TM 9-2320-280-20-2
4-100
Change 2
4-61. STOPLIGHT SWITCH (RCSK 17810) MAINTENANCE
a. Removal
NOTE
Prior to removal, tag leads for installation.
1.
Disconnect leads 75A (1), 75B (16), and connector 810A/810B (15) from stoplight switch leads (2).
2.
Remove pushnut (14), stoplight switch arm (13), and washer (12) from actuating rod (10). Discard
pushnut (14).
3.
Remove two locknuts (6), washers (4), capscrews (5), washers (4), and stoplight switch (3) from
mounting bracket (7). Discard locknuts (6).
4.
Remove pushnut (9), actuating rod (10), and washer (11) from brake pedal (8). Discard pushnut (9).
INITIAL SETUP:
Applicable Models
M997A2, M1025A2, M1035A2, M1043A2,
M1045A2, M1097A2, M1123
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
Test Equipment
Multimeter (Appendix B, Item 166)
Materials/Parts
Two pushnuts (Appendix G, Item 170)
Two locknuts (Appendix G, Item 59)
Sealing compound (Appendix C, Item 45)
Equipment Condition
Battery ground cables disconnected (para. 4-73).
1.
Install washer (11) and actuating rod (10) on brake pedal (8) with pushnut (9).
2.
Install washer (12) and stoplight switch arm (13) on actuating rod (10) with pushnut (14).
3.
Install stoplight switch (3) on mounting bracket (7) with two washers (4), capscrews (5), washers (4),
and locknuts (6).
4.
Connect leads 75A (1), 75B (16), and connector 810A/810B (15) to stoplight switch leads (2).
b. Installation
1.
Disconnect leads 75A (1), 75B (16), and connector 810A/810B (15) from stoplight switch leads (2) and
connect multimeter to leads on stoplight switch (3) to check continuity. Multimeter should indicate open.
Depress brake pedal; multimeter should indicate continuity within approximately 1/4 in. (6 mm) of pedal
travel. If not, go to step 2.
2.
Loosen two capscrews (5) to allow movement of stoplight switch (3).
3.
Position stoplight switch (3) so that continuity is present when installed. Slide stoplight switch forward until
no continuity (open) is indicated (approximately 1/4 in. (6 mm)).
4.
Tighten two capscrews (5).
5.
Connect leads 75B (1), 75A (16), and connector 810A/810B (15) to stoplight switch leads (2).
6.
Connect battery ground cables (para. 4-73).
7.
Turn selector lever to service drive; stoplights should not illuminate. Depress brake pedal; stoplights should
illuminate within 1/4 in. (6 mm) of pedal travel.
c. Adjustment
This task covers:
a. Removal
c. Adjustment
b. Installation
