TM 5-3810-288-12
2) Refer to figure 3-59 and remove and replace
faulty battery, cable, or battery box.
k.
Wiring Harness.
(1) Wiring must be regularly inspected for frayed
insulation, broken wires, corroded terminals, loose
terminals and ground connections and broken or missing
cable clamps. Check electrical connections on the
instrument panel for tightness.
(2) Repair a damaged or broken wire by cutting
length of wire and taping it along the harness. Install two
clips at either end and re- move the broken wire. Secure
the end of the new wire to the end of the old wire and
insulate with electrical tape.
Table 3-4. Battery Condition (Corrected to 80' F.)
Specific gravity
Battery condition
1.280
Fully charged.
1.250
75% charged.
Figure 3-52. Starting motor and solenoids, removal and
1.220
50% charged.
replacement. (Sheet 3 of 3)
The polarities shown on the diagram must be ob-
1.190
25% charged.
served. When this is done, the relay will be ener- gized,
and an audible "click" can be heard when the relay
1.160
Almost discharged.
contacts close. If the contacts dose, the relay is to be
considered in good condition.
1.130
Discharged.
(3) Replacement. Disconnect the three can-
non plug type electrical connections to the reverse
Table 3-5. Electrolyte Freezing Points
polarity relay, and remove the two mounting capscrews
and lockwashers (fig. 3-58).
Specific gravity
Temperature F.
j.
Batteries.
1.280
-90
(1) Test. Test the batteries with a hydro-
1.250
-62
meter.
If the specific gravity reads below 1.225,
recharge the batteries. Test the batteries with the
1.200
-16
hydrometer after recharging. A fully charged battery
should read between 1.280 and 1.300. Re- place a
1.160
+5
battery that will not take or hold a charge. The specific
gravity difference between cells must be within 0.025.
1.100
+19
Remove battery filler caps and add water to 3/8 inch
above plates before re- charging. Refer to tables 3-4
and 3-5.
I. Horn Switch and Wiring. Refer to figure 3-
3-62
