TM 9-2320-260-34-2
15-30. UNDERFRAME REPAIR
THIS TASK COVERS:
b. Assembly
a. Disassembly
INITIAL SETUP
MATERIALS/PARTS (Contd)
APPLICABLE MODES
Two seals (Appendix D, Item 447)
M820, M820A1, M820A2
Sealing compound (Appendix C, Item 45)
TOOLS
REFERENCES (TM)
General mechanic's tool kit
TM 9-2320-260-10
(Appendix B, Item 1)
TM 9-2320 -260-34P-2
Rivet gun (Appendix B, Item 120)
EQUIPMENT CONDITION
MATERIALS/PARTS
Parking brake set (TM 9-2320-260-10).
Eight lockwashers (Appendix D, Item 224)
Thirty-two rivets (M820A1)
Thirty-two rivets (M820, M820A2)
NOTE
Retainers are replaced the basically the same on M820, M820A1,
and M820A2 vehicles. This procedures covers the M820 and
M820A2 vehicles.
Assistant will help with step 1.
1.
Remove one hundred twenty-eight screws (15), two retainers (14), channels (12), and seals (13) from
underframe (1). Discard seals (13).
2.
Remove thirty-two screws (4) and four covers (5) from underframe (1).
3.
Remove eight nuts (3), lockwashers (2), screws (7), and four plates (6) from underframe (1). Discard
lockwashers (2).
4.
Remove thirty-two rivets (8) and eight tiedowns (9) from underframe (1). Discard rivets (8).
5.
Remove four screws (11) and angle bracket (10) from underframe (1).
1. Install angle bracket (10) on underframe (1) with four screws (11).
2. Install eight tiedowns (9) on underframe (1) with thirty-two new rivets (8).
3. Install four plates (6) on underframe (1) with eight screws (7), new lockwashers (2), and nuts (3).
4. Install four covers (5) on underframe (1) with thirty-two screws (4).
NOTE
Apply sealing compound to exterior joints for installation.
Assistant will help with step 5.
5. Install two new seals (13), channels (12), and retainers (14) on underframe (1) with one hundred
twenty-eight screws (15).
15-100
