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TM 11-5820-890-30-5
2-48. REPLACEMENT OF THREADED SCREW INSERTS.
Threaded screw inserts are replaced as described in the following procedure. Table 2-3 lists the threaded screw
inserts included in the maintenance group for repair of this equipment. It also identifies where these threaded
screw inserts are used in the equipment. Also see TM 11-5820-890-30P-3.
Table 2-3. Threaded Screw Inserts
EQUIPMENT
LOCATION
SCREW INSERT
TYPE
SIZE
QTY
RT Chassis
where
RT Chassis
where
RT Chassis
where
RT Chassis
where
RT Chassis
where
RT Chassis
where
holding battery cover attaches
MA3330-102
M3 x 1
2
top cover attaches
MA3330-102
M3 x 1 11
bottom cover attaches
MA3330-102
M3 x 1 13
handle assembly attaches
MA3330-152
M3 x 1.5 4
guard assembly attaches
MA3330-152
M3 x 1.5 4
keypad attaches to front panel
MA3330-100
M2.2 x 1 4
Tools:
Threaded screw insert extractor
Thread cleaning tap
Hex wrench
Prewinder
Tang breakoff tool
Brace
References:
Figure 2-19 for illustration of process.
ITEM
ACTION
REMARKS
REMOVAL
a. Threaded screw insert
Place in hole. Tap extractor to seat
For recessed M3 x 1 in-
extractor (1)
in insert. Maintain steady pressure on
serts, use tool 1227-02.
extractor and unscrew insert. Remove
For all others, use tool
insert from hole.
1227-6 or 1227-02, de-
pending on the insert size.
See figure 2-19 for illustra-
tion of tool usage.
b. Thread cleaning tap (2)
Select proper size tap. Insert and secure
in brace (3). Start carefully in hole. Screw
tap to bottom of hole. Unscrew tap.
2-175
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