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TM 10-4320-343-14
b .
Attach compression gauge (5) as follows:
(1) Remove gauge adapter (6) from gauge (7).
(2) Install new injection nozzle washer (4) with metal surface down.
(3) Install gauge adapter (6) and injection nozzle yoke (2).
( 4 ) I n s t a l l n u t ( 1 ).
(5) Attach gauge (7) to compression gauge adapter (6). Ensure all connections
a r e t i g h t.
c .
Record compression reading as follows:
(1) Pull EMERGENCY STOP SWITCH out.
(2) Push oil pressure bypass switch and start switch simultaneously for
approximately three seconds.
(3) Observe compression gauge installed in step d and record compression
reading.
(4) Release start switch, oil pressure bypass switch and place run switch OFF.
d.
Remove compression gauge (5) as follows:
(1) Remove gauge (7) from gauge adapter (6).
(2) Remove nut (1) and injection nozzle yoke (2).
(3) Remove gauge adapter (6).
(4) Using puller, remove injection nozzle washer (4) and discard.
(5) Attach gauge adapter (6) to to gauge (7).
e .
Install injection nozzle as follows:
(1) Install new injection nozzle washer (4) with metal side down.
( 2 ) I n s t a l l i n j e c t i o n n o z z l e ( 3 ).
(3) Install injection nozzle yoke (2) and nut (1).
f .
Perform steps a through e on remaining cylinders.
g.
Compare compression readings for all cylinders.
Pressure reading differential
must not exceed 58 psi (4 bars) within the allowable 284 psi (20 bars) and 397
psi (28 bars) compression range.
5-13
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