D8T Track-Type Tractor TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565} Caterpillar

D8T Track-Type Tractor TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565}

Usage:

D8T J8B

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

Introduction

Inspections are the most basic form of condition monitoring. They are easy to do and surprisingly effective at helping you spot equipment health issues. Proactive monitoring and analysis of equipment information will allow 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.

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Electrical System

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Table 1
Description	Specification	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 in order 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 V	Refer to Special Instruction, REHS0354, "Charging System Troubleshooting"
Electric Starting System Test	12 to 16 V at −23° C (−10° F) to −7° C (19° F)	Refer to Testing and Adjusting, SENR9832, "Electric Starting System - Test"
	14 to 18 V at −7° C (19° F) to 10° C (50° F)
	16 to 24 V 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

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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

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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
	Engine Oil Pressure at Low Idle	103 kPa (15 psi) to 303 kPa (44 psi)
	Engine Oil Pressure at High Idle	400 kPa (58 psi) to 607 kPa (88 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	690 to 710 RPM
Engine Speed at High Idle	2060 to 2080 RPM
Torque Converter Stall Test Engine RPM	1290 to 1310 RPM
Torque Converter Stall Test Engine RPM	1290 to 1310 RPM
Cylinder Cutout Test		Cat^® Electronic Technician (Cat ET) Service Tool

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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
	Boost Pressure at Torque Converter Stall Test Engine RPM
	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⁾
	Cylinder # 7 Exhaust Temperature⁽²⁾
	Cylinder # 8 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, REN7527, "Hydraulic System" for more detail on the following test.

Operational Tests

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Table 7
Status⁽¹⁾	Description	Specification	Actual	Comments
	Bulldozer Lift Cylinder (Full up to ground (Quick-drop))	0.9 to 1.3 seconds
	Bulldozer Lift Cylinder (Ground to full up)	2.8 to 3.5 seconds
	Bulldozer Lift Cylinder (Pause at ground after quick-drop)	1.4 to 2.5 seconds
	Bulldozer Lift Cylinder (Full down to full up)	3.8 to 4.5 seconds
	Bulldozer Lift Cylinder (From ground to full down after pause)	1.3 to 2.0 seconds
	Bulldozer Tilt Cylinder (Full tilt right to full tilt left) Bulldozer Tilt Cylinder (Full tilt left to full tilt right) SU-Blade or U-Blade (single tilt)	2.4 seconds
	Bulldozer Tilt Cylinder (Full tilt right to full tilt left) SU-Blade or U-Blade (dual tilt)	1.8 seconds
	Bulldozer Tilt Cylinder (Full tilt left to full tilt right) SU-Blade or U-Blade (dual tilt)	2.2 seconds
	Bulldozer Tilt Cylinder (Full tilt right to full tilt left) A blade	2.1 seconds
	Bulldozer Tilt Cylinder (Full tilt left to full tilt right) A blade	2.5 seconds
	Ripper Cylinder (Full down to full up)	4.2 seconds
	Ripper Cylinder (Full up to full down)	3.0 seconds
	Ripper Cylinder (Full shank in to full shank out) (retract cylinder)	4.9 seconds
	Ripper Cylinder (Full shank out to full shank in) (extend cylinder)	6.1 seconds

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

Cylinder Drift Test

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Table 8
Status⁽¹⁾	Description	Specification	Actual	Comments
	Bulldozer Lift Cylinder Drift Test	38 mm (1.50 inch) Maximum at 28° to 48° C (83° to 118°F) for 5 minutes
		38 mm (1.50 inch) Maximum at 49° to 68° C (120° to 155°F) for 2.7 minutes
		38 mm (1.50 inch) Maximum at 69° to 88° C (156° to 190°F) for 1.7 minutes
	Bulldozer Tilt Cylinder Drift Test (Single Tilt)	11 mm (0.43 inch) Maximum at 28° to 48° C (83° to 118°F) for 5 minutes
		11 mm (0.43 inch) Maximum at 49° to 68° C (120° to 155°F) for 2.7 minutes
		11 mm (0.43 inch) Maximum at 69° to 88° C (156° to 190°F) for 1.7 minutes
	Ripper Lift Cylinder Drift Test	10 mm (0.39 inch) Maximum at 28° to 48° C (83° to 118°F) for 5 minutes
		10 mm (0.39 inch) Maximum at 49° to 68° C (120° to 155°F) for 2.7 minutes
		10 mm (0.39 inch) Maximum at 69° to 88° C (156° to 190°F) for 1.7 minutes
	Ripper Tip Cylinder Drift Test	6 mm (0.24 inch) Maximum at 28° to 48° C (83° to 118°F) for 5 minutes
		6 mm (0.24 inch) Maximum at 49° to 68° C (120° to 155°F) for 2.7 minutes
		6 mm (0.24 inch) Maximum at 69° to 88° C (156° to 190°F) for 1.7 minutes

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

Hydraulic System

Reference: Refer to Testing & Adjusting, RENR7527, "Hydraulic System" for more detail on the following test.

