Quickhitch; Excavator Arm Quickhitch - jcb JS300 Service Manual

Tracked excavators - tier 4i isuzu engine

Hide thumbs Also See for JS300:

Table of Contents

CAUTION When the Quickhitch is installed and its attachment attached, there is a danger of the attachment

hitting the machine. Operate the boom and dipper carefully when the Quickhitch and its attachment are

CAUTION When the Quickhitch is attached to the machine, allowance must be made for the weight of the

Quickhitch on the rated operating load. The mass of the Quickhitch is stamped on the data plate.

The excavator Quickhitch, which is attached to the dipper enables the fast removal and installation of buckets

and other attachments.

To prevent premature wear, failure and breakage, the Quickhitch assembly must be used with a rockbreaker

for short periods only. If the machine is to be used for rock breaking for a long period of time, it is recommended

that the rockbreaker is installed directly on the machine. When using a rockbreaker, it must be curled towards

the machine (as a typical digging operation). Do not use the rockbreaker as a lever as this causes excessive

loads on the locking mechanism.

If at any point in the Quickhitch process, the operator can move the Quickhitch switch to position 1 to de-

activate the system (confirm using the colour display when necessary), the operation will be cancelled and the

system shall revert to an inactive state.

1. Start the machine and enable the controls.

2. Lift the Quickhitch off of the ground with the dipper approximately vertical.

3. Crowd the Quickhitch.

4. To activate Quickhitch move the Quickhitch switch to position 3. The switch LED (Light Emitting Diode) will

illuminate red and the buzzer will sound constantly.

Refer to: Attachments > Quickhitch > Excavator Arm Quickhitch (Page 155).

5. The colour display will display a reminder to the operator to disconnect the attachment hoses before

continuing. The reminder screen is displayed for up to 5 seconds and the buzzer sounds constantly until

the Quickhitch button on the right joystick is pressed to confirm Quickhitch mode. If the 5 second timer

expires the system shall revert to an inactive state.

Refer to: Operation > Operating Levers/Pedals > Excavator Arm Controls (Page 96).

6. Press the Quickhitch button on the right joystick to confirm Quickhitch mode, the buzzer will sound

intermittently and the Boom Warning light and switch LED will flash. If the Quickhitch button on the right

joystick is not pressed then the system will return to the Quickhitch inactive state.

Quickhitch

Table of Contents