TM 9-2320-273-20
ENGINE RETARDER BRAKE.
4-29. ENGINE RETARDER BRAKE MAINTENANCE (Continued).
LOCATION/lTEM
ACTION
REMARKS
INSPECTION.
1. Engine.
Start up (see TM 9-2320-273-
10) (1st mechanic).
2. Six engine retarder armatures
Bleed brakes by pressing each
(1).
engine retarder armature five
or six times in a row. (2nd
mechanic).
3. Cab/Engine Retarder
a. Keep engine retarder pedal
Switch (3).
(2) pressed down to actu-
ate engine retarder switch
(3).
b. Start with dash selector
Refer to TM 9-2320-273-10.
switch at LOW.
c. Move to MED.
d. Move to HIGH. (1st
mechanic).
4. Engine retarder armatures (1).
Observe that:
If brake does not work
a. When dash selector switch
properly, refer problem to
is at LOW center arma-
Direct Support Maintenance.
ture remains down.
b. When dash selector switch
is moved to MED, center
armature comes up, arma-
ture on ends go down.
c. When dash selector switch
is on HIGH, all armatures
go down.
NOTE
Follow-on maintenance action required:
a. Install rocker arm housing covers, and
crossover tube, para 4-28D and E.
4-98
