TM 9-2320-272-24-1
Table 2-1. Unit Preventive Maintenance Checks and Services (Contd).
ITEM TO
CHECK/
ITEM INTERVAL
NOT FULLY
PROCEDURE
SERVICE
NO.
CAPABLE IF:
17
Semi-
Emergency
a. Inspect front emergency and service air and dummy
annual
and service
couplings for serviceability and seals.
compressed
air systems
NOTE
Inspection of emergency and service air lines and
fittings will be accomplished over complete vehicle.
Tighten, repair, and/or replace components of these
compressed air systems as required. If maintenance is
required at a higher level, records should reflect closest
point of reference to ensure proper identification of
components requiring service.
b. Inspect air lines, fittings, and emergency shutoff valve
for security of mounting, tightness of connections, and
damage that could cause air leaks (para. 2-15).
c. Ensure front emergency shutoff valve is closed and
emergency and service air and dummy couplings are securely
fastened (TM 9-2320-272-10).
NOTE
Inspection of crossmembers, bolts, and rivets will be
accomplished over complete vehicle. Tighten, repair,
and/or replace components of the frame as required.
If maintenance is required at a higher level, records
should reflect closest point of reference to ensure
proper identification of components requiring service.
Frame and Inspect crossmembers for missing rivets, screws,
Screws or rivets are
18
Semi-
annual
cross-
obstructions to other components, and breaks
loose or missing.
members
(TM 9-2320-247-40).
1. Using a 0.001 in. feeler gauge, check for space
between rivet head and the riveted frame members.
Penetration of the feeler gauge between the rivet head
and riveted member is reason to suspect the riveted
connection and/or rivet should be replaced.
2. Thoroughly clean, grease, and oil rivet. Using an oil
can, apply lubricating oil around the connection. Allow
approximately 10-20 seconds for oil to penetrate. Wipe
rivet and riveted connection free of oil. Tap rivet with an
8-pound hammer. Any indication of oil around the
rivet indicates a loose rivet. Replace all loose rivets
(TM 9-2320-247-40). Check all riveted connections for
signs of movement, such as bare or shiny spots or other
indications of movement between rivet and frame. If
movement is indicated, rivet and connection are loose.
2-15
