Operating the PTO and Warming Up the Machine

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 interrupted.

Engaging the PTO

1. Turn on rocker switch “PTO”

2. Set the key-actuated switch “chassis-superstructure” to switch position “2”

◆ Outriggers are inoperable while the switch position “2” is selected.

Key-actuated

Disengaging the PTO

1. Turn off rocker switch “PTO”

2. Set key-actuated switch “chassis-superstructure” to switch position “1”

◆ See the separate Crane Carrier Operation and Maintenance Manual.

Warming Up the Machine

[NOTICE]

◆ Be sure to allow your machine to warm up before the start of every operation. This is especially important in cold weather when the engine and hydraulic oil viscosities are high. If you start an operation without sufficiently warming up the engine and machine, highly viscous oils may cause damage to the engine and hydraulic system.

1. Let the engine warm up at idling speed for approximately five minutes after starting the engine. When it is very cold, extend the warm up time as necessary, according to the ambient temperature.

2. After installing the outriggers, turn on rocker switch “PTO”.

3. Increase the engine speed to between 800 and 1,000 r/min and operate the crane without a load for approximately five to ten minutes. When it is very cold, extend the operating time according to the atmospheric temperature.

4. Start a loaded operation after the machine has been sufficiently warmed up without a load.

Checks to Make during Warmup

◆ Check the instruments and monitors in the carrier driver'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..