TM 10-4320-344-24
2.21 ENGINE ASSEMBLY MAINTENANCE.
2.21.1 Fuel System Bleeding.
This task covers:
2.21.1.1
Bleeding
Fuel
Lines
2.21.1.2 Bleeding Fuel Injection Lines
INITIAL SETUP
Tools
Equipment Conditions
General Mechanic’s Automotive
Tool Kit, Appendix B, Section III,
Item 1
Material/Parts
Pan, Appendix C, Item 19
Rags, Appendix C, Item 20
Personnel
Two personnel are required for the Model
609-A Pumping Assembly.
Pumping station shut down, TM 10-4320-
344-10.
General Safety Instructions
Do not work on equipment that is not
securely stabilized to prevent rolling
o r s l i d i n g.
Diesel fuel is flammable.
Keep sparks,
cigarettes, and open flame away from
fuel system components while working on
engine assembly.
Do not work on equipment without follow-
ing standard safety precautions.
2.21.1.1 Bleeding Fuel Lines.
Diesel fuel is flammable.
Keep sparks, cigarettes, and open flame away from
fuel system components while working on engine.
This procedure applies to Models 609-C and US636HCCD-1. The procedure
for unit 609-A is similar.
For Model 609-A two personnel are required because the fuel transfer
pump assembly is located on opposite side of engine from bleeder valve.
a .
Place pan under pumping assembly.
b .
Set manual stop control in STOP position, reference TM 10-4320-344-10.
Loosen bleed valve by the larger hexagon fitting (19mm) next to banjo fitting.
c .
Open bleed valve at (Figure 2-110, 1) on fuel injection pump (2).
The fuel transfer pump will only work if camshaft of injector pump is in such
position that diaphragm of fuel transfer pump is not lifted. When operating
fuel transfer pump lever, commencement of lifting movement of diaphragm must
occur in the first quarter of its total travel. If not, turn engine over by
slightly tapping start button, but do not crank engine.
d.
Hand pump lever (3) on fuel transfer pump (4) until air bubbles disappear from
f u e l f l o w.
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NOTE
NOTE
NOTE
