TM 9-2320-260-34-2
15-46. BONNET FRAME REPAIR (Cont'd)
NOTE
Left and right heater ducts are replaced the same. This procedure
covers the right side heater duct.
6.
Remove two screws (6) from heater duct (7) and support ( 18).
7.
Remove four rivets (16) and two speed nuts (17) from support (18). Discard rivets (16).
8.
Remove three screws (15) and support (18) from front wall (19).
9.
Remove thirty-six rivets (8), heater duct (7), and insulation (9) from bonnet floor (3). Discard
rivets (8) and insulation (9).
10.
Remove sixteen rivets (11), twenty-four rivets (12), thirty-six rivets (14), and inner panels (13)
and (20) from bonnet frame (10) and bonnet floor (3). Discard rivets (11), (12), and (14).
11.
Remove three screws (4) and post (5) from bonnet floor (3).
NOTE
Assistant will help with step 12.
12.
Remove fortv-three rivets (1). thirtv-five rivets (2). and bonnet floor (3) from bonnet frame (10) and
front wall (19). Discard rivets (1) and (2).
b. Assembly
NOTE
Insulate areas of dissimilar metal-to-metal contact with zinc
chromate primer.
Seal area between exterior joints with sealing compound.
Insulate all enclosed structures with fibrous glass felt insulation.
Assistant will help with step 1.
1.
Install bonnet floor (3) on bonnet frame (10) and front wall (19) with forty-three new rivets (1) and
thirty-five new rivets (2).
2. Install post (5) on bonnet floor (3) with three screws (4).
3. Install inner panels (13) and (20) on bonnet frame (10) and bonnet floor (3) with thirty-six new
rivets (14), twenty-four new rivets (12), and sixteen new rivets (11).
NOTE
Left and right heater ducts are replaced the same. This procedure
covers the right side heater duct.
4. Install new insulation (9) and heater duct (7) on bonnet floor (3) with thirty-six new rivets (8).
5. Install support (18) on front wall (19) with three screws (15).
6. Install two speed nuts (17) on support (18) with four new rivets (16).
7. Install heater duct (7) on support (18) with two screws (6).
15-174
