0014
TM 1-4920-924-13&P
AVIATION SHOP EQUIPMENT CONTACT MAINTENANCE (AV SECM) SYSTEM MAINTENANCE
INSTRUCTIONS FOR STRAP FASTENER LOOPS - (CONTINUED)
7.
On top of rear aluminum rail (Figure 8, Item 5) measure from outside edge of corner casting (Figure 8, Item
13) from right towards left 28.71 inches and from front of aluminum rail (Figure 8, Item 5) towards back 0.75
inches and mark measurement (Figure 8, Item 4).
8.
At marked measurement (Figure 8, Item 4) position right side mounting hole (Figure 8, Item 8) of strap
fastener loop (Figure 8, Item 9) center on marked measurement (Figure 8, Item 4).
9.
Center punch right and left side mounting hole (Figure 8, Item 8) of strap fastener loop (Figure 8, Item 9)
onto aluminum rail (Figure 8, Item 5).
10.
On top of rear aluminum rail (Figure 8, Item 5) measure from outside edge of corner casting (Figure 8, Item
13) from right towards left 38.26 inches and from front of aluminum rail (Figure 8, Item 5) towards back 0.75
inches and mark measurement (Figure 8, Item 2).
11.
At marked measurement (Figure 8, Item 2) position right side mounting hole (Figure 8, Item 8) of strap
fastener loop (Figure 8, Item 9) center on marked measurement (Figure 8, Item 2).
12.
Center punch right and left side mounting hole (Figure 8, Item 8) of strap fastener loop (Figure 8, Item 9)
onto aluminum rail (Figure 8, Item 5).
13.
Remove strap fastener loops (Figure 8, Item 9) and drill one 3/16 inch hole at eight center punched marks
(Figure 8, Item 1, 2, 3, 4, 6, 7, 11 and 12).
14.
Install four strap fastener loops (Figure 8, Item 9) to aluminum rail (Figure 8, Item 5) by installing eight
11/64 inch blind rivets (Figure 8, Item 10) into mounting holes (Figure 8, Item 8) of four strap fastener
loops (Figure 8, Item 9).
15.
On forward facing area of front aluminum rail (Figure 8, Item 17) measure from outside edge of corner casting
(Figure 8, Item 14) from right towards left 9.61 inches and from top of aluminum rail (Figure 8, Item 17)
towards bottom 0.75 inches and mark measurement (Figure 8, Item 15).
16.
At marked measurement (Figure 8, Item 15) position right side mounting hole (Figure 8, Item 8) of strap
fastener loop (Figure 8, Item 9) center on marked measurement (Figure 8, Item 15).
17.
Center punch right and left side mounting hole (Figure 8, Item 8) of strap fastener loop (Figure 8, Item 9)
onto aluminum rail (Figure 8, Item 17).
18.
On forward facing area of front aluminum rail (Figure 8, Item 17) measure from outside edge of corner casting
(Figure 8, Item 14) from right towards left 19.16 inches and from top of aluminum rail (Figure 8, Item 17)
towards bottom 0.75 inches and mark measurement (Figure 8, Item 18).
19.
At marked measurement (Figure 8, Item 18) position right side mounting hole (Figure 8, Item 8) of strap
fastener loop (Figure 8, Item 9) center on marked measurement (Figure 8, Item 8).
20.
Center punch right and left side mounting hole (Figure 8, Item 8) of strap fastener loop (Figure 8, Item 9)
onto aluminum rail (Figure 8, Item 17).
21.
On forward facing area of front aluminum rail (Figure 8, Item 17) measure from outside edge of corner casting
(Figure 8, Item 14) from right towards left 28.71 inches and from top of aluminum rail (Figure 8, Item 17)
towards bottom 0.75 inches and mark measurement (Figure 8, Item 20).
22.
At marked measurement (Figure 8, Item 20) position right side mounting hole (Figure 8, Item 8) of strap
fastener loop (Figure 8, Item 9) center on marked measurement (Figure 8, Item 20).
23.
Center punch right and left side mounting hole (Figure 8, Item 8) of strap fastener loop (Figure 8, Item 9)
onto aluminum rail (Figure 8, Item 17).
24.
On forward facing area of front aluminum rail (Figure 8, Item 17) measure from outside edge of corner casting
(Figure 8, Item 14) from right towards left 38.26 inches and from top of aluminum rail (Figure 8, Item 17)
towards bottom 0.75 inches and mark measurement (Figure 8, Item 22).
25.
At marked measurement (Figure 8, Item 22) position right side mounting hole (Figure 8, Item 8) of strap
fastener loop (Figure 8, Item 9) center on marked measurement (Figure 8, Item 22).
26.
Center punch right and left side mounting hole (Figure 8, Item 8) of strap fastener loop (Figure 8, Item 9)
onto aluminum rail (Figure 8, Item 17).
27.
Remove strap fastener loops (Figure 8, Item 9) and drill one 3/16 inch hole at eight center punched marks
(Figure 8, Item 15, 16, 18, 19, 20, 21, 22 and 23).
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