TM-9-2320-280-20-2
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 2 OF 3
JANUARY 1996
TM-9-2320-280-20-2 - Page 338 of 951
TM 9-2320-280-20-2
4-100
Change 3
4-61. STOPLIGHT SWITCH (RCSK 17810) MAINTENANCE
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 push on nuts (Appendix G, Item 226)
Two assembled locknuts (Appendix G, Item 130)
Sealing compound (Appendix C, Item 45)
Equipment Condition
Battery ground cables disconnected (para. 4-73).
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 push on nut (14), stoplight switch arm (13), and washer (12) from actuating rod (10). Discard
push on nut (14).
3.
Remove two assembled locknuts (6), washers (4), capscrews (5), washers (4), and stoplight switch (3)
from mounting bracket (7). Discard assembled locknuts (6).
4.
Remove push on nut (9), actuating rod (10), and washer (11) from brake pedal (8). Discard push on
nut (9).
1.
Install washer (11) and actuating rod (10) on brake pedal (8) with push on nut (9).
2.
Install washer (12) and stoplight switch arm (13) on actuating rod (10) with push on nut (14).
3.
Install stoplight switch (3) on mounting bracket (7) with two washers (4), capscrews (5),
washers (4), and assembled locknuts (6).
4.
Connect leads 75A (1), 75B (16), and connector 810A/810B (15) to stoplight switch leads (2).
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
b. Installation
a. Removal
This task covers:
a. Removal
c. Adjustment
b. Installation
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