4) Check function of switch (para 2-c, as

applicable), or bench check (para 2-19c as applicable)

Section IV. TESTING

PROCEDURES

6-18. General

(4) Turn on dc power supply and adjust the

This section contains test procedures for use by direct

voltage to 20 1 vdc, turn power supply to OFF.

support maintenance personnel to check the overall

operation of the Magnetic Weapon Sensor. Test

(5) Refer to figures 2-2 and 5-2 and make the

procedures for the MWS should be performed after

following connections:

each authorized repair or replacement of any

(a) Make sure the dc power supply is

component to verify that the MWS will properly operate

turned OFF. Connect a lead between the positive

tests of the batteries, PWB Assembly and the input and

terminal of the power supply and terminal 7 of the SPU.

filter assembly are also contained in this section. The

MWS may also be functionally tested as described in

(b) Connect a lead between the

paragraphs 2-9 and 2-10, when connected to JSIIDS.

negative terminal of the power supply and terminal 8 of

6-19. MWS Bench Test

the SPU.

Test Equipment and Materials.

(1) Voltohmineter, TS352 or equivalent.

ground of the power supply and terminal 9 of the SPU.

(2) D.C. Power Supply, 0 to 50 volts direct

(d) Set the voltohmmeter (VOM) to

current.

measure resistance Connect the VOM leads to terminals

(3) Test Lead

6 and 6 of the SPU.

(4) Simulated gun rack (to be fabricated)

(6) Place the weapon in the simulated gun

rack

(5) Rifle or metal rod to simulate a weapon.

(7) Install SPU cover lg.

2-5)

(6) Electrical wire (AWG 16) MILW5086A.

Test Procedure.

Initial Test Pt7paration.

(1) Turn on de power supply and make sure

(1) Simulate a gun rack.

the voltage is 20 1 vdc.

(2) Locate the SPU on the test bench

(2) Allow 5 minutes for circuit to stabile The

Remove SPU cover (fig.

2-5)

VOM should indicate less than 2K Ohms:

(3) Refer to paragraph 2-8d and install the

Loop Sensor and EOL Module. Refer to figure 1-2 for

Basic Loop Sensor Configuration.

6-6