AccuGrade® GPS Using The CD550A Display (GPS/ATS/Sonic/Cross Slope) Caterpillar

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If the system is in Automatic Mode, blade movement may occur. Ensure that the system is in Manual Mode. Personal injury or death from crushing could occur if the system is not in Manual Mode.

The system requires machine dimensions in order to calculate the cross slope from the cross slope sensors and cut the edge position for GPS and ATS. "Machine Type" determines which measurements need to be taken. Ensure that the correct type of machine is selected before taking measurements. Refer to Systems Operation, Testing and Adjusting, Troubleshooting, RENR8088, "Machine Type - Configuration".

Center the Blade

Make sure that the blade is perpendicular to the main frame.

1. Park the machine on level ground.

2. Put the frame in the straight position.

3. Make sure that the front wheels of the grader are vertical.

4. Make sure that the link bar is centered with the locking pin in the middle hole.

5. Level the blade with a level.

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Illustration 1	g01079442

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Illustration 2	g01101537

6. Measure the distance from each side of the moldboard for the blade to the corresponding blade beam.

7. Shift the blade to the side until the measurements are equal.

   The distance that is measured should be within 12.7 mm (0.5 inch) of each other.

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Illustration 3	g01205701

8. Whenever you need to rotate the blade, align the mark with the upper part of the circle.

Rotation of the Blade

Note: Make sure that the blade is level.

Note: Make sure that the machine is on a level surface.

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Illustration 4	g01079446

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Illustration 5	g01108390

1. Locate a point at the front of the frame that is also centered on the frame.

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Illustration 6	g01108395

2. Measure from the point that is shown in Illustration 5 to the edge of the moldboard that is located on each end of the blade

3. Rotate the blade until the measurements are equal.

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Illustration 7	g01108401

4. Adjust the Bracket (82) of the zero alignment gauge to the lower pointer (93) .

5. Tighten the bolts.

   Note: Do not move the machine. The machine is ready for machine measure up and the system calibrations.

Measuring The Position Of The Mast

The angle bracket of the mast has 7 bolt holes:

• Bolt hole 1 is nearest to the front of the grader.

• Bolt hole 7 is nearest to the operator's cab.

You must position the blade and the machine correctly in order to record the following measurements for each antenna:

• Height above the cutting edge bolts

• Distance from the cutting edge bolts

• Distance from the blade tip to the antenna

Illustration 8 shows the angle bracket in bolt hole 5.

Illustration 8	g01189157
Angle bracket in bolt hole 5

Alignment of the Machine and the Blade

Complete the following steps in order to position the machine and make measurements:

1. Select a bolt hole according to the measurement of the position of the blade and the antenna.

2. Rest the blade on the ground and make sure that the cutting edge bolts are level.

3. Pitch the moldboard forward until the left mast is vertical in the forward or backward direction.

Carry out these steps and consider the following points:

• When the machine is straight the blade is horizontal and touching the ground. Use a spirit level to position the machine. See Illustration 9.

Illustration 9	g01189161
Balancing the cutting edge

• Make sure that both sides of the blade are level.

• Use the spirit level in order to ensure that the left mast is vertical in the forward or backward direction. You may need to make minor adjustments by pitching the moldboard. If you move the moldboard you must check the blade level by following the procedure above.

• Measure both masts in this position. Even if the right mast is not absolutely vertical do not move the blade before completing all of the measurements.

The machine is now ready to perform all measurements.

Note: The machine and the blade must be in the same position for each bolt hole during the operation of the AccuGrade System.

Note: If the machine is on uneven ground place a board under each blade tip. The boards must be horizontal and held at the same height. The boards must be large so that the plumb bob can touch the boards from any part of the ground plane of the GPS antenna.

