TM-9-1040-267-20-P
LAUNCHER, GRENADE, SMOKE: SCREENING, RP, M243; RP, M257; RP, M259
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)
FEBRUARY 1984
TM-9-1040-267-20-P - Page 23 of 108
Step
5.
Remove cover plate from discharger base (p 2-15). Open discharger. With range switch on RX1000,
touch red probe prod on pin C (ground) of electrical receptacle connector. Touch black probe prod on
Unpainted” surface inside discharger base (4).
a. If meter reads zero (0) on OHMS scale, no fault.
Go to step 6.
b. If meter reads infinity (z) on OHMS scale, ground circuit
is open.
Replace ground wire. Remove and install (p 2-44),
then go to step 6.
Step
6.
With range switch on RX1000, touch red probe prod on each large
nut (5). Touch black probe prod on unpainted surface inside dis-
charger base (4).
a. If meter reads zero (0) on OHMS scale for all four
checks, no fault.
None. No further tests required.
b. If meter reads infinity (x) on OHMS scale for any of four
checks, ground circuit is open.
Remove electrical contact (p 2-15).
Clean electrical contact and inside discharger tube,
using cloth (item 2, app D) and RBC (item 1, app D).
Reinstall electrical contact (p 2-17) and go to step 7.
Step
7.
With range switch on RX1000, touch red probe
prod on each large nut (5). Touch black probe
prod on unpainted surface inside discharger
base (4).
a. If meter reads zero (0) on OHMS
b.
scale
for all four checks, no fault.
None. No further tests required.
If meter reads infinity (z) on OHMS
scale, electrical contact is faulty.
Replace electrical contact.
Remove and install (p 2-15).
TM 9-1040-267-20&P
2-9
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