D6N Track-Type Tractor TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565} Caterpillar

D6N Track-Type Tractor TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565}

Usage:

D6N GB6

Track-Type Tractor: D6N (S/N: MG51-UP; GB61-UP; SGG1-UP; NJN1-UP)

Introduction

Inspections are the most basic form of condition monitoring. Inspections are easy to perform and surprisingly effective at helping you spot equipment health issues. Proactive monitoring and analysis of equipment information allows Dealers to intervene before problems occur.

Note: Before adjusting product settings to comply with listed baseline TA2 values, consult SIS for the latest specification values.

Creating an Electronic Copy

Use the following procedure to create an editable electronic copy from SIS Web.

Click format to print.
Save the document as an HTML format.
Open the document with Microsoft Word.

Electrical System

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Table 1
Status⁽¹⁾	Description	Specification	Actual	Comments
	Inspect Battery Cables	Cables between the battery, the starter, and the engine ground must be the correct size. Wires and cables must be free of corrosion. Wires and cables must have cable support clamps to prevent stress on battery connections (terminals)
	Battery Test	12.4 VDC or more		Refer to Special Instruction, SEHS7633, "Battery Test Procedure".
	Charging System Test	28 ± 1 VDC		Refer to Special Instruction, REHS0354, "Charging System Troubleshooting".
	Electric Starting System Test	14 ± 2 VDC at −23° C (−10° F) to −7° C (19° F)		Refer to Specifications, System Operation, Testing and Adjusting, UENR4081, "Electric Starting System - Test".
		16 ± 2 VDC at −7° C (19° F) to 10° C (50° F)
		20 ± 4 VDC at 10° C (50° F) to 27° C (80° F)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Engine

Cooling System

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Table 2
Status⁽¹⁾	Description	Specification	Actual	Comments
	Radiator Pressure Relief (Radiator Cap)⁽²⁾
	Freezing Point of Engine Coolant
	Conditioner Test of Engine Coolant
	Difference between the Upper and Lower Radiator Tank Temperatures
	Jacket Water Outlet Temperature
	Aftercooler Water Outlet Temperature
	Jacket Water Inlet Temperature from Cooling System
	Oil Cooler Water Outlet Temperature

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⁽¹⁾	N = Normal, M = Monitor, A = Action
⁽²⁾	Test for the pressure that is listed on the cap.

Fuel System

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Table 3
Status⁽¹⁾	Description	Specification	Actual	Comments
	Fuel Pressure of the Low-Pressure Fuel System at Idle Speed	150 kPa (22 psi)
	Maximum Fuel Pressure of the High-Pressure Fuel System	200 MPa (29000 psi)
	Fuel Ratio Control	Enter Value

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Lubrication System

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Table 4
Status⁽¹⁾	Description	Specification	Actual	Comments
	Minimum Engine Oil Pressure at Maximum Engine Speed	315 kPa (45 psi)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Basic Engine

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Table 5
Description	Specification	Comments
Engine Speed at Low Idle	850 RPM
Engine Speed at High Idle	1800 RPM
Torque Converter Stall Test Engine RPM	1860 ± 30 RPM
Torque Converter Stall Test Engine RPM	1860 ± 30 RPM
Cylinder Cutout Test		Cat^® Electronic Technician (Cat ET) Service Tool
Engine Crankcase Pressure (Blowby)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Air Inlet and Exhaust System

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Table 6
Status⁽¹⁾	Description	Specification	Actual	Comments
	Cylinder # 1 Exhaust Temperature⁽²⁾
	Cylinder # 2 Exhaust Temperature⁽²⁾
	Cylinder # 3 Exhaust Temperature⁽²⁾
	Cylinder # 4 Exhaust Temperature⁽²⁾
	Cylinder # 5 Exhaust Temperature⁽²⁾
	Cylinder # 6 Exhaust Temperature⁽²⁾

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⁽¹⁾	N = Normal, M = Monitor, A = Action
⁽²⁾	Compare the exhaust temperature variance at each exhaust port.

