HOSE 3828730 - Caterpillar

Full Raise Calibration
Required Conditions
The following conditions must be met for 500 milliseconds:
The engine is running with no ground speed.
The duty cycle output is in a range of 50 to 95 percent.
The current full up duty cycle must be greater than the previous full up duty cycle.
The hoist control lever must be in RAISE mode or in HOLD mode.Note: When the bed has reached the maximum height, the operator should move the hoist lever from the RAISE position to the HOLD position. Five seconds after the hoist lever is in position the calibration will begin.The following occurs when all the conditions are met for 500 milliseconds:
The calibration value will be the average of the values that were recorded during the 500 milliseconds.
If the current upper calibration value is less than the previous upper calibration value, then the value will not change.Expected Values
When the bed is fully raised, the Chassis ECM expects a value of less than 96 percent PWM.If the expected PWM value is not obtained, then an FMI 03 will be logged. If this event occurs, then perform the "Rod Adjustment" in the "Body Position Sensor - Adjust" section.Known Issues
The following issues could prevent calibration of the position sensor. The issues could cause sensor diagnostics to be logged.Wear on the Body Pins
Wear on the body pins could cause the position sensor to provide an incorrect value. This value could cause diagnostic faults to register against the sensor.If the body pins are worn, perform the "Rod Adjustment" in the "Body Position Sensor - Adjust". Verify that the angle of the body is less than 7 degrees when the body is fully lowered.The Body Does Not Drop Fully
If the body does not drop fully to the frame rails, perform the following:
Adjust the "Hoist Lower Valve Adjustment Status" value with Cat® Electronic Technician (Cat® ET).
Perform a body up/ body down cycle.
Continue to adjust the "Hoist Lower Valve Adjustment Status" value until the desired snubbing is obtained.Body Position Sensor - Adjust
Rod Adjustment
The following adjustment may be required for the "Chassis" ECM to calibrate the position sensor:
Disconnect rod (3) from the body.
Loosen nut (2) on rod (3).
Twist the rod (3) to get a distance of 360 3 mm (14.2 0.1 inch) between the centers of the rod ends (5).
Tighten nut (2).
Reattach rod (3) to the body.Angle Verification
Verify that the angle of the body is within tolerance when any of the following components are replaced:
A Sensor
A Body
An ECMNote: If the angle is not within tolerance, then the "Chassis" ECM cannot correctly calibrate the position sensor.Lower the body to the frame rails. If the value is less than 7 degrees, the software in the "Chassis" ECM calibrates the sensor. The calibration is performed automatically by the "Chassis" ECM when the body is raised and lowered. If the value is not less than 7 degrees, then perform the "Rod Adjustment" in the "Body Position Sensor - Adjust" section.797F Body Position Sensor Calibration
Illustration 2 g02451016
(6) Rod end
(7) Nut
(8) Rod
(9) Body position sensor
(10) Centers of the rod