|
| |
TM 10-4320-324-14
a. Testing.
WARNING
Fuel is under high pressure during this test. Pressure is sufficient to penetrate skin and cause severe
injury to personnel.
(1)
Rotate and secure injection input lever (1) clockwise (towards dipstick), to full run position.
CAUTION
Do not bend injection lines more than 5° from original shape or lines may break.
(2)
Loosen three injection lines (2).
NOTE
The following steps apply to each of the three elements.
(3)
Disconnect an injection line (2) from element to be tested.
(4)
Refer to paragraph 4-45 and evacuate air from injection pump.
(5)
Connect injection pump test gauge (3) to the element to be tested.
(6)
Open bleeder valve (10) on back of test gauge (3).
(7)
Remove two hex socket screws (4), two retaining rings (5), cover (6), and gasket (7).
(8)
Manually rotate crankshaft (8) clockwise until injection pump element to be tested is at the bottom of its
stroke.
NOTE
The lever bar should apply pressure under head of element adjustment screw. Use care in inserting lever
bar in order not to dislodge plunger spring keeper.
(9)
Insert lever bar (9) under injection pump plunger element adjustment screw head, and carefully apply downward
pressure on lever bar to evacuate air from gauge. When escaping fuel is free of bubbles, close bleeder valve
(10) on test gauge (3).
(10)
While holding shut off solenoid up in open position, pump lever bar (9) until test gauge reads 2175 psi (150 bar).
Observe reading for 60 seconds. Replace pump if measured pressure is below 145 psi (10 bar).
(11)
While holding shut off solenoid up in open position, pump lever bar (9, approximately five strokes) until test
gauge reads 5075 psi (350 bar). Replace pump if 5075 psi cannot be obtained.
(12)
Repeat the above steps (4) through (12) for the other two elements.
(13)
Install gasket (7) and injection cover (6) with two retaining rings (5) and screws (4).
5-27
|
