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

Track-Type Tractor

D8T (S/N: FMC1-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

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 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, UENR3551, "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)

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

Engine

Cooling System

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

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

Fuel System

Table 3

Status(1)	Description	Specification	Actual	Comments
	Fuel Pressure of the Low Pressure Fuel System	738 kPa (107 psi)

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

Lubrication System

Table 4

Status(1)	Description	Specification	Actual	Comments
	Engine Oil Pressure at Low Idle	179 kPa (26 psi)
	Engine Oil Pressure	503 kPa (73 psi)

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

Basic Engine

Table 5

Status(1)	Description	Specification	Actual	Comments
	Engine Speed at Low Idle	650 ± 10 rpm
	Engine Speed at High Idle	2000 ± 10 rpm
	Cylinder Cutout Test			Cat® Electronic Technician (Cat ET) Service Tool

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

Air Inlet and Exhaust System

Table 6

Status(1)	Description	Specification	Actual	Comments
	Boost Pressure at Torque Converter Stall Test Engine RPM	141.7 ± 21.3 CM_HG (55.8 ± 8.4 IN_HG)
	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)

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

Performance Checks

Reference: Refer to Testing & Adjusting, UENR1389, "Hydraulic Systems" for more detail on the following test.

Operational Checks

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)	4.9 seconds
	Ripper Cylinder (Full shank out to full shank in)	6.1 seconds

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

Cylinder Drift Test

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	11 mm (.43 inch) Maximum at 28° to 48° C (83° to 118°F) for 5 minutes
		11 mm (.43 inch) Maximum at 49° to 68° C (120° to 155°F) for 2.7 minutes
		11 mm (.43 inch) Maximum at 69° to 88° C (156° to 190°F) for 1.7 minutes
	Ripper Lift Cylinder Drift Test	10 mm (.39 inch) Maximum at 28° to 48° C (83° to 118°F) for 5 minutes
		10 mm (.39 inch) Maximum at 49° to 68° C (120° to 155°F) for 2.7 minutes
		10 mm (.39 inch) Maximum at 69° to 88° C (156° to 190°F) for 1.7 minutes
	Ripper Tip Cylinder Drift Test	6 mm (.24 inch) Maximum at 28° to 48° C (83° to 118°F) for 5 minutes
		6 mm (.24 inch) Maximum at 49° to 68° C (120° to 155°F) for 2.7 minutes
		6 mm (.24 inch) Maximum at 69° to 88° C (156° to 190°F) for 1.7 minutes

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

Hydraulic System

Reference: Refer to Testing & Adjusting, UENR1389, "Hydraulic Systems" for more detail on the following test.

Piston Pump (Implement) - Test & Adjust

Table 9

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)
	Margin Pressure (HA) High Idle	2150 ± 350 kPa (312 ± 51 psi)

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

Accumulator (Pilot) - Test and Charge

Table 10

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

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

Power Train System

Reference: Refer to Testing & Adjusting, UENR1389, "Power Train System" for more detail on the following test.

Relief Valve (Transmission) - Test and Adjust

Table 11

Status(1)	Description	Specification	Actual	Comments
	Low Idle (P)	2585 ± 105 kPa (375 ± 15 psi)

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

Relief Valve (Torque Converter Inlet) Pressure - Test

Table 12

Status(1)	Description	Specification	Actual	Comments
	High Idle (M)	Less than 900 ± 70 kPa (130 ± 10 psi)

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

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

Table 13

Status(1)	Description	Specification	Actual	Comments
	High Idle THIRD SPEED FORWARD STALL(N)	450 ± 70 kPa (65 ± 10 psi)

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

Transmission Lubrication Oil Pressure - Test

Table 14

Status(1)	Description	Specification	Actual	Comments
	High Idle (L1)	210 ± 35 kPa (30 ± 5 psi)
	Low Idle (L1)	14 kPa +14 -10 (2 +2 -1.5 psi)

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

Flywheel Lubrication Oil Pressure - Test

Table 15

Status(1)	Description	Specification	Actual	Comments
	High Idle (R)	517 ± 172 kPa (75 ± 25 psi)
	Low Idle (R)	290 ± 103 kPa (42 ± 15 psi)

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

Transmission Clutch Pressure - Test

Table 16

Status(1)	Description	Specification	Actual	Comments
	First Speed Forward (Low Idle)	Clutch 2 2585 ± 105 kPa (375 ± 15 psi)
		Clutch 5 2240 ± 170 kPa (325 ± 25 psi)
	Second Speed Forward (Low Idle)	Clutch 2 and Clutch 4 2585 ± 105 kPa (375 ± 15 psi)
	Third Speed Forward (Low Idle)	Clutch 2 and Clutch 3 2585 ± 105 kPa (375 ± 15 psi)
	Neutral (Low Idle)	Clutch 3 2585 ± 105 kPa (375 ± 15 psi)
	First Speed Reverse (Low Idle)	Clutch 1 2585 ± 105 kPa (375 ± 15 psi)
		Clutch 5 2240 ± 170 kPa (325 ± 25 psi)
	Second Speed Reverse (Low Idle)	Clutch 1 and Clutch 4 2585 ± 105 kPa (375 ± 15 psi)
	Third Speed Reverse (Low Idle)	Clutch 1 and Clutch 3 2585 ± 105 kPa (375 ± 15 psi)

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

Steering System

Reference: Refer to Testing & Adjusting, KENR####, "Steering System" for more detail on the following test.

Steering Pump - Test and Adjust

Table 17

Status(1)	Description	Specification	Actual	Comments
	Charge Pressure (High Idle)	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

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

Braking System

Reference: Refer to Testing & Adjusting, KENR####, "Braking System" for more detail on the following test.

Brake Pressure - Test

Table 18

Status(1)	Description	Specification	Actual	Comments
	High Idle at Pressure Tap (B1)	2558 ± 187 kPa (371 ± 27 psi)
	Low Idle at Pressure Tap (B1)	2386 ± 187 kPa (346 ± 27 psi)
	High Idle Right Final Drive	2558 ± 187 kPa (371 ± 27 psi)
	Low Idle Right Final Drive	2386 ± 187 kPa (346 ± 27 psi)
	High Idle Left Final Drive	2558 ± 187 kPa (371 ± 27 psi)
	Low Idle Left Final Drive	2386 ± 187 kPa (346 ± 27 psi)
	High Idle Left Final Drive Lube	140 ± 70 kPa (20 ± 10 psi)
	Low Idle Left Final Drive Lube	18 +18 -17 kPa (2.6 +2.6 -2.5 psi)
	High Idle Right Lube	140 ± 70 kPa (20 ± 10 psi)
	Low Idle Right Lube	21 +21 -20 kPa (3 +3 -2.9 psi)
	Parking Brake or Service Brake engaged at Pressure Tap (B1)	70 kPa (10 psi)

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

S.O.S

Reference: Refer to Operation and Maintenance Manual, SEBU9087, "Maintenance Interval Schedule" for more detail on performing S.0.S samples.

Table 19

Status(1)	Description	Obtain		Comments
	Engine Oil Sample	Every 250 Service Hours
	Cooling System Coolant Sample (Level II)	Initial 500 Hours and Every 200 Service Hours or 1 Year
	Hydraulic Oil Sample	Every 500 Service Hours
	Power Train System Oil Sample	Every 500 Service Hours
	Final Drive Oil Sample	Every 500 Service Hours

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