ME 6115-545-34/14-19 C7
Pressure adjust screw
Nozzle Holder Assembly
with a cleaning wire and pin vise.
h. Visually inspect the condition of the valve (4),
preferably with aid of a magnifying glass. The lapped
surface (large outer diameter) of the valve must be
smooth and free of signs of scoring. Also, the valve
must not show any wear or damage at seat location.
If the valve is damaged in any way, the nozzle assem-
bly (1) must be replaced.
i. Thoroughly rinse the valve (4) and valve body (3)
in clean diesel fuel. The valve must fit freely in the
To check this fit, lift valve about one
third of its length out of the body. The valve should
slide down to its seat without aid when assembly is
held at a 45° angle.
j. If the fit of the valve in the valve body is un-
satisfactory, the valve may be cleaned and polished
with lapping compound and castor oil used on tissue
paper. The valve may be held by its stem in a re-
volving chuck for this cleaning operation. An
orange stick or round toothpick will be helpful in
cleaning the valve.
Hard or sharp tools, emery cloth,
crocus cloth, jewelers rouge, grind-
ing compounds, or other abrasives
should never be used in cleaning.
14-28 Change 7