TM 5-4310-386-14
5-30. Fuel Injection Pump (Cont).
(9)
Turn back crankshaft through about one revolution of gage pointer (4), then again in original direction up to
0.1 mm (10 graduations) from O-position on gage. Read crankshaft position from magnetic scale on pulley
and record. This is the fuel break point.
(10)
Turn crankshaft in running direction (clockwise) beyond "O" through about one revolution of the gage and
turn backup to 0.1 mm (10 graduations) before "O" on gage. This is the combustion point.
(11)
Read crankshaft position from magnetic scale (6) on pulley and record. The middle of the two crankshaft
positions is the TDC(=OT) mark.
(12)
Turn crankshaft so that the TDC(=OT) mark found lines up with the pointer (4).
(13)
Remove setting device and dial gage.
(14)
Install rocker cover (para. 4-52).
(15)
Turn the crankshaft backwards through 90 degrees, then in the direction of engine rotation until the pointer
(4) lines up with the fuel break point as recorded in 9 above.
(16)
Remove fuel filter (para. 4-33).
(17)
Remove injector line to cylinder 1 (para. 4-34).
(18)
Connect the high pressure line of the high pressure tester to the threaded sleeve for the fuel filter.
(19)
Connect the overflow pipe with funnel and return line to the stub on the injector pump where the injector line
was disconnected.
(20)
Turn the crankshaft in the direction opposite that of the engine rotation through 90 degrees from the fuel
break point.
(21)
Turn on the high pressure pump.
(22)
Turn crankshaft very slowly in normal direction, until only droplets come out of the overflow pipe into the
funnel at intervals of 5 to 8 seconds.
(23)
Check the pointer (4) and magnetic scale (6) on the crankshaft pulley (7). The reading should be the fuel
break point as previously recorded.
(24)
If fuel delivery is correct, no further action is required. If fuel delivery is not correct, proceed to next step.
(25)
Turn off high pressure tester.
(26)
Turn crankshaft in direction opposite that of engine rotation through 90 degrees from the fuel break setting
and then in direction of engine rotation until fuel break setting is reached.
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