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 336 of 951
TM 9-2320-280-20-2
4-98
Change 3
4-60. STOPLIGHT SWITCH (11663279) MAINTENANCE
NOTE
Prior to removal, tag leads for installation.
1.
Remove push on nut (10) from rod connecting switch arm (5) and brake pedal arm (9).
Discard push on nut (10).
2.
Remove two nuts (6), washers (1), capscrews (2), washers (1), and stoplight switch (3) from
support (4).
3.
Disconnect leads 75A (7) and 75B (8) from stoplight switch (3).
1.
Install stoplight switch (3) on support (4) with two washers (1), capscrews (2), washers (1),
and nuts (6).
2.
Install switch arm (5) into brake pedal arm (9) with push on nut (10).
3.
Connect leads 75B (8) and 75A (7) to stoplight switch (3).
4.
Adjust stoplight switch (3) (para. 4-60c).
1.
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.
2.
Loosen two capscrews (2) 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 1/8 to 1/4 in. (3 to 6 mm).
4.
Tighten two capscrews (2).
5.
Connect leads 75A (7) and 75B (8) to stoplight switch (3).
6.
Connect battery ground cable (para. 4-73).
7.
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.
c. Adjustment
b. Installation
a. Removal
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
Push on nut (Appendix G, Item 226)
Manual References
TM 9-2320-280-10
TM 9-2320-280-24P
Equipment Condition
Battery ground cable disconnected (para. 4-73).
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