Performance Checks

Reference: Refer to Testing & Adjusting, UENR4081, "Testing and Adjusting Section" for more detail on the following test.

Operational Checks (Hydraulic System)

Cycle Times

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Table 7
Status⁽¹⁾	Description	Specification	Actual	Comments
	Blade RAISE (Ground Level to Maximum Height)	2.7 ± 0.2 seconds
	Blade LOWER (Maximum Height to Ground Level)	1.6 ± 0.2 seconds
	Blade LOWER float (Maximum Height to Ground Level)	1.5 ± 0.2 seconds
	Tilt (Right to Left)	1.3 ± 0.2 seconds
	Tilt (Left to Right)	1.3 ± 0.2 seconds
	Angle (Left to Right)	3.4 ± 0.2 seconds
	Ripper RAISE (Ground to Maximum Height)	2.0 ± 0.2 seconds
	Ripper LOWER (Maximum Height to Ground)	2.5 ± 0.2 seconds

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Drift

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Table 8
Status⁽¹⁾	Description	Specification	Actual	Comments
	Bulldozer Lift Cylinder Drift Test	32 mm (1.3 inch) Maximum at 38° C (100° F) to 49° C (120° F) for 5 minutes
		32 mm (1.3 inch) Maximum at 49° C (120° F) to 66° C (150° F) for 2.7 minutes
		32 mm (1.3 inch) Maximum above 66° C (150° F) for 1.7 minutes
	Bulldozer Tilt Cylinder Drift Test	13 mm (0.5 inch) Maximum at 38° C (100 ° F) to 49° C (120° F) for 5 minutes
		13 mm (0.5 inch) Maximum at 49° C (120° F) to 66° C (150° F) for 2.7 minutes
		131 mm (0.5 inch) Maximum above 66° C (150° F) for 1.7 minutes
	Ripper Lift Cylinder Drift Test	25 mm (1.0 inch) Maximum at 38° C (100 ° F) to 49° C (120° F) for 5 minutes
		25 mm (1.0 inch) Maximum at 48° C (120° F) to 66° C (150° F) for 2.7 minutes
		25 mm (1.0 inch) Maximum above 66° C (150° F) for 1.7 minutes

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Hydraulic System

Reference: Refer to Testing & Adjusting, UENR4081, "Hydraulic Systems" for more detail on the following test.

Piston Pump (Implement) - Test and Adjust

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Table 9
Status⁽¹⁾	Description	Specification	Actual	Comments
	Load Sensing Pressure Stall (High Idle) (P6)	23400 kPa (3394 psi)
	High-Pressure Stall (High Idle) (P5)	25100 kPa (3641 psi)
	High-Pressure Stall (High Idle) (P5)	25100 kPa (3641 psi)
	Margin Pressure (High Idle) (P5 - P6)	1700 ± 100 kPa (247 ± 15 psi)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Accumulator (Pilot) - Test and Charge

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Table 10
Status⁽¹⁾	Description	Specification	Actual	Comments
	Accumulator Charge Pressure at HIGH IDLE	3300 ± 140 kPa (478 ± 20 psi)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Power Train System

Reference: Refer to Testing & Adjusting, UENR4081, "Power Train System" for more detail on the following test.

Relief Valve (Transmission) - Test and Adjust

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Table 11
Status⁽¹⁾	Description	Specification	Actual	Comments
	Relief Valve (Transmission) (Low Idle) (P)	2525 ± 125 kPa (366 ± 18 psi)
	Relief Valve (Transmission) (High Idle) (P)	2650 ± 150 kPa (384 ± 22 psi)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Torque Converter Lockup Clutch Pressure - Test

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Table 12
Status⁽¹⁾	Description	Specification	Actual	Comments
	Pressure Difference between Tap (LUC) and (P) (Low Idle) (Neutral)	195 ± 50 kPa (28 ± 7 psi)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Relief Valve (Torque Converter Inlet) Pressure - Test

