TM 9-2320-280-20-2
4-60. STOPLIGHT SWITCH (11663279) MAINTENANCE
This task covers:
a. Removal
c. Adjustment
b. Installation
INITIAL SETUP:
Applicable Models
All vehicles except M997A2, M1025A2,
M1035A2, M1043A2, M1045A2, M1097A2
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
Test Equipment
Multimeter (Appendix B, Item 166)
Materials/Parts
Pushnut (Appendix G, Item 170)
Manual References
TM 9-2320-280-10
TM 9-2320-280-24P
Equipment Condition
Battery ground cable disconnected (para. 4-73).
NOTE
Prior to removal, tag leads for installation.
a. Removal
1. Remove pushnut (10) from rod connecting switch arm (5) and brake pedal arm (9). Discard pushnut (10).
2. Remove two nuts (6), washera (1), capscrews (2), washers (1), and stoplight switch (3) from support (4).
3. Disconnect leads 75A (7) and 75B (8) from stoplight switch (3).
b. Installation
1. Install stoplight switch (3) on support (4) with two washers (1), capscrews (2), washera (1), and nuts (6).
2. Install switch arm (5) into brake pedal arm (9) with pushnut (10).
3. Connect leads 75B (8) and 75A (7) to stoplight switch (3).
4. Adjust stoplight switch (3) (para. 4-60c).
c. Adjustment
1.
2.
3.
4.
5.
6.
7.
4-98
Disconnect leads 75A(7) and 75B (8) from stoplight switch (3) 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 1/2 in. (12 mm) of pedal travel. If not, go to step 2.
Loosen two capscrews (2) to allow movement of stoplight switch (3).
Position stoplight switch (3) so that continuity is present when installed. Slide stoplight switch forward
until no continuity (open) is indicated (approximately 1/8 to 1/4 in. (3 to 6 mm).
Tighten two capscrews (2).
Connect leads 75A (7) and 75B (8) to stoplight switch (3).
Connect battery ground cable (para. 4-73).
Turn selector lever to service drive; stoplights should not illuminate. Depress brake pedal; stoplights
should illuminate within 1/2 in. (12 mm) of pedal travel.
