D7R Track-Type Tractor TA2 Technical Inspection{0372, 1000, 7000, 753T, 7565} Caterpillar

Track-Type Tractor:

D7R (S/N: R7B1-UP; R7C1-UP; DSH1-UP; R7H1-UP; DLN1-UP