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Onan MDJE Service Manual

Onan MDJE
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I
Sensitiwity
Adjustment
(Begin
Spec
R):
Adjust sensi-
tivity (no-load to full-load speed drop) by turning the
sensitivity adjusting ratchet nut.
If
speed drops
too
much when a full load is applied, turn the ratchet nut
counterclockwise. An oversensitive adjustment, ap-
proaching no speed drop when load is applied, may
result
in
hunting condition (alternate increase and
decrease
in
speed).
MDJA
Governor
System
Adjust engine speed
by
turning governor speed
adjusting nut (Figure
73
prior to
SPEC
R
and Figure
74
SPEC
R).
Turn nut clockwise to increase speed,
counterclockwise to decrease speed.
Adjust sensitivty (no-load to full-load speed drop) by
turning the sensitivity adjusting ratchet nut. If speed
drops too much when full load is applied, turn the
justment, approaching no speed drop when load is
applied, may result in a hunting condition (alternate
increase and decrease in speed). Adjust for maxi-
mum sensitivity without hunting. The use of a reed-
type frequency meter will give the most accurate
results. On generator sets, it should be possible to
adjust for a sensitivity of less than
3
hertz;
2
hertz is
usually attainable.
ratchet nut counterclockwise. An oversensitive ad-
FIGURE
74.
MDJA
(BEGIN
SPEC
R)
GOVERNOR ADJUSTMENTS
PUMP
(HUL
D
SP
RI
NG
STUD
GOVERNOR SPRING
*-TURN
FOR
MINIMUM
.SPEED
DROETHEN
ADJUST NUT
ADJUSTMENT STUD
n1
\L/
TURN TO INCREASE R.P.M.
of
hole
in
governor
shaft.
A9
AND NUT
3-
FIGURE
73.
MDJA GOVERNOR
ASSEMBLY
(PRIOR
TO
SPEC
R)
.
61
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Onan MDJE Specifications

General IconGeneral
BrandOnan
ModelMDJE
CategoryEngine
LanguageEnglish

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