TM 11-6660-200-14
4-8.
ASSEMBLING CONNECTOR HOUSING TO SUPPORT ASSEMBLY, T-420/GMQ-11 OR T-420B/GMQ-11
TOOLS:
Bit, drill, 13/64-inch
Bit, drill no. 7
Bit, drill, 1/4-inch
Drill, electric
Tap, 1/4 - 20 NC
1. Place shaft (1) of connector housing (2) as far as possible into upper mast section (3) with hole (4) directly
opposite pipe plug (5).
2. Put a mark on shaft (1) through center of hole (4) in upper mast section (3).
NOTE
A 1/4 - 20 NC tap and a no. 7 or 13/64-inch drill bit will be required to perform steps 3, 4, and 5.
If the above items are not available, use a 1/4-inch drill bit and perform steps 6 and 7.
3.
Using either a 13/64-inch or no. 7 drill bit, drill a hole through one side of shaft (1).
4.
Using 1/4 - 20 NC tap, thread hole (6).
5.
Install 1/4-inch screw (7).
6.
Using a 1/4-inch drill bit, drill a hole straight through shaft (1) and out other side of upper mast section (3).
7.
Install one 114-inch by 1 3/4-inch long screw (8), lock washer (9), and nut (10) through shaft (1) and upper mast
section (3).
4-8