Procedure For Blade Solenoid Calibrations on Certain Track-Type Tractors{0785, 5479, 7610} Caterpillar

Track-Type Tractor:

D10R (S/N: AKT1-UP)

D10T (S/N: RJG1-UP)

D10T2 (S/N: RAB1-UP; JJW1-UP)

D11R (S/N: AAF1-UP; 7PZ1-UP)

D11T (S/N: AMA1-UP; GEB1-UP; TPB1-UP; MDG1-UP; JEL1-UP; JNS1-UP)

D3K (S/N: JTD1-UP; FFF1-UP; LLL1-UP)

D4K (S/N: MMM1-UP; RRR1-UP)

D5K (S/N: JLF1-UP; WWW1-UP; YYY1-UP)

D6K (S/N: DHA1-UP; NCF1-UP; FBH1-UP)

D6R Series III (S/N: GJB1-UP; WCB1-UP; HDC1-UP; RFC1-UP; TBC1-UP; HCD1-UP; HKE1-UP; WRG1-UP; MTJ1-UP; DMK1-UP; JEK1-UP; EXL1-UP; JDL1-UP; DLM1-UP; LFM1-UP; LGP1-UP; DPS1-UP; GMT1-UP; MRT1-UP; EXW1-UP)

D6T (S/N: JHB1-UP; ZEB1-UP; SMC1-UP; JWD1-UP; LBD1-UP; LAE1-UP; DJG1-UP; WCG1-UP; WFH1-UP; LKJ1-UP; KJL1-UP; SKL1-UP; GCT1-UP; RLW1-UP; LAY1-UP; PEZ1-UP)

D7E (S/N: MDB1-UP; SCG1-UP)

D7R Series II (S/N: AEC1-UP; ABJ1-UP; AGN1-UP)

D8T (S/N: J8B1-UP; KPZ1-UP)

D9T (S/N: RJS1-UP)

Introduction

This Special Instruction provides the procedure for calibration of hydraulic valve solenoids that are required for certain Track-Type Tractors that use electronic control. This procedure will improve the accuracy of the solenoid calibration and ensure smooth operation of the machine.

Important Safety Information

Do not perform any procedure in this Special Instruction until you have read this Special Instruction and you understand this information. Use only proper tools and observe all precautions that pertain to the use of those tools. Failure to follow these procedures can result in personal injury. The following procedures should also be observed.

Work safely. Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs.

A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools in order to perform these functions properly.

Safety precautions and warnings are provided in this instruction and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons. Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard.

Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. Ensure that any tool, procedure, work method, or operating technique you use that is not recommended by Caterpillar is safe.

Ensure that the product will not be damaged or the product will not be made unsafe by the operation, lubrication, maintenance, or repair procedures used.

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Improper operation of an access platform could result in injury or death. Operators must carry out their duties properly and follow all instructions and guidelines given for the machine and access platform.

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Be sure all personnel are clear of the equipment while the equipment is being lowered. Failure to stay clear of the equipment while the equipment is being lowered may result in personal injury.

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Do not operate or work on this machine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manual. Failure to follow the instructions or heed the warnings could result in injury or death. Contact any Caterpillar dealer for replacement manuals. Proper care is your responsibility.

Note: Prior to operation of the machine read the Operation and Maintenance Manual.

Procedure to Calibrate the Hydraulic Valve Solenoids

All Track-Type Tractor machines require a "pre-charging" sequence as part of the Raise Solenoid, Lower Solenoid, Float Solenoid, Tilt Left Solenoid, and Tilt Right Solenoid calibration processes. This pre-charging sequence is to ensure that the cylinder pressures are more consistent at the start of calibration.

Procedure to Pre-charge the Hydraulic Implement System

Note: Pre-charge of hydraulic implement system is part of the solenoid calibration process. If, this calibration is following a repair to the hydraulic system, remember to exercise the blade to remove any trapped air from the hydraulic lines and cylinders.

Before performing any blade calibrations remember to do the following:

1. Engage the parking brake.

2. Operate the engine at high idle.

3. Place the "Implement Lockout" switch to Not Locked position.

4. Warm the hydraulic oil temperature to rated temperature (differs from machine to machine but is noted in the calibration setup).

5. Raise blade slightly off the ground and adjust blade to mid position for tilt and angle.

Using Caterpillar Electronic Technician (Cat^® ET) Calibrate the Hydraulic Implements Solenoids

1. Connect Caterpillar Electronic Technician (Cat^® ET) to the machine.

2. Open Cat ET and check for active diagnostic codes. If there is an active diagnostic code, the calibration procedure will be stopped until the condition that caused the diagnostic code is corrected.

3. Once any active diagnostic codes are corrected, select the machine Electronic Control Module (ECM) from the available ECM list.

4. Select the "Service" menu in order to begin the calibration procedure. Then select "Calibrations". A second menu will be displayed.

5. Select the desired calibration as follows.

Blade Raise Solenoid Calibration:

1. Begin the blade Raise Solenoid calibration.

2. Give a Raise command with the blade control lever until the blade is approximately 300 mm (11.81 inch) off the ground.

3. Release the blade control handle.

4. Press the "Next" button to start the calibration and follow the Cat ET instructions through the completion of the blade Raise Solenoid calibration.

Blade Lower Solenoid Calibration:

1. Begin the blade Lower Solenoid calibration.

2. Give a Lower command with the blade control lever until the blade is positioned solidly on ground, raises the machine tracks slightly off the ground.

3. Release the blade control handle.

4. If, the calibration method is visual (watching for blade movement to set the calibration point) then:

   1. Give a Raise command with the blade control lever until the blade is positioned approximately 300 mm (11.81 inch) off the ground.

   2. Release the blade control handle.

5. Press the "Next" button to start the calibration and follow the Cat ET instructions through the completion of the blade Lower Solenoid calibration.

Blade Float Solenoid Calibration (If Available):

1. Begin the blade Float Solenoid calibration.

2. Give a Float command with the blade control lever until the blade is positioned solidly on ground, raises the machine tracks slightly off the ground.

3. Release the blade control handle.

4. Press the "Next" button to start the calibration and follow the Cat ET instructions through the completion of the blade Float Solenoid calibration.

Blade Tilt Left Solenoid Calibration (If Available):

1. Begin the blade Tilt Left Solenoid calibration.

2. Place the blade in the air, high enough that the blade will not hit the ground when tilting left or right.

3. Give a Tilt Left command with the blade control lever until the blade moves to the full tilt left position and stalls.

4. Release the blade control handle.

5. Press the "Next" button to start the calibration and follow the Cat ET instructions through the completion of the blade Tilt Left Solenoid calibration.

Blade Tilt Right Solenoid Calibration (If Available):

1. Begin the blade Tilt Right Solenoid calibration.

2. Place the blade in the air, high enough that the blade will not hit the ground when tilting left or right.

3. Give a Tilt Right command with the blade control lever until the blade moves to the full tilt right position and stalls.

4. Release the blade control handle.

5. Press the "Next" button to start the calibration and follow the Cat ET instructions through the completion of the blade Tilt Right Solenoid calibration.