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Figure - TM-9-1240-322-34-P0103
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TM-9-1240-322-34-P Sight Infinity: 8635466 (1240-00-056-4854) Manual
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INFINITY SIGHT PURGING AND CHARGING (CONT)
TM 9-1240-322-34&P
INFINITY SIGHT PURGING AND CHARGING
TOOLS: 3/16" open end wrench
3/32" socket head screw key (Allen wrench or equivalent)
Fire control purging kit
Soap
SUPPLIES:
PERSONNEL: One
Purging and charging setup
REFERENCES: JPG 4lC for:
Purging and charging shutdown
Checking for leaks
EQUIPMENT CONDITION: Infinity sight on work bench
PRELIMINARY PROCEDURES: Do purging and charging setup (JPG)
NITROGEN GAS UNDER PRESSURE
DEATH
or severe injury may result if personnel fail to observe safety
precautions listed in Job Performance Guide 113-091-9000R.
FRAME 1
Procedure
Step
Using open end wrench, remove cap (1) from valve assembly (2).
1.
2.
Using Allen wrench, remove setscrew (3) from infinity sight housing (4).
With valve (5) closed, open valve (6) until reading on high pressure gauge (7) is greater
3.
than 100 psi (JPG).
Turn valve (5) slowly clockwise until reading on low pressure gauge (8) is 5 psi.
4.
Purge with nitrogen for 5 minutes.
5.
Reduce nitrogen pressure by closing valve (8) until gauge (9) indicates .05 psi.
6.
Using allen wrench, replace setscrew (4).
7.
Use soap water to search and isolate leaks. If leaks are present fault isolate (Vol I, para
8.
4-3). If leaks are not present remove hose adapter (9) and close valve (5).
Vol II

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