TM 20-4320-344-24
3.8.10 Fuel Injection Pump Assembly Test and Adjustment, Model 609-A.
This task covers:
Test and adjustment.
INITIAL SETUP
Tools
Equipment Conditions
General Mechanic’s Automotive
Fuel Injection Pump Assembly removed,
Tool Kit, Appendix B, Section
paragraph 3.8.9.
III, Item 1
General Safety Instructions
Goggles, Industrial, Appendix B,
Section III, Item 2
Do not work on equipment without follow-
ing standard shop safety practices.
Gun, Air Blow, Appendix B, Section
III, Item 2
The bench test procedure is based on the following conditions:
Injection lines are 3/32 inch (2.38 mm) ID by 30 inches (762 mm) long.
Fuel readings are based on fuel with a viscosity of 34-36 SSL at 100° F
(37.78° C).
Fuel temperature is at 110° to 115° F (43.33 to 46.11° C).
Nozzles,
part number 12SD12, are adjusted to opening pressure of 2,500
psi (17,538 kPa).
a .
Install fuel injection pump on test stand.
b .
Using two wrenches, install applicable transfer pump inlet connector.
Make
sure outlet fitting does not get moved at the same time.
c .
Install transfer pump gage connector.
d .
Install a shutoff valve to isolate gage when not in use.
e .
Connect a pressure gage to adapter on gage
Some pumps require one-quarter of one degree
perform step f.
Otherwise, perform step g.
f .
g .
h.
i .
j .
k.
l .
3-62
connector.
setting accuracy.
I f s o ,
Remove timing line cover and install advance gage.
Remove timing line cover and install advance window.
Determine proper direction of pump rotation.
Rotation is determined as viewed
from drive end of pump.
If pump is equipped with an “ENERGIZED-TO-RUN” electric shutoff device,
energize it at lowest speed with specified voltage.
Move pump throttle lever to full load position.
When transfer pump is primed, allow fuel to bleed for several seconds from
loosened injection line nuts at nozzles.
Securely tighten line n u t s.
NOTE
NOTE
