TUBE 1221876 - Caterpillar

Illustration 86 g01271352
Measuring the horizontal distance (117) from the center of the boom pivot to the center of the range pole
Measure the distance (117) from the marked centerline (116) of the boom to the center (118) of the range pole.Locating the Slave Receiver at the Boom Pivot
The following steps provide instructions for locating the slave receiver over the boom pivot for the positioning calibration:
Disconnect the installed 285-6657 Wiring Harness from the slave (right) receiver.
Disconnect the 12-pin connector of the 290-1918 Harness As from the 285-6655 Chassis Harness .
Connect the 285-6649 HEX Calibration Harness between the 290-1918 Harness As and the 285-6655 Chassis Harness .
Remove the slave receiver from the machine mast.
Use four 8T-4195 Bolts (119) from the receiver Mast Mount to mount the receiver to the 289-9631 Plate (121) .
Illustration 87 g01827943
Bottom of the receiver with the Calibration Plate attached (119) 8T-4195 Bolts (120) Threaded hole for range pole. (121) 289-9631 Plate (122) Receiver
Screw the range pole into the threaded hole (120) of the calibration plate (121) that is attached to the bottom of the receiver.
Illustration 88 g01827944
Slave receiver mounted on the range pole (121) 289-9631 Plate (122) receiver (123) Range pole (124) Range pole bipod
Connect the slave receiver to the main harness in the cab, using the calibration harness that is in the calibration kit.
The calibration kit contains a device that is used for locating the center of the boom pin during the calibration process. Use the following steps to locate the 3-jaw chuck and the range pole target into the bolt hole in the center of the boom pivot of the machine:
Illustration 89 g01827945
Parts for the 3-jaw chuck (125) 3-jaw chuck (126) Range pole target (127) Allen wrench (128) Chuck key
Insert the center tool pins into the bore of the boom pin on the left side of the machine.
Using the chuck key, increase the diameter until the locating pins are snug against the inner bore of the pin. Note: Do not over-torque the chuck as this action will bend the locating pins.
Install the range pole target into the end of the chuck.
Measure the distance from the center of the boom pin to the target. Record this value for later use in the calibration.
Illustration 90 g01827946
The 3-jaw chuck. (128) Chuck key (129) Chuck jaw identity number (130) Inner threaded holes for the chuck jaws (131) Chuck jaw
The 3-jaw chuck can be used for pin bores of up to 3 inches (75mm). The jaws of the chuck are numbered and the corresponding location (129) for each jaw is also marked on the chuck near where the jaw is installed.For machines with larger pins, the chuck jaws (131) may be removed and, as shown in Illustration 90, inserted in the outer threaded holes. Use the Allen wrench in the kit to remove the pins and reinstall the pins in the outer set of holes.Note: After relocating the jaws, ensure that the jaws move in and move out at equal distances from