TM 9-2320-260-34-1
5-10. PATTERN TEST (Contd)
NOTE
Perform step 3 for non-top stop injector.
3.
Remove plunger (4) and spring (5) from injector (3).
NOTE
Perform steps 4 and 5 for top stop injector.
4.
Using adjusting wrench and locknut wrench, remove locknut (6), adjusting screw (7), plunger (4),
spring retainer (8), and plunger spring (5) from injector (3).
5.
Remove retainer ring (1) and screen (2) from injector (3). Discard retaining ring (1) and screen (2).
6.
Place injector (3) in burnishing tool adapter (10).
Install plug (9) in adapter (10) drain opening.
7.
Place injector (3) in spray pattern tester (13).
8.
Install injector (3) to holddown bracket (14) with knob (12).
9.
NOTE
Use target ring marked "8" .007 x 17.
10.
Place target ring (15) on spray pattern tester (13).
b. Spray Pattern Test
WARNING
Keep hands away from spray stream when fuel is forced from
injector spray holes. Failure to do so may result in injury to
personnel.
Apply 22 psi (152 kPa) pressure on test stand (11).
1.
NOTE
Each spray stream from injector must hit a window in target ring.
If spray stream is off 2, replace injector cup.
2.
Turn target ring (15) so one spray stream from injector (3) hits number one window.
3.
Loosen knob (12) on holddown bracket (14).
4.
Remove injector (3) from spray pattern tester (13).
5,
Remove plug (9) from adapter (10).
6.
Remove injector (3) from adapter (10).
NOTE
Perform step 7 for non-top stop injector.
Insert spring (5) and plunger (4) in injector (3).
7.
NOTE
Perform steps 8 and 9 for top stop injector.
Insert plunger spring (5), spring retainer (8), and plunger (4) on injector (3).
8.
Using locknut wrench and adjusting wrench, install adjusting screw (7) and locknut (6) on
9.
injector (3).
Install new screen (2) on injector (3) with new retainer ring (1).
10.
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