420D and 430D Backhoe Loaders Quick Coupler Control (Loader) - If Equipped Caterpillar


Quick Coupler Control (Loader) - If Equipped
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------ WARNING! ------

Improper attachment of work tools could result in injury or death.

Do not operate this machine until you have positive indication that the coupler pins are fully engaged. Check for engagement by:

1. Tilt the work tool down.

2. Put down pressure on the work tool.

3. Back the machine up and make sure there is not any movement between the work tool and the quick coupler assembly.

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Illustration 1g00732844

The quick coupler pin switch (2) with the red lock button (1) is used to engage the pins. The quick coupler pin switch is also used to disengage the quick coupler pins.


NOTICE

Auxiliary hoses for work tools must be removed before the quick coupler pins are disengaged.

Pulling the work tools with the auxiliary hoses could result in machine damage.



Disengage - Pull the red button (1) downward and push down on the top of the quick coupler pin switch (2) to the unlocked position. When the quick coupler pin switch is in the UNLOCKED position, hold the switch for approximately 5 seconds until the coupler pins disengage.


Engage - Press the bottom of the quick coupler pin switch (2) in order to engage the quick coupler pins. The quick coupler pin switch should be in the LOCKED position when you are not disengaging the quick coupler pins.

Note: Before connecting the quick couplers, you must relieve the hydraulic pressure. Refer to Operation and Maintenance Manual, "Leaving the Machine" for more information on relieving the hydraulic pressure.

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