Page 2-4. Subparagraph 2-11a(3) is added after
(2) (d), the following is added.
(3) Break in period: The drill should be oper-
A break in operation of a new or over-
ated in the FORWARD/COUNTERCLOCKWISE
hauled drifter drill is required to seat
position of drilling for a period of 5 minutes to
the rifle bar nut and other internal parts
properly set the adjustment of the RIFLE NUT.
of the drill. Break in the drifter drill by
Page 2-7. Subparagraph 2-11c.1 is added after
operating it in only the forward (counter-
subparagraph 2-11c(2) (f).
clockwise) direction for a minimum
period of 5 minutes.
c1. Installing the shank piece (striker bar).
Page. 3-5. Subparagraph 3-9c is superseded as
(1) Loosen the chuck jaw retainer bolts and
remove the chuck jaw retainer.
(2) Insert the shank end of the striker bar in
c. Fill with rock drill oil. MIL-L2104B. as often
the drill chuck.
(3) Slide the chuck jaw retainer over the end
Page 3-9. In figure 3-7(2), TRACK ROLLER OIL
FITTINGS is changed to read "TRACK ROLLER
of the striker bar and bolt it to the front head
of the drill.
Page A-1. In paragraph A6:
Operation of the drifter drill without the
TB 740-93-2 is changed to read "TB 740-97-2."
striker bar should not be attempted.
TP 740-93-3 is changed to read "TM 740-90-1."
Page 2-9. immediately after subparagraph 2-11d
Page B-1. Appendix B is rescinded.