Electric Speedometer
Journal Box Typo - Direct Drive
Figure 35. RPM-MPH calibration curve.
99. Troubleshooting
Trouble
Probable Cause
Remedy
No reading-permanent or intermittent.-
Loose connections and/or poorly soldered
Check external connections and resolder if
joints outside instrument.
necessary.
Poorly soldered joint inside instrument
Remove for repair.
Open resistor or rectifier............................
Replace transformer-resistor box.
Pointer
off
zero
(instrument
Slight shift in springs .................................
Reset to zero by zero-set screw in front of
deenergized). -
case.
Damaged spring........................................
Examine springs. If they are deformed
replace instrument.
Note: The above covers only those defects which can be remedied with simple tools such as a screwdriver and a soldering iron. Complete
repair should not be attempted except by qualified personnel. Always remove both indicator and transformer-resistor box when either Is
defective, so they may be recalibrated together.
Section XII. KEROSENE BURNING HEATERS
amount of char on the edge of the wick gives a perfect
100. Cleaning Wicks and Burners
flame.) Turn the wick down into the wick tubes as far as
Remove burner drum and raise the wick even with
it will go. Remove the screw top by taking hold of the
the top of the tubes. Scrape all carbon crust from the
wire handles and turning a quarter turn to the left (fig.
top of the wick with the edge of the cleaning tool
furnished with the stove. (Do not try to clean the wick
too thoroughly as this unnecessarily wastes it. A certain
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