TM 9-1829A, April 1944
38/100
2021-07-07
Chapter 5: King-Seeley speedometer
23. Description
King-Seeley speedometers employ a horseshoe-type magnet, and the field plate is permanently assembled as part
of the main frame. This make of instrument can thus be readily identified (internally, fig. 44). For complete
description, operation, and test procedure refer to paragraphs 2 and 4.
Figure 44: King-Seeley speedometer, disassembled
24. Disassembly
a.
Remove bezel and case:
Pry bezel loose (with screwdriver) at two points about one inch apart. Use cutting
pliers and tear out this section of bezel (fig. 51). Then pull bezel off (fig. 52) and remove gaskets, glass, and
glass retainer. Remove reset knob screw, reset knob, reset spring and washer. (If knob is tight, hold both reset
shaft and reset knob with small pliers and turn knob off.) (On speedometers with flexible reset shaft, remove
the reset knob, panel nut, and threaded ferrule from the flexible conduit before removing case. The ferrule is
removed by holding the conduit firmly with pliers while unscrewing the ferrule with pliers.) Remove three
case screws, backing plate and gasket, and lift mechanism out of case.
b.
Remove pointer and dial:
Grasp pointer hub with thumb and forefinger and twist in a counterclockwise
direction (against stop) while pulling gently but firmly until it comes off (fig. 78). Remove two dial retaining
screws and lock washers, and lift off dial.