TM 9-2320-280-20-2
4-124. NBC CONTROL PANEL REPLACEMENT (Cont’d)
W A R N I NG
Use care when installing leads to NBC control panel fuse block.
Ensure lead clips lock into place. Failure to do so may cause
damage to equipment and/or injury to personnel.
1. Install two cushioned wire clamps (17) with wire harness (14) in place onto NBC control panel (12)
with screws (15) and nut and lockwasher assemblies (16).
NOTE
For M997, M997A1 and M997A2 ambulances, perform steps 8
through 14 for installation of leads to NBC fuse block.
For M996 and M996A1 ambulances, perform steps 15 through
19 for installation of leads to NBC fuse block.
Leads 787, 784, and 786 have two way jumpers connecting fuses
for heaters 4 & 5, 6 & 7, and 2 & 3 respectively.
2. Install leads 795 (3), 796 (4) and lead 793 (2), and diode (28) onto NBC control panel relay ground (1)
with nut and lockwasher assembly (29).
NOTE
M996 and M996A1 ambulances have three leads, 785, 786, and
787, secured to NBC control panel relay.
3. Install leads 784 (7), 787 (8), and leads 785 (9), 786 (10) onto NBC control panel relay (24) with
nut (5) and lockwasher (6).
4. Install leads 783A (22) and 783B (23) and remaining lead from diode (28) onto NBC control panel
relay (24) with nut and lockwasher assembly (11).
5. Install leads 782 (25) and 782A (20) onto NBC control panel relay (24) with nut (26) and lockwasher
(27).
6. Install leads 782A (20) and 783 (21) onto NBC control panel circuit breaker (13) with two screws (18)
and lockwashers (19).
7. Install leads 783 (21) and 783A (22) onto NBC control panel ON/OFF toggle switch (35) with two
screws (33) and lockwashers (34).
8. Install leads 787B (30) and 787 (8) into NBC fuse block (40) for heater fuse #4.
9. Install lead 787A (31) into NBC fuse block (40) for heater fuse #5.
10. Install lead 784B (32) into NBC fuse block (40) for heater fuse #6.
11. Install lead 784A (36) and 784 (7) into NBC fuse block (40) for heater fuse #7.
12. Install leads 785 (9) and 785A (39) into NBC fuse block (40) for heater fuse #1.
13. Install leads 786 (10) and 786B (38) into NBC fuse block (40) for heater fuse #2.
14. Install lead 786A (37) into NBC fuse block (40) for heater fuse #3.
4-304
