OPERATING PROCEDURES GRT655/655L OPERATOR MANUAL
4-6 Published 3-23-2020, Control # 654-04
A check of the load chart for a 15.2 m (50 ft) radius and
19.5 m (64 ft) of boom length shows a capacity of 3601 kg
(7940 lb) on outriggers over-front and 2254 kg (4970 lb) on
outriggers 360 degrees.
Subtract load handling weight of 632 lb from load capacity of
3601 kg (7940 lb) and 2254 kg (4970 lb). The result is a
weight capacity of 3315 kg (7308 lb) over-the-front and
1968 kg (4338 lb) for 360 degrees.
We are restricted in making the lift over-front only, with a
boom angle of about 29 degrees.
ENGINE OPERATION
Start-up and shutdown procedures for most diesel engines
are generally the same. Therefore, the following procedures
can be applied, except where specific differences are noted.
(Refer to applicable engine manufacturer’s manual for
detailed procedures).
Jump Starting Hazard
Do not attempt to jump start the crane.
This crane has multiple computer systems (crane control,
RCL, engine and 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. Refer to Charging the Batteries, page 4-6.
Charging the Batteries
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.
Start-Up Procedure
1. Make an under-the-hood inspection for fuel, oil, and
coolant leaks, worn drive belts, and trash build-up.
2. Use the correct grade of oil in the crankcase for the
prevailing temperature to prevent hard cranking.
3. Make sure diesel fuel has a cloud point of 6°C (10°F)
less than the lowest expected temperature. In case of an
emergency, white kerosene can be added to the fuel to
bring the pour point down to the required temperature.
This will prevent clogging of filters and small passages
by wax crystals. The addition of kerosene is NOT
recommended for general use.
4. Make sure Battery Disconnect Switch handle (1)
(Figure 4-2) is in the ON position.
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.
DANGER
Diesel engine exhaust can be harmful to your health. Only
operate engine in a well ventilated area or vent exhaust
outside.
CAUTION
Never crank engine for more than 30 seconds during an
attempted start. If engine does not start after 30 seconds,
allow starter motor to cool for two minutes before
attempting another start.
If engine does not start after four attempts, correct
malfunction before attempting another start.
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