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Page Title: Table 1. Preventive Maintenance Checks and Services (PMCS) for M878A2. cont'd
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TM 9-2320-312-10
Table 1. Preventive Maintenance Checks and
Services (PMCS) for M878A2 - Continued.
LOCATION
ITEM TO
ITEM
CHECK/
NOT FULLY MISSION
NO.
INTERVAL
SERVICE
PROCEDURE
CAPABLE IF:
RIGHT SIDE
24
After
Air Dryer
a. Check exhaust port of air dryer for
obstructions such as mud or debris.
AIR DRYER
EXHAUST PORT
b. With engine running, pump service
brakes until dual air pressure guage
drops below 100 psi (690 kPa).
c. Allow air pressure to build in air
system until dual air pressure gauge
indicates approximately 125 psi
(862 kPa).
d. At approximately 125 psi, sound of
exhausting moisture from air dryer
exhaust port (purge valve) should be
heard. Green needle on dual air pres-
sur guage will begin to drop, until it
has dropped 10 psi (69 kPa).
e. Notify Unit Maintenance if moisture e. Air dryer moisture ejection (purge
ejection is inoperative.
cycle) does not operate.
0012 00-11

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