Tadano GT-550E-2, Operation And Maintenance Manual

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Operating the PTO
"PTO" is an abbreviation for "Power Take Off". The
PTO, by engaging the gears, transmits engine power to
the hydraulic pump.
When the PTO gears are engaged (PTO is ON) after
starting the engine, the hydraulic pump is driven, making
hydraulic pressure available for operating the crane. The
hydraulic pump stops when the PTO is disengaged
(PTO is OFF) and the power from the engine is inter-
rupted.
Engaging the PTO
1.
Depress the clutch pedal all the way and place the
PTO switch in the ON position. The PTO lamp will light
up.
䂹
The location of the PTO switch depends on the crane
carrier. See the separate Crane Carrier Operation and
Maintenance Manual.
䂹
For a transmission Hi/Lo switch installed Mitsubishi
carrier, tip the switch to H side.
2.
Slowly release the clutch pedal and remove your
foot.
Disengaging the PTO
1.
Depress the clutch pedal all the way and place the
PTO switch in the OFF position. The PTO lamp will go
out.
2.
Release the clutch pedal.
Warming Up the Machine
[NOTICE]
◆ Be sure to allow your machine to warm up before
the start of every operation. This is especially impor-
tant in cold weather when the engine and hydraulic
oil viscosities are high. If you start an operation
without sufficiently warming up the engine and ma-
chine, highly viscous oils may cause damage to the
engine and hydraulic system.
◆ For this machine, the hydraulic oil temperature
should be within the range of 30°C to 60°C. Operate
the crane at low engine speed until the oil tempera-
ture reaches 30°C or higher.
1.
Let the engine warm up at idling speed for approxi-
mately five minutes after engaging the PTO. When it is
very cold, extend the warm up time as necessary, ac-
cording to the ambient temperature.
2.
Increase the engine speed to between 800 and
1,000 min -1 and operate the crane without a load for ap-
proximately five to ten minutes. When it is very cold,
extend the operating time according to the atmospheric
temperature.
3.
Start a loaded operation after the machine has
been sufficiently warmed up without a load.
Checks to Make during Warmup
䂹 Check the instruments and monitors in the carrier dri-
ver's cab as instructed in the separate Crane Carrier
Operation and Maintenance Manual.
Check the engine, hydraulic pumps, hydraulic motors,
swing bearing and each pivot pin for any unusual sound.
If any are found, stop operation immediately and contact
your nearest TADANO distributor or dealer to have them
inspect your machine.
T023110E
57
Operating the PTO and Warming Up the Machine Operating the PTO and Warming Up the Machine
Operating the PTO and Warming
Up the Machine
Engaging the PTO
See the separate Crane Carrier Operation