TM 9-2320-260-34-1
5-9. INJECTOR LEAKAGE TEST (Contd)
8. Position injector (2) on support plate (4).
9. Install support plate (4) on leakage tester (1).
10. Place feeler gage (10) between knob (8) and locknut (9). Adjust locknut (9) until it contacts feeler
gage (10).
11. Install transfer line (12) on injector adapter drain port (3).
NOTE
Ensure injector plunger retracts when retraction lever is shifted
from position "A" to position "B."
12. Tighten T-handle clamp (6) and shift retraction lever (7) from position "A" to position "B."
13. Rotate plunger (5) clockwise slowly while reading air flow meter (14).
NOTE
Air flow meter should not exceed 4.5 units. If reading is over 4.5
units, injector must be overhauled.
14. Rotate plunger (5) and pressure regulator (11) clockwise until highest reading is obtained on air
flow meter (14).
15. Shift retraction lever (7) from position "B to position "A" and loosen T-handle clamp (6). This will
apply 200 lb (91 kg) load to plunger (5).
NOTE
Once a bubble appears, observe time taken for next bubble to
appear. There should be no more than one bubble every five
seconds. If bubbles appear faster than five seconds, injector must
be overhauled.
16. Observe checker (13) for any air bubbles. No air bubbles should appear during first ten seconds
of test.
17. Remove transfer line (12) from injector adapter drainport (3).
18. Rotate pressure regulator (11) slowly to release air pressure.
19. Remove adapter (3) from leakage tester (1).
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