Grove
Published 01-14-2021 Control # 707-01
3-23
TMS9000-2 SERVICE MANUAL
ELECTRICAL SYSTEM
3
Remote Controller Battery
Remove/install the battery into the remote transmitter or
charger by squeezing the tab on the base of the battery and
pulling/pushing the battery out/in.
JUMP STARTING THE CRANE
Do not attempt to jump start the crane.
All crane models, particularly those produced since 2000,
have multiple computer systems (crane control, RCL, engine
& transmission control) that are highly susceptible to voltage/
amperage surges in the electrical system.
The batteries should be completely disconnected from the
crane electrical system and charged using a battery charger
of appropriate voltage level or replace the batteries with fully
charged batteries.
Charging
When charging the batteries, do not turn on the battery
charger until the charging leads have been connected to the
battery(s). Also, if the battery(s) are found to be frozen, do
not attempt to charge them. Remove the battery(s) from the
crane, allow them to thaw, and then charge the battery(s) to
full capacity.
“Slow charging” is preferred to “fast charging”. Fast charging
saves time but risks overheating the battery(s). Slow
charging at six (6) amps or less develops less heat inside the
battery and breaks up the sulfate on the battery plates more
efficiently to bring the battery up to full charge. The use of a
“smart charger” that automatically adjusts the charging
amperage rate should be used.
CAUTION
It is strongly recommended that the batteries not be
“jumped” with a different vehicle, portable power pack,
etc. The surge of power from these sources can
irreparably damage the various electronic controls and
computer systems. Jump starting the crane batteries
with a different vehicle while the engine is running can
damage the donor vehicle electronics as well if done
improperly.
Fo
r
Reference
Only