TM 9-2320-240-20
12-40. INTERIOR AND EXTERIOR TELEPHONE JACKS REPLACEMENT
THIS TASK COVERS:
a. Inside Jack Post Removal
c. Outside Jack Post Installation
b. Outside Jack Post Removal
d. Inside Jack Post Installation
INITIAL SETUP
APPLICABLE MODELS
EQUIPMENT CONDITION
M820, M820A1, M820A2
Parking brake set (TM 9-2320-260-10).
REFERENCES (TM)
TM 9-2320-260-10
TM 9-2320-260-20P
NOTE
Tag all wires for installation.
a. Inside Jack Post Removal
1. Remove four screws (4) and junction box (6) from panel wall (10).
2. Remove two screws (14), four wires (15), and two nuts (1) from jack posts (5).
3. Remove two jack posts (5) and grommets (16) from junction box (6).
b. Outside Jack Post Removal
1. Remove thirteen screws (2) and retainer (3) from panel wall (10).
2. Remove two screws (7), wires (8), and nuts (9) from jack posts (13).
NOTE
Assistant will help with step 3.
3. Remove two jack posts (13) and grommets (12) from junction box (11).
c. Outside Jack Post Installation
NOTE
Assistant will help with step 1.
1. Install two grommets (12) and jack posts (13) injunction box (11) with two nuts (9), wires (8), and
screws (7).
2. Install retainer (3) on panel wall (10) with thirteen screws (2).
d. Inside Jack Post Installation
1. Install two grommets (16) and jack posts (5) in junction box (6) with two nuts (1), four wires (15),
and two screws (14).
2. Install junction box (6) on panel wall (10) with four screws (4).
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