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TB-9-2350-277-40&P-4 M121 M1064A3 Crew Modification Kit Volume 4 Download

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TB 9-2350-277-40&P-4 MODIFICATION PROCEDURES – Continued 0004 00 0004 00-7 DRILL CREW II HULL ROOF RCU AND GPS CABLE CLAMP NOTE To protect hull integrity, do not break thru hull when drilling. Marking the drill for a maximum depth of 5/8 inch will prevent any break thru. 1. Locate and mark for hole (13), measuring from right inside hull edge (12) and from front hull edge (14) above engine bulkhead. 2. Drill a hole (13) using a 3/16 inch drill bit to a maximum depth of 5/8 inch. DO NOT BREAK THRU. 3. Tap hole (13) using a 10-24 tap. Tap hole to a minimum depth of 1/2 inch. Figure 6. Location for CREW II Hull Roof RCU and GPS Cable Clamp 4. Paint drilled area to prevent corrosion. Reference TM 43-0139.