TM 9-1829A, April 1944
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2021-07-07
h.
Remove magnet (including first gear):
The second gear must be removed before the magnet can be
removed. The method of removing the magnet from the frame depends upon whether the magnet is held in
place with a brass collar, or with a bevel gear on the end of the magnet shaft. The bevel gear is used only on
units having the elbow joint (fig. 79).
(1)
Removing magnet retained by brass collar:
Assemble body of magnet disassembly wrench (T-
170654) to threaded neck of frame, backing off handle so that wrench body will tighten down snugly to
frame. Then turn wrench handle clockwise (fig. 86) until collar is pressed off the magnet shaft.
Figure 86: Removing magnet shaft collar, using dismantling wrench (T-170654)
Push magnet back to original position and remove collar and flat steel washer. Using fixture with adapter
(T-170666 with Det 7) (fig. 87), tighten down handle to smooth out flare in magnet shaft.
Caution: Care
must be taken when using fixture to make sure that it does not come in contact with steel portion of
magnet, causing it to be weakened.
Figure 87: Smoothing out flare in magnet shaft, using fixture (T-170666 with Det. 7)
After smoothing out flare, use safety-edge file (T-170757) to remove any remaining burs from end of
magnet shaft (fig. 62) to prevent scoring bearing surface in frame, then slip magnet and shaft out of
frame.