Illustration 10	g01214150
Measurements of the Grader (A) Top of lower housing height above cutting edge bolts - right (B) Top of lower housing height above cutting edge bolts - left (C) Distance of the GPS Receiver back from cutting edge bolts - right (D) Distance of the GPS Receiver back from cutting edge bolts - left (E) Distance of the GPS Receiver in from blade tip - right (F) Distance of the GPS Receiver in from blade tip - left (G) Blade height (H) Blade width (I) Distance between lift rams

Illustration 11	g01213437
Grader Settings For ATS Target That Is Mounted On The Right Mast (A) ATS target height above cutting edge bolts - right. This value established by benching. (C) ATS target back from cutting edge bolts - right (D) ATS target in from blade tip - right (negative if antenna out from blade tip) (I) Blade height - from cutting edge bolts to top of blade (J) Blade width between tips (K) Ram distance (L) Mast Lean in from blade tip. Negative angle when the mast leans out from the blade. (M) Mast Lean back - Negative angle when the Mast leans back.

Using The Measurement Tool

The measurement tool for the GPS Receiver allows you to measure the height of the GPS Receiver above the blade and the horizontal offsets of the GPS Receiver from the blade.

The measurement tool consists of the following components:

• A length of alloy that is angled with slots and mounting holes on both sides

• Mounting bracket of a GPS receiver

Note: See Illustration 12.

Illustration 12	g01189264
Measurement tool and mounting bracket

Before you start the measurement you need to mount the length of the angled alloy on the mounting bracket of the GPS receiver. The measurement tool must be mounted on the correct side so that the units are marked on the horizontal surface. Mount the measurement tool on top of the mast of the GPS receiver during the process of measurement.

Measuring the GPS Receiver Offsets

Note: First measure the offsets of the GPS receiver on the left side. Then measure the offsets of the GPS receiver on the right side.

To make these measurements, you need the following equipment:

• Measurement tool for the GPS Receiver

• Steel tape or ruler

• Spirit level or straight edge

• Plumb bob

• String line

• Steel framing square

• Ladder (2.4 m (8.0 ft))

Note: Use the measurement tool for the GPS Receiver instead of measuring directly to the GPS Receiver. If you do not have a measurement tool for the GPS Receiver the measurement of height should be made to the top of the lower housing on the GPS Receiver.

Complete the following steps for the measurement of the offset of the GPS Receiver backward from the mounting bolts of the cutting edge:

1. Remove the GPS Receiver from the mounting bracket. Put the GPS Receiver in the case. This is for protection.

2. Mount the measurement tool for the GPS Receiver onto the mounting bracket of the GPS Receiver.

3. Slide the mounting bracket onto the top of the mast.

4. Rotate the measurement tool to a perpendicular position. The measurement tool must point forward. See Illustration 13.

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Illustration 13	g01189282
Measurement tool in a parallel position with the center line of the grader

5. Secure the plumb bob line on one of the notches in the measurement tool so that the plumb bob line hangs in front of the mounting bolts of the cutting edge.

6. Measure the distance from the plumb bob line to the center of the mounting bolts of the cutting edge. Use the steel framing square in order to perform the measurement. See Illustration 14.

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Illustration 14	g01189285
Measuring from the plumb bob line to the center of the mounting bolts of the cutting edge

7. Subtract the value from Step 6 from the distance on the notch of the measurement tool for the distance backward from the mounting bolts of the cutting to the antenna.

   Note: If the center of the GPS antenna is in front of the center of the mounting bolts of the cutting edge the difference is a negative value.

8. Enter the difference into the "Back from cutting edge bolts" field in the"Mast Positions" dialog.

   Refer to the "Grader Record Sheets" Section for additional information on entering the data.

Complete the following steps for measuring the height of the GPS Receiver above the mounting bolts of the cutting edge:

1. Leave the measurement tool in the position for the measurement of the distance backward from the bolts of the cutting edge.

2. Make sure that the spirit level or the straight edge is level before taking the measurement.

3. Anchor the measuring tape onto the measurement tool and measure the distance to the middle of the mounting bolts of the cutting edge. See Illustrations 15 and 16.

