SPINDLE 3243270 - Caterpillar

Introduction
The problem listed below does not have a known permanent solution. Until a permanent solution is identified, use the steps listed below to diagnose and repair your machine.Problem
Fault codes and malfunctioning of Cat Grade and Slope have been reported on the listed Asphalt Pavers.Reported symptoms include:
The padlock icon appears in middle of the grade control screen when no other screen is interacting with the same function.
The tow point cylinder fully extends or retracts without command.
"Grade and Slope ECM Disconnected" messages appear.
"Check Machine ECM" messages appear.
The measured value on screen is replaced by "-" and system shows sensor as disconnected in diagnostic menu.To investigate and diagnose the faults, diagnostic data must be captured just after the event or error occurs. Information about operating conditions leading up to the event or error is also important for investigation.Solution
To diagnose Cat Grade Control errors or malfunctions, work with your dealer Technical Communicator (TC) using the following approach:
Recognize whether a true problem exists.
Collect and analyze information about symptoms and operating conditions.Note: Cat Grade Control diagnostic information is separate from the machine ECM and is not retrieved with Cat Electronic Technician (Cat ET). When a grade control error occurs, a yellow banner will appear on the screen. There are no code numbers associated with the yellow banner error messages. Errors from the machine are indicated by a wider yellow message, with associated error code numbers.Determine the Existence of a True Problem
After an error is indicated, take note of the following:
Surrounding operating conditions prior to the error or malfunction.
Sensors must be set up correctly.
Sensor connections must be tight and dry.
Erratic behavior of the crew prior to the error or malfunction.
Understand the repeatability of the error or malfunction.
Observe how often the error or malfunction occurs.Gather Information for Analysis
Initiate a Dealer Solution Network (DSN) ticket through your dealer TC. Collect and provide information to the DSN as follows:
Record the exact date and time of occurrence.
Record the exact yellow banner message on the grade control screen. Take a photo if possible.
Initiate a "Z Snap" within 1 minute of the error occurrence. See "Z Snap Process" below.
Retrieve and compress the diagnostic files collected by "Z Snap". See "Retrieving Diagnostic Files" and "Compressing (Zipping) Diagnostic Files" below.
Provide the machine serial number, sensor configuration, and any additional photos or information.E-mail your dealer TC (or DSN contact) the information listed above. Attach the compressed diagnostic information files.Z Snap Process
The "Z Snap" is obtained by swiping a finger from the LOWER RIGHT corner to the UPPER RIGHT corner of the main grade control screen. A camera symbol will appear in the center of the screen. A "Diagnostics Recorded – Changed to Manual" message may appear, indicating the grade system diagnostic data is being stored. Do not touch the screen or any buttons when the camera symbol is present. If the grade system was in AUTO when the "Z Snap" was initiated, the grade system will enter manual mode.The system can be reset or placed back into automatic mode after the camera symbol is