POWER TRAIN
MLC150-1 SERVICE/MAINTENANCE MANUAL
7-4
Published 03-21-2021, Control # 264-01
Table 7-2. Open Circuit Voltage
Consult the manual provided with the test meter for detailed
test information.
Troubleshooting—Slow Cranking
If the starter cranks too slowly and the battery is charged and
in good condition, do a voltage-drop test to make sure that
the starter connections are good.
When cranking, a voltage drop of more than 0.6 volts
between the starting motor cable and ground can cause hard
starting regardless of a battery’s condition. The voltage drop
can be caused by a poor contact between the cable terminal
and ground or between the clamp terminal and the battery
post. Also, poor start-switch contacts and frayed, broken, or
corroded cables can be the cause.
Charging
NOTE:
If the crane is equipped with the optional charger,
see
.
1.
Remove the battery or disconnect all of the crane wiring
from the battery.
2.
Read and follow the charger manufacturer’s
instructions.
NOTE:
The battery should be at room temperature when
recharging. Never attempt to recharge a frozen
battery.
3.
Clean the top of the battery to help prevent dirt from
entering the cells.
4.
Remove the vent caps and verify the plates are covered
with electrolyte. If the level is low, add distilled water to
bring the level just to the top of the plates. Use a clean
funnel. Re-check the electrolyte level after charging.
•
The maximum charge rate in amperes should be no
more than 1/3 of the battery’s reserve capacity
minute rating.
NOTE:
The Deka 908D battery originally supplied with the
crane has a reserve capacity rating of 430 minutes
.
•
Do not exceed 13.8 volts for long periods and 14.4
volts for short periods (8 hours maximum).
•
Charge until a 2-hour period results in no increase in
voltage or decrease in current.
NOTE:
Overcharging shortens a battery’s life.
If the battery becomes hot to the touch or if it gases
violently, temporarily halt charging or reduce the
charging current.
Storage
When the crane is left idle for prolonged periods, the
batteries should be periodically charged.
When storing batteries, make sure they are fully charged to
prevent sulfation and the possibility of freezing.
Follow your battery dealer’s recommendations.
BATTERY MAINTENANCE
Quarterly or Every 500 Hours of Engine Operation
(whichever occurs first)
•
Thoroughly clean the batteries with a baking soda/water
solution.
•
Clean the posts and terminals. The posts can be lightly
coated with petroleum jelly to prevent corrosion.
•
Check the electrolyte levels. If required, add additional
electrolyte to bring all levels to the bottom of the vent
wells. DO NOT OVERFILL. If the batteries require
topping off while in service, add distilled water — DO
NOT ADD
ACID.
•
Replace frayed, broken, or corroded cables.
•
Replace the batteries if their containers are cracked or
worn to the point that they leak.
•
Ensure there is tight contact between the clamp
terminals and battery posts.
•
Make sure the hold-down plate and mounting brackets
are in good condition. Replace any faulty parts.
•
Make sure the hold-down clamp is tight enough to
prevent battery movement, but not so tight as to cause
distortion.
State of Charge
Specific Gravity
Approximate
Open-Circuit
Voltage
(24 V system)
100%
1.260
25.2
75%
1.230
24.8
50%
1.200
24.4
25%
1.170
24.0
0%
1.110
23.6
WARNING
Personal Injury Hazard!
Exposure to battery electrolyte can cause severe burns. If
electrolyte comes in contact with eyes, the area must be
immediately flushed with large amounts of water.
Always wear eye protection when servicing batteries.
REFERENCE
ONLY
Summary of Contents for MLC150-1
Page 1: ...Service Maintenance Manual Manitowoc MLC150 1 R E F E R E N C E O N L Y ...
Page 2: ...R E F E R E N C E O N L Y ...
Page 4: ...THE ORIGINAL LANGUAGE OF THIS PUBLICATION IS ENGLISH R E F E R E N C E O N L Y ...
Page 205: ...R E F E R E N C E O N L Y ...
Page 206: ...R E F E R E N C E O N L Y ...