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Illustration 15	g01189296
Measuring from the measurement tool

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Illustration 16	g01189298
Measuring to the center of the mounting bolts of the cutting edge

4. Make sure that the "Measure height to" field is set correctly.

5. Enter this value into the "Above cutting edge bolts" field in the "Mast Positions" dialog.

   Refer to the "Grader Record Sheets" Section for additional information on entering the data.

Complete the following steps for the measurement of the offsets from the GPS Receiver to the outside of the blade tip:

1. Rotate the measurement tool so that the tool is parallel to the cutting edge of the blade and the tool extends beyond the edge of the blade. See Illustration 17.

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Illustration 17	g01189307
Aligning the measurement tool

2. Secure the plumb bob line from a centered notch in the measurement tool. The plumb bob line must hang directly over the square.

   Note: Remember the notch that secures the plumb bob line.

3. Measure the distance from the tip of the blade to the intersection of the square and the plumb bob line. See Illustration 18.

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Illustration 18	g01189314
Measuring from the blade tip to the plumb bob

4. Subtract the value from the measurement in Step 3 from the distance on the notch of the measurement tool for the Antenna in from the blade tip distance.

   Note: If the center of the mast is outside the blade tip, this number is negative.

5. Enter this value into the "In from blade tip" field in the "Mast Positions" dialog.

   Refer to the "Grader Record Sheets" Section for additional information on entering the data.

Blade Dimension Measurements

This section outlines the measurements required for the blade, cutting edge and rippers.

Measuring the Blade Height

To measure the blade height, complete the following steps:

1. Measure the distance from the center of the cutting edge mounting bolts to the top of the blade. See Illustration 19.

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Illustration 19	g01189319
Measuring the blade height

2. Enter the value into the Blade height field in the Blade Dimensions dialog

   Refer to the "Grader Record Sheets" Section for additional information on entering the data.

   Note: The measurement is only used to display the relative height of the blade when Cross-section View is selected. Unlike the other measurements, the exact height of the blade is not critical to the operation of the AccuGrade System.

Measuring the Blade Width Between Tips

To measure the blade width, complete the following steps:

1. Measure the distance that is shown in Illustration 20.

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Illustration 20	g01189324
Measuring the blade width between tips

2. Enter the value into the Blade width between tips field in the Blade Dimensions dialog.

   Refer to the "Grader Record Sheets" Section for additional information on entering the data.

   The AccuGrade System uses the Blade width between tips measurement along with the Antenna in from blade tip measurement for system verification during start-up.

Measuring the Distance between the Lift Rams

To measure the distance between the lift rams, complete the following steps:

1. Measure the distance shown in Illustration 21.

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Illustration 21	g01189404
Distance between the lift ram balls

2. Enter this value into the Distance between lift rams field in the Blade Dimensions dialog.

   Refer to the "Grader Record Sheets" Section for additional information on entering the data.

Measuring the Cutting Edge

To measure the cutting edge at any bolt hole position have the spirit level and the steel tape or ruler ready.

Measurement Bolt Hole

Enter the number of the bolt hole that is in use for this measurement into the Measurement bolt hole field in the Blade Dimensions dialog.

Note: Bolt hole 1 is nearest to the front of the grader and bolt hole 7 is nearest to the operator's cab.

For more information about this dialog refer to the AccuGrade 3D Reference Manual.

Refer to the "Grader Record Sheets" Section for additional information on entering the data.

Measuring The Horizontal Distance

To measure the horizontal distance from the center of the cutting edge bolts to the cutting edge complete the following steps:

1. Stand the spirit level against the front of the cutting edge.

2. Make sure the spirit level is vertical.

3. Measure the horizontal distance from the center of the cutting edge mounting bolts to the spirit level. See Illustration 22.

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Illustration 22	g01189413
Measuring the horizontal distance

4. Enter this value into the Cutting edge horizontal distance field in the Cutting Edge Dimensions dialog.

   Refer to the "Grader Record Sheets" Section for additional information on entering the data.

Measuring The Vertical Distance

To measure the vertical distance from the center of the cutting edge bolts to the cutting edge, complete the following steps:

1. Rest the spirit level on the center of the cutting edge mounting bolts.

2. Make sure the spirit level is horizontal.

3. Measure the vertical distance from the bottom edge of the spirit level to the tip of the cutting edge. See Illustration 23.