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Table 13
Status⁽¹⁾	Description	Specification	Actual	Comments
	Torque Converter Inlet Relief Valve (Cold Oil Start-up) (High Idle) (R1)	≤ 895 kPa (130 psi)
	Torque Converter Inlet Relief Valve (Normal Operating Temperatures) (High Idle) (R1)	450 ± 100 kPa (65 ± 15 psi)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Relief Valve (Torque Converter Outlet) Pressure - Test and Adjust

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Table 14
Status⁽¹⁾	Description	Specification	Actual	Comments
	Torque Converter Outlet Relief Valve (High Idle) (3.0F Stall) (N)	480 ± 70 kPa (70 ± 10 psi)
	Engine RPM during Stall	1860 ± 30

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Transmission Lubrication Oil Pressure - Test

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Table 15
Status⁽¹⁾	Description	Specification	Actual	Comments
	Transmission Lubrication (High Idle) (L1)	250 ± 50 kPa (36 ± 7 psi)
	Transmission Lubrication (Low Idle) (L1)	90 ± 30 kPa (13 ± 4 psi)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Transmission Clutch Pressure - Test

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Table 16
Status⁽¹⁾	Description	Specification	Actual	Comments
	Clutch Engagement at Relief Pressure Setting of the Transmission No. 1 Clutch through No. 4 Clutch (Low Idle)	2650 ± 150 kPa (384 ± 22 psi)
	Clutch Engagement at Relief Pressure Setting of the Transmission No. 5 Clutch (Low Idle)	2422 ± 275 kPa (351 ± 40 psi)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Steering System

Reference: Refer to Testing & Adjusting, UENR4081, "Testing and Adjusting" for more detail on the following test.

Steering Hydraulic Circuit - Test and Adjust

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Table 17
Status⁽¹⁾	Description	Specification	Actual	Comments
	Right Steer Stall Pressure (1800 RPM)	45300 ± 1140 kPa (6570 ± 165 psi)
	Left Steer Stall Pressure (1800 RPM)	45300 ± 1140 kPa (6570 ± 165 psi)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Relief Valve (Charge) - Test and Adjust

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Table 18
Status⁽¹⁾	Description	Specification	Actual	Comments
	Steering Charge Pressure (High Idle) (H)	3300 ± 140 kPa (478 ± 20 psi)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Case Pressure (Steering Pump) - Check

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Table 19
Status⁽¹⁾	Description	Specification	Actual	Comments
	Steering Pump Case Pressure (High Idle) (R)	40 ± 25 kPa (6 ± 4 psi)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

Braking System

Reference: Refer to Testing & Adjusting, UENR4081, "Testing and Adjusting Section" for more detail on the following test.

Brake Pressure - Test

Note: Additional test may be performed for testing the brake pressure.

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Table 20
Status⁽¹⁾	Description	Specification	Actual	Comments
	Brake Pressure with All Brakes Released (High Idle) (R3)	2455 ± 100 kPa (356 ± 15 psi)
	Brake Pressure with All Brakes Released (Low Idle) (R3)	2225 ± 125 kPa (323 ± 18 psi)
	Brake Pressure with Parking Brake on or the Service Brakes Fully Engaged (R3)	< 30 kPa (4 psi)
	Left Brake Lube Pressure (High Idle)	45 ± 25 kPa (7 ± 4 psi)
	Right Brake Lube Pressure (High Idle)	35 ± 25 kPa (5 ± 4 psi)

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⁽¹⁾	N = Normal, M = Monitor, A = Action

S.O.S

Refer to Operation and Maintenance Manual, SEBU9220, " Maintenance Interval Schedule" for more detail on the following S.O.S.

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Table 21
Status⁽¹⁾	Description	Obtain	Comments
	Engine Oil Sample	Every 250 Service Hours or Monthly
	Cooling System Coolant Sample (Level I)	Every 500 Service Hours or 3 Months
	Cooling System Coolant Sample (Level II)	Every 2000 Service Hours or 1 Year
	Hydraulic Oil Sample	Every 500 Service Hours
	Final Drive Oil Sample	Every 500 Service Hours
	Power Train System Oil Sample	Every 500 Service Hours