Pilot System Pressure - Test and Adjust for D8T S/N:KPZ1-UP and ; S/N:J8B1-3999

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Table 9
Status⁽¹⁾	Description	Specification	Actual	Comments
	Pilot System Pressure at High Idle at Pressure Tap (HPS) with Blade Control Lever in Float	3275 ± 170 kPa (475 ± 25 psi)
	Pilot System Pressure at High Idle at Pressure Tap (HPTR), (HPRR), and (HPSI)	3000 ± 515 kPa (435 ± 75 psi)
		3000 ± 515 kPa (435 ± 75 psi)
	Pilot System Pressure at High Idle at Pressure Tap (HPDL)	1760 ± 380 kPa (255 ± 55 psi)

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

Implement Pump - Test and Adjust

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Table 10
Status⁽¹⁾	Description	Specification	Actual	Comments
	Low Pressure Standby) (HA) High Idle	2896 ± 758 kPa (420 ± 110 psi)
	High Pressure Cutoff (HA) High Idle	24000 ± 500 kPa (3481 ± 73 psi)
	High Pressure Cutoff (HA) High Idle	24000 ± 500 kPa (3481 ± 73 psi)
	Margin Pressure at High Idle (Difference between Pressure Tap (HA) and (HB))	2150 ± 350 kPa (312 ± 51 psi)

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

Accumulator - Test and Charge - Pilot for D8T S/N:KPZ1-UP and ; S/N:J8B1-3999

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Table 11
Status⁽¹⁾	Description	Specification	Actual	Comments
	Accumulator Charge Pressure (AP) High Idle	3275 ± 170 kPa (475 ± 25 psi)

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

Accumulator - Test and Charge - Pilot for D8T S/N:J8B4000-UP

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Table 12
Status⁽¹⁾	Description	Specification	Actual	Comments
	Accumulator Charge Pressure (AP) High Idle	2750 ± 300 kPa (399 ± 44 psi)

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

Hydraulic Fan Speed (On Demand) - Test and Adjust

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Table 13
Status⁽¹⁾	Description	Specification	Actual	Comments
	Maximum Fan Pump Pressure at High Idle for Standard or Reversing 22 degree Fan	15700 ± 800 kPa (2275 ± 115 psi)
	Maximum Fan Pump Pressure at High Idle for Standard or Reversing 26 degree Fan	17200 ± 800 kPa (2495 ± 115 psi)
	Minimum Fan Pump Pressure at High Idle	2100 ± 250 kPa (305 ± 36 psi)

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

Power Train System

Reference: Refer to Testing & Adjusting, RENR7526, "Power Train" for more detail on the following test.

Priority Valve - Test and Adjust for D8T S/N:KPZ1-UP and ; S/N:J8B1-3999

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Table 14
Status⁽¹⁾	Description	Specification	Actual	Comments
	Priority Valve Pressure at Low Idle with Brakes disengaged ⁽²⁾	2676 ± 115 kPa (388 ± 17 psi)
	Priority Valve Pressure at Low Idle with Parking Brake engaged and Service Brake disengaged	690 ± 170 kPa (100 ± 25 psi)
	Priority Valve Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL	1035 ± 140 kPa (150 ± 20 psi)
	Priority Valve Pressure at High Idle with Parking Brake engaged and Service Brake disengaged and Transmission Gear at NEUTRAL	1035 ± 170 kPa (150 ± 25 psi)
	Priority Valve Pressure at High Idle with Parking Brake disengaged and Service Brake engaged and Transmission Gear THIRD SPEED FORWARD Stall	825 ± 150 kPa (120 ± 15 psi)

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⁽¹⁾

N = Normal, M = Monitor, A = Action

⁽²⁾

The priority valve is at High Pressure if the engine speed is less than 1300 rpm. The valve remains at High Pressure until the engine speed is greater than 1350 rpm. The priority valve is at High Pressure during changes in transmission speed and direction. The priority valve is at High Pressure if oil temperature (M) is less than 40° C (104° F). The valve remains at High Pressure until the oil temperature is greater than 45° C (113° F). The priority valve remains at Low Pressure whenever the parking brake is engaged.

