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TM 5-4210-220-12
4-24. ELECTRICAL SYSTEM - Continued
(6)
The battery voltage should be as follows.
Ambient
70 F
60 F
50 F
40 F
30 F
20 F
10 F
0
Temp
21 C
16C
10C
4C
-1 C
-7 C
-12C
-18 C
Battery
9.6
9.5
9.4
9.3
9.1
8.9
8.7
8.5
Voltage
(7)
If battery falls the load test, it should be replaced.
REPLACEMENT
NOTE
The procedure for disconnecting the truck batteries is outlined
in steps 1 thru 7. This procedure must be used whenever the
batteries
are
required
to
be
disconnected
for
truck
maintenance.
(1)
Set battery switch in cab to OFF
(2)
Open
battery
compartment;
battery
compartment is located on left hand side of
truck to the rear of the drivers door.
(3)
Hold back latch on right hand side of battery
rack and pull rack forward
(4)
Remove all positive leads from the positive
terminals of the batteries
(5)
Remove all negative leads from the negative
terminals of the batteries.
(6)
If batteries are not being replaced, just
disconnected, lift up all leads and slide a
suitable piece of plywood, hard board, or plastic
sheet between the top of the batteries and the
leads. If necessary the rack can be pushed in
and the compartment door closed
(7)
Tie a label to the door handle to explain why the
batteries are disconnected and who is working
on the truck.
Change 6 4-457
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