TM-9-2320-272-24-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4
JUNE 1998
TM-9-2320-272-24-1 - Page 95 of 1015
TM 9-2320-272-24-1
Table 2-1. Unit Preventive Maintenance Checks and Services (Contd).
ITEM TO
ITEM
INTERVAL
CHECK/
NO.
SERVICE
PROCEDURE
NOT FULLY
MISSION
CAPABLE IF:
11 Semi-
Batteries
WARNING
annual
l
Wear safety glasses or goggles when checking
batteries. Always check electrolyte level with engine
stopped. Do not smoke or use exposed flame when
checking batteries; explosive gases are present, and
severe injury to personnel can result.
l
Remove all jewelry such as rings, dog tags,
bracelets, etc. If jewelry contacts battery terminal, a
direct short may result in instant heating of tools,
damage to equipment, and injury or death to
personnel.
l
Remove or disconnect batteries, and turn master
battery disconnect switch off prior to performing
maintenance in immediate area or working on
electrical system. Such disconnections prevent
electrical shock to personnel and equipment.
l
Ensure seatbelts do not come in contact with
electrolyte. Damage to strapping will result, leading
to injury or death.
[RPL]
l
Ensure seatbelts are not caught inside battery box
when closing cover. Failure to do so will result in
injury or death.
a.
Clean and inspect batteries (para. 3-125). Replace if
required.
b.
Inspect battery box for security of mounting and
completeness of assembly (para. 3-128).
c.
Inspect battery cables and terminals for frays, splits, and
security Repair battery cables or terminals (para. 3-131), or
replace as necessary (para. 3-124).
e.
Inspect slave receptacle and wiring for security of
mounting and damage. Repair (para. 3-131), or replace if
damaged (para. 3-127).
f.
Lightly coat battery terminals and slave receptacle
contacts with grease.
EXPECTED TEMPERATURES
LUBRICANTS
ABOVE 15°F
+40
o
F TO -15°F
+40
o
F TO -65°F
(ABOVE -9
o
C)
(+4
o
C TO -26°C)
(+4
o
C TO -54°C)
GAA
All temperatures
Grease, automotive and
artillery (MIL-G-10924)
g.
Inspect seatbelts for serviceability and security of
mounting. Replace seatbelts if unserviceable or show signs of
contact with electrolyte (para. 3-289).
2-7
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