Relief Valve (Transmission) - Test and Adjust for D8T S/N:KPZ1-UP and ; S/N:J8B1-3999

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Table 15
Status⁽¹⁾	Description	Specification	Actual	Comments
	Transmission Relief Valve Pressure at Low Idle with Brakes disengaged at Pressure Tap (P)	2585 ± 170 kPa (375 ± 25 psi)
	Transmission Relief Valve Pressure at Low Idle with Parking Brake engaged and Service Brake disengaged at Pressure Tap (P)	2585 ± 105 kPa (375 ± 15 psi)
	Transmission Relief Valve Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL at Pressure Tap (P)	2760 ± 140 kPa (400 ± 20 psi)
	Transmission Relief Valve Pressure at High Idle with Parking Brake engaged and Service Brake disengaged and Transmission Gear at NEUTRAL at Pressure Tap (P)	2760 ± 140 kPa (400 ± 20 psi)
	Transmission Relief Valve Pressure at High Idle with Parking Brake disengaged and Service Brake engaged and Transmission Gear THIRD SPEED FORWARD Stall at Pressure Tap (P)	2690 ± 140 kPa (390 ± 20 psi)

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

Relief Valve (Transmission) - Test and Adjust for D8T S/N:J8B4000-UP

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Table 16
Status⁽¹⁾	Description	Specification	Actual	Comments
	Transmission Relief Valve Pressure at Low Idle with Brakes disengaged at Pressure Tap (P)	2585 ± 105 kPa (375 ± 15 psi)
	Transmission Relief Valve Pressure at Low Idle with Parking Brake engaged and Service Brake disengaged at Pressure Tap (P)	2585 ± 105 kPa (375 ± 15 psi)
	Transmission Relief Valve Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL at Pressure Tap (P)	2760 ± 140 kPa (400 ± 20 psi)
	Transmission Relief Valve Pressure at High Idle with Parking Brake disengaged and Service Brake engaged and Transmission Gear THIRD SPEED FORWARD Stall at Pressure Tap (P)	2690 ± 140 kPa (390 ± 20 psi)

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

Relief Valve (Torque Converter Inlet) Pressure - Test

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Table 17
Status⁽¹⁾	Description	Specification	Actual	Comments
	Torque Converter Inlet Pressure at Low Idle with Brakes disengaged at Pressure Tap (M)	375 ± 70 kPa (55 ± 10 psi)
	Torque Converter Inlet Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL at Pressure Tap (M)	760 ± 100 kPa (110 ± 15 psi)
	Torque Converter Inlet Pressure at High Idle with Parking Brake disengaged and Service Brake engaged and Transmission Gear THIRD SPEED FORWARD Stall at Pressure Tap (M)	550 ± 70 kPa (80 ± 10 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 18
Status⁽¹⁾	Description	Specification	Actual	Comments
	Torque Converter Outlet Pressure at Low Idle with Brakes disengaged at Pressure Tap (N)	375 ± 70 kPa (55 ± 10 psi)
	Torque Converter Outlet Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL at Pressure Tap (N)	585 ± 100 kPa (85 ± 15 psi)
	Torque Converter Outlet Pressure at High Idle with Parking Brake disengaged and Service Brake engaged and Transmission Gear THIRD SPEED FORWARD Stall at Pressure Tap (N)	450 ± 70 kPa (65 ± 10 psi)

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

Transmission Lubrication Oil Pressure - Test

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Table 19
Status⁽¹⁾	Description	Specification	Actual	Comments
	Transmission Lubrication Oil Pressure at Low Idle with Brakes disengaged at Pressure Tap (L1)	14 + 14 - 10 kPa (2 + 2 - 1.5 psi)
	Transmission Lubrication Oil Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL at Pressure Tap (L1)	210 ± 35 kPa (30 ± 5 psi)
	Transmission Lubrication Oil Pressure at High Idle with Parking Brake disengaged and Service Brake engaged and Transmission Gear THIRD SPEED FORWARD Stall at Pressure Tap (L1)	105 ± 35 kPa (15 ± 5 psi)

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

Flywheel Lubrication Oil Pressure - Test

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Table 20
Status⁽¹⁾	Description	Specification	Actual	Comments
	Flywheel Lubrication Oil Pressure at Low Idle with Brakes disengaged at Pressure Tap (L2)	205 ± 105 kPa (30 ± 15 psi)
	Flywheel Lubrication Oil Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL for European Union at Pressure Tap (L2)	380 ± 170 kPa (55 ± 25 psi)

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

Transmission Clutch Pressure - Test for D8T S/N:KPZ1-UP and ; S/N:J8B1-3999

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Table 21
Status⁽¹⁾	Description	Specification	Actual	Comments
	Clutch Engagement at Relief Pressure Setting of the Transmission No. 1 Clutch through No. 4 Clutch	Low Idle 2620 ± 105 kPa (380 ± 15 psi)
	Clutch Engagement at Relief Pressure Setting of the Transmission No. 5 Clutch	Low Idle 2240 ± 105 kPa (325 ± 15 psi)

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

Steering System

Reference: Refer to Testing & Adjusting, RENR7527, "Hydraulic System" for more detail on the following test.

