12-120 12-73. TM 9-2320-361-20 This task covers: a. Removal b. Installation INITIAL SETUP: APPLICABLE MODELS REFERENCES (TM) M185A3, M109A3 TM 9-2320-361-20P NOTE All brackets are removed and installed the same. This procedure covers two brackets. 1. Remove two screws (6) and bracket (1) from van roof (2). 2. Remove two screws (4) and bracket (5) from van wall (3). 1. Install bracket (5) on van wall (3) with two screws (4). 2. Install bracket (1) on van roof (2) with two screws (6).