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TM 10-4930-248-13&P
5-3.
CCR NOZZLE,
PISTON
MODEL,
ASSEMBLY
REPAIR
- continued.
WARNIN
Drycleaning
solvent, P-D-680 Type III, used to clean parts is potentially
dangerous
to personnel and property. Use in a well ventilated area as the fumes
are dangerous
if inhaled. Avoid repeated and prolonged skin contact. Do not use
near open flame or excessive heat. Flash point of solvent is 138'F.
NOTE
There shall be no evidence of leakage during flow conditions,
binding, valve
chatter, distortion,
or requiring excessive force at connecting and disconnecting
of
the nozzle to the test adapter.
(2) Pressure test with nozzle in the OPEN (flow) position.
(a)
Position nozzle handle (1) in the CLOSED (no flow) position and connect nozzle assembly (9) to
test adapter outlet (2) and test adapter inlet (3).
(b)
Close valve (8) and move. nozzle handle (1) to the OPEN (flow) position.
(c)
Adjust pump (5) to 5 psig at the nozzle inlet gage (4) and maintain pressure for I minute maximum.
(d)
Slowly increase pump (5) pressure to 90 psig at gage (4) and maintain pressure
1 minute minimum.
(e)
Reduce pump (5) pressure to 20 psig and open valve (8).
(f) With nozzle handle (1) in the OPEN (flow) position, remove nozzle from adapter (2). There shall be
no evidence of leakage from the nozzle discharge
end.
(g)
Move nozzle handle (1) to the CLOSED
(no flow) position and reduce pump (5) pressure
to zero.
(3)
Pressure
test with nozzle in the CLOSED (no flow) position.
(a)
Move nozzle handle (1) to the CLOSED (no flow) position.
(b)
Disconnect
Nozzle (1) from test adapter outlet (2).
(c)
Adjust pump (5) to 5 psig at the nozzle inlet gage (4) and maintain pressure for I minute minimum.
(d)
Slowly increase pump (5) pressure to 90 psig at gage (4) and maintain pressure for I minute
minimum.
(e)
Reduce pump pressure to zero.
(f)
Move nozzle handle (1) to the OPEN (flow) position.
(g)
Adjust pump (5) to 5 psig at the nozzle inlet gage (4) and maintain pressure for I minute minimum.
(h)
Slowly increase pump (5) pressure to 90 psig at gage (4) and maintain pressure for I minute
minimum.
(i) Reduce pump pressure
to zero.
0)
Move nozzle handle (1) to the CLOSED (no flow) position; disconnect
nozzle assembly (9) from
test adapter (3) and install dust caps.
5-40
Change
1
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