Steering Pump - Test and Adjust

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Table 22
Status⁽¹⁾	Description	Specification	Actual	Comments
	Charge Pressure (High Idle) at Pressure Tap (F)	2930 ± 240 kPa (425 ± 35 psi)
	POR Valve Pressure (HC) and (HD) 1600 rpm	40505 ± 1555 kPa (5875 ± 226 psi)
	Mechanical Neutral Pressure (HC) and (HD) 1500 rpm	345 kPa (50 psi) between pressure taps
	Hydraulic Neutral Pressure (X1) and (X2) 1500 rpm	48 kPa (7 psi) between pressure taps

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

Braking System

Reference: Refer to Testing & Adjusting, RENR7526, "Power Train" for more detail on the following test.

Brake Pressure - Test for D8T S/N:KPZ1-UP and ; S/N:J8B1-3999

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Table 23
Status⁽¹⁾	Description	Specification	Actual	Comments
	Brake Pressure at Low Idle with Brakes disengaged at Pressure Tap (B)	2483 ± 140 kPa (360 ± 20 psi)
	Brake Pressure at Low Idle with Parking Brake engaged and Service Brake disengaged at Pressure Tap (B)	70 kPa (10 psi) Maximum
	Brake Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL at Pressure Tap (B)	2550 ± 210 kPa (370 ± 30 psi)
	Brake Pressure at High Idle with Parking Brake engaged and Service Brake disengaged and Transmission Gear at NEUTRAL at Pressure Tap (B)	70 kPa (10 psi) Maximum
	Brake Pressure at High Idle with Parking Brake disengaged and Service Brake engaged and Transmission Gear THIRD SPEED FORWARD Stall at Pressure Tap (B)	70 kPa (10 psi) Maximum
	Left Brake Lubrication Pressure at Low Idle with Brakes disengaged	18 + 18 - 17 kPa (2.6 + 2.6 - 2.5 psi)
	Right Brake Lubrication Pressure at Low Idle with Brakes disengaged	18 + 18 - 17 kPa (2.6 + 2.6 - 2.5 psi)
	Left Brake Lubrication Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL	140 ± 70 kPa (20 ± 10 psi)
	Right Brake Lubrication Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL	140 ± 70 kPa (20 ± 10 psi)
	Left Brake Lubrication Pressure at High Idle with Parking Brake disengaged and Service Brake engaged and Transmission Gear THIRD SPEED FORWARD Stall	70 ± 35 kPa (10 ± 5 psi)
	Right Brake Lubrication Pressure at High Idle with Parking Brake disengaged and Service Brake engaged and Transmission Gear THIRD SPEED FORWARD Stall	70 ± 35 kPa (10 ± 5 psi)

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

Brake Pressure - Test for D8T S/N:J8B4000-UP

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Table 24
Status⁽¹⁾	Description	Specification	Actual	Comments
	Brake Pressure at Low Idle with Brakes disengaged at Pressure Tap (B)	2386 ± 187 kPa (346 ± 27 psi)
	Brake Pressure at Low Idle with Parking Brake engaged and Service Brake disengaged at Pressure Tap (B)	70 kPa (10 psi) Maximum
	Brake Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL at Pressure Tap (B)	2558 ± 187 kPa (371 ± 27 psi)
	Brake Pressure at High Idle with Parking Brake disengaged and Service Brake engaged and Transmission Gear THIRD SPEED FORWARD Stall at Pressure Tap (B)	70 kPa (10 psi) Maximum
	Left Brake Lubrication Pressure at Low Idle with Brakes disengaged	18 + 18 - 17 kPa (2.6 + 2.6 - 2.5 psi)
	Right Brake Lubrication Pressure at Low Idle with Brakes disengaged	18 + 18 - 17 kPa (2.6 + 2.6 - 2.5 psi)
	Left Brake Lubrication Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL	140 ± 70 kPa (20 ± 10 psi)
	Right Brake Lubrication Pressure at High Idle with Brakes disengaged and Transmission Gear at NEUTRAL	140 ± 70 kPa (20 ± 10 psi)
	Left Brake Lubrication Pressure at High Idle with Parking Brake disengaged and Service Brake engaged and Transmission Gear THIRD SPEED FORWARD Stall	70 ± 35 kPa (10 ± 5 psi)
	Right Brake Lubrication Pressure at High Idle with Parking Brake disengaged and Service Brake engaged and Transmission Gear THIRD SPEED FORWARD Stall	70 ± 35 kPa (10 ± 5 psi)