TB-9-2350-277-40-P-3
CARRIER, MECHANIZED SMOKE OBSCURANT M58
TECHNICAL BULLETIN; INSTALLATION OF CREW II MODIFICATION KIT PART 3 OF 4
JUNE 2009
TB-9-2350-277-40-P-3 - Page 31 of 88
TB 9-2350-277-40&P-3
MODIFICATION PROCEDURES – Continued
0004 00
0004 00-3
NOTE
The 3-9/16 inch hole in the magnetic drill base plate/template must
align with 3-1/2 inch hole previously marked on hull roof.
Minor
adjustments to position magnetic drill base plate/template may be
necessary.
2.
Position magnetic drill base plate/template (4) on hull roof right side in front of turbine housing.
Measure 4-1/4 inches from the front edge of turbine housing (2).
Measure 2-1/4 inches from the
right hull edge (1).
NOTE
The magnetic drill base plate/template is 1 inch thick.
Marking the
drill for a maximum depth of 2-1/4 inches will prevent any break thru.
3.
Drill four holes (5) using a 5/16 inch drill to a maximum depth of 1-1/4 inches.
DO NOT BREAK
THRU.
4.
Drill a pilot hole (6) using a 1/4 inch drill bit and magnetic drilling machine.
5.
Drill center hole (3) using a 3-1/2 inch saw drill bit and magnetic drilling machine.
6.
Tap four holes (5) using a 3/8 x 16 tap.
Tap holes to a minimum of 1 inch depth.
Figure 2.
Location for GPS Sensor/Mounting Bracket and SINCGARS Antenna
7.
Paint drilled area to prevent corrosion.
Reference TM 43-0139.
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