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Illustration 23	g01189451
Measuring the vertical distance

4. Enter this value into the Cutting edge vertical distance field in the Cutting Edge Dimensions dialog.

   Refer to the "Grader Record Sheets" Section for additional information on entering the data.

Measuring the Ripper Distance

To measure the ripper distance back from cutting edge bolts, complete the following steps:

1. Lower the rippers to the ground.

2. Measure the horizontal distance from the cutting edge bolts to the ripper teeth

3. Enter this value into the Ripper back from cutting edge field in the Rpper Dimensions dialog.

   Refer to the "Grader Record Sheets" Section for additional information on entering the data.

Note: When measuring up a machine, always enter a distance in the Ripper Distance field. If the machine does not have rippers, enter the distance to the back of the machine. This distance is used in order to calculate the back of the machine for Avoidance Zone warnings.

Measuring the Machine Body

To measure the distance back from the cutting edge to be used for avoidance zone calculations, complete the following steps:

1. Measure the distance from the front of the machine to the cutting edge.

2. Enter this value into the Distance from the front of the machine to the cutting edge field in the Machine Body Dimensions dialog.

3. Measure the distance from the back of the machine to the cutting edge.

4. Enter this value into the Distance from the back of the machine to the cutting edge field in the Machine Body Dimensions dialog.

   Refer to the "Grader Record Sheets" Section for additional information on entering the data.

Grader Record Sheets

Use the "Setup Menu-Installation" dialog to enter machine settings into the AccuGrade System.

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Illustration 24	g01206364

1. To view all options in the "Setup Menu" dialog you must start the AccuGrade System in "Service" mode.

   Note: Hold the "OK" button and the "ENTER" simultaneously while you turn on the Display in order to start the AccuGrade System in "Service" mode.

   Note: Keep a copy of all machine settings because you may need to enter them again. To record the settings on each machine, use the machine record sheets provided in this section.

   Note: You must set the measurement parameters before using the system.

2. Press the "Menu" key until the "Setup Menu" key is shown on the Display.

   This will display the "Setup Menu".

   Refer to Illustration 24.

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Illustration 25	g01212608

3. Press the "Installation" key to access the "Installation" menu.

   Use the arrow keys to select the "Machine Dimensions" option.

4. Press the "OK" key.

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Illustration 26	g01212610

5. Select the "Mast Dimension" option with the up arrow or down arrow keys.

6. Press the "OK" key.
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   1. Use the arrow Soft Key in order to navigate through the menus screens and enter the data with the arrow keys.
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   2. Use the Mast Measurements option to enter the dimension that were recorded for the masts.
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   Illustration 29	g01212630

   3. Use the Bolt Holes menu to indicate which bolt holes will be used.

7. Press the arrow soft key in order to move to the next page.
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   Illustration 30	g01212635

   1. Use the Mast measurements screen to record the mast and blade measurement that were recorded previously.

   2. Press the arrow soft key to move to the next page.

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Illustration 31	g01212639

8. Press the "Finish" soft key to return the "Machine Dimensions" menu.

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Illustration 32	g01212663

9. Use the arrow keys to select the "Machine Dimensions" option and press the "OK" key.

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Illustration 33	g01212665

10. Use the arrow keys to enter the data and the next key to navigate between options.

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Illustration 34	g01212681

11. When all the information has been entered, press the "Cutting Edge" soft key.

    Use the arrow keys to enter the data and the next key to navigate between options.

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Illustration 35	g01212687

12. When all the information has been entered, press the "Ripper" soft key.

    Use the arrow keys to enter the data and the next key to navigate between options.

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Illustration 36	g01212690

13. When all the information has been entered, press the "Machine Body" soft key.

    Use the arrow keys to enter the data and the next key to navigate between options.

14. When all the information has been entered, press the "OK" key to save the data and exit.

Display Settings

Machine Settings - Installation Menu