TB-9-2350-277-40-P-2
CARRIER, PERSONNEL, FULL TRACKED, ARMORED M113A3
TECHNICAL BULLETIN; INSTALLATION OF CREW II MODIFICATION KIT PART 2 OF 4
JUNE 2009
TB-9-2350-277-40-P-2 - Page 33 of 100
TB 9-2350-277-40&P-2
MODIFICATION PROCEDURES – Continued
0005 00
0005 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 rear corner.
Measure 12-21/32
inches from the rear edge of hull (1).
Measure 2-1/2 inches from the right hull edge (5).
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 (3) 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 (2) using a 3-1/2 inch saw drill bit and magnetic drilling machine.
6.
Tap four holes (3) using a 3/8 x 16 tap.
Tap to a minimum of 1 inch depth.
Figure 2.
Location for CREW II GPS Antenna Riser
7.
Paint drilled area to prevent corrosion.
Reference TM 43-0139.
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