TM 10-4930-351-14
0109 00
ADJUST FUEL INJECTION PUMP. (Refer to Figure 34.)
This task must be accomplished any time the fuel injection pumps have been removed and replaced.
INITIAL SET-UP:
Tools:
Materials/Parts Required:
Key, Socket Head Screw, 5 mm
Rubber Band
(WP 0113 00, Item 1)
Combination Wrench, 10 mm
Gasket (WP 0117 00, Item 46)
(WP 0113 00, Item 2)
Combination Wrench, 13 mm
(WP 0113 00, Item 2)
Equipment Condition:
Combination Wrench, 17 mm
Engine module installed in pump-engine module.
(WP 0113 00, Item 2)
Valve covers removed
Combination Wrench, 19 mm
(WP 0113 00, Item 2)
Screwdriver, Flat Blade (1/8 x 8 in.)
(WP 0113 00, Item 2)
Injection Advance Control Tool
(WP 0113 00, Item 8)
NOTE
Copper washers are used under the two socket head cap screws at the lower side of the fuel control cover.
Ensure copper washers are reinstalled on the correct socket head cap screws.
1.
Remove five socket head screws (1) and washers (2 and 3) attaching fuel control rod cover (4) to crankcase.
2.
Remove remaining nut (5) and washer (6) from fuel control rod cover (4). Remove cover and gasket (7); discard gasket
if socket head screws (1) and nut (5) were fully tightened. Remove gasket residue from crankcase and cover.
3.
Attach a rubber band to control rod end (8) and any attaching point at the pulley end of the engine to hold control rod
fully right. Set throttle lever (9) to maximum fuel position.
4.
Set cylinder of injection pump (10) being timed to TDC on the compression stroke. Turn flywheel until intake valve (11)
opens. Rotate flywheel to the right until intake valve (11) closes. Continue turning flywheel until timing mark (12) on
flywheel is aligned with indicator (13) on shroud.
5.
Remove fuel feed line (14) from injection pump (10) and fuel injector (15) being timed.
6.
Install injector pump adjustment tool (16) on pump being timed.
7.
Slowly turn flywheel clockwise until column of fuel in tool starts to move.
8.
At this point fuel would be going in the injector nozzle. Check timing mark (12) and indicator (13) on the shroud to see
that they are aligned.
a.
If timing mark on the flywheel is before the indicator on the shroud, injection pump timing is too fast. The
fuel injection pump must be removed and additional gasket(s) must be added between the injection pump
and the crankcase.
b.
If timing mark on the flywheel is after the indicator on the shroud, injection pump timing is to slow. The
fuel injection pump must be removed and gasket(s) must be removed from between the injection pump and
the crankcase.
9.
Repeat steps 4 through 8 until timing is correct.
10. Adjust the other fuel injection pump by repeating steps 4 through 9.
11. Remove rubber band from control rod (8) and engine.
0109 00-47
