TM 9-2320-283-10
Table 2-1. Preventive Maintenance Checks and Services for Model M915A1
Location
Item Interval
No.
Item to
Crewmember
Check/
Procedure
Not Fully Mission
Capable If:
Service
DRIVER
13 Before
A i r
Check automatic drain valve
Automatic drain valve
Dryer
operation. With engine running
inoperative.
and air pressure reaches 120
psi, a sharp burst of air will be
heard at the drain valve each
time the compressor unloads.
NOTE
13.1 Before
Trailer
Perform this check with the
Brakes
trailer empty and the trailer
loaded after the tractor/trailer
are coupled.
a. Check for air leaks at the
Any air leaks are
intervehicular connecting
present.
hoses, relay valve and air res-
ervoirs.
b. Apply trailer brakes only
Brakes fail to hold
and attempted to move the
tractor/trailer combi-
tractor /trailer combination.
nation from moving.
Change 3
2-45
