Quantcast OIL STEP CALIBRATION - TM-5-2815-232-140510

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ELECTRIC PROTECTIVE SYSTEM
TROUBLESHOOTING
PROCEDURE C
5N1955 ELECTRONIC SPEED SWITCH
1. Verify button. 2. Reset button. 3. "LED" overspeed light. 4. Seal screw plug (overspeed). 5. Seal screw plug
(crank terminate). 6. Seal screw plug (oil step).
column for Oil Step Speed Setting.
Run the
OIL STEP CALIBRATION
engine at this specified rpm.
1.
Remove the lockwire and seal from seal screw
5.
With the engine running, look into the oil step
plugs (4), (5) and (6). Remove seal screw plug
adjustment access hole.  A red "LED" (light
(6) from access hole for the oil step adjustment
emitting diode) light will be on. After an 8 to 10
screw.
second delay, positive (+) voltage will be seen at
terminal ESS-13.
Now turn the oil step
2.
Use a small screwdriver and lightly turn oil step
adjustment potentiometer clockwise until the red
adjustment  potentiometer  20  turns  in  the
light in the oil step access hole goes out. When
direction
opposite
of
"MAX
ARROW"
the light goes out, this indicates that the oil step
(counterclockwise). This will lower the oil step
rpm setting is above the present running rpm of
speed setting to its lowest value.
the  engine.
Slowly  turn  the  adjustment
potentiometer counterclockwise until the light
NOTE: The oil step adjustment screw is made so it can
comes back on. After an 8 to 10 second delay,
not cause damage to the potentiometer, or be removed,
positive (+) voltage will be seen at terminal ESS-
if the adjustment screw is turned too many turns in either
13.
direction.
6.
When the oil step setting is correct, install seal
3.
Use a 6V3030 Multimeter (or a voltmeter of
screw plug (6) into the adjustment access hole
same accuracy) to check for positive (+) voltage
for the oil step function. Tighten plug to a torque
at terminal ESS-13 [negative (-) voltage is at
of 0.20 0.03 Nm (2 .3 lb. in.). If all other
terminal ESS-5].
adjustments are complete (overspeed and crank
4.
Make reference to SPEED SPECIFICATION
terminate), install lockwire and seal.
CHART (Part of PROCEDURE D).
For a
particular engine rating, find the specified rpm in
498


 


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