Medium L and M Series Wheel Loaders Cat Production Measurement Application on Machines Equipped with Product Link: PLE631 or PLE641 Caterpillar

Bucket Zero

The Zero function is used to adjust for changes in the empty bucket weight due to bucket wear or excess material stuck in the bucket. Perform bucket zero when:

• When prompted by the software

• Not achieving desired accuracy

• Ground Engagement Tool (GET) change

• Material carryback change

• On startup

A zero is performed to improve the accuracy of the Cat^® Production Measurement application.

Zero Messages

Zero messages instruct the operator to perform a zero lift. The zero lift is performed to correct the following:

• Changes to the material that is in the bucket

• Changes in the hydraulic oil temperature

Details for each message are shown below:

Perform Zero - Zero Timer Expired

This message is displayed when the following occurs:

• The machine has been running for more than 5 minutes and this application has not been zeroed

• More than 4 hours passed since a zero was performed

Perform Zero - Hydraulic Oil Temp Changed

This message is displayed when the following occurs:

• The system has detected a significant change in oil temperature

• The change occurred since the previous zero was performed

Zeroing an Empty Bucket

Zero an empty bucket when:

• Any of the above two messages are displayed on the screen

• On startup

• When carryback is occurring and not able to be removed

Perform the following to zero an empty bucket:

1. Rack an empty bucket back.

2. Lift through the weigh range.

3. Verify that the weight is a scaled weight with a green box.

4. Press bucket zero button.

   Alert message area will report either:

   • "Zero Accepted"

   • "Weight Too Heavy to Zero"

The total amount of the weight that can be zeroed can only be less than or equal to 66% of the calibration weight.