POWER TRAIN MLC80A-1/MLC90A-1/MLC100A-1/MLC100-1 SERVICE/MAINTENANCE MANUAL
7-2
Published 10-09-2020, Control # 259-06
Loose Hold-Downs
Loose hold-downs allow the battery to vibrate in the battery
box. This can cause cracks or wear in the container and
cause the acid to leak. Leaking acid corrodes terminals and
cables, causing high resistance at the battery connections,
which weakens the battery. Hold-downs can also distort or
crack the container.
Overloads
Avoid prolonged cranking or the addition of extra electric
devices. These can drain the battery and may cause
excessive heat.
Multiple Battery System
The crane’s 24 V system is powered by two 12 V batteries
connected in series (see Figure 7-1
).
Connect the battery cables as indicated. Be careful not to
reverse the battery connections. Installing the batteries with
electrical connections that are reversed will damage not only
the batteries but also the crane’s electrical system, voltage
regulator, and/or alternator.
Checking Battery State of Charge
Special equipment is required to properly determine the
condition of a battery that has been in service. However, a
voltmeter can be used to determine a battery’s state of
charge by checking the voltage between the battery
terminals (see Figure 7-2
).
FIGURE 7-1
Item Description
1 Cover Mounting Cap Screws, Nuts, and Washers (4 places)
2Cover
3 Hold-Down Plates with Cap Screws and Washers (Qty 4)
4Battery Box
5 Battery: 12V, 1,375 CCA, Size 8D (Qty 2)
6A Retaining Bar (Qty 4, past)
6B Tab (Qty 4, current)
7 To Remote Terminal at Engine
8 To Battery Disconnect Switch
+
-
+
-
WARNING
Personal Injury Hazard!
Each battery weighs about 59 kg (130 lb). Use proper
lifting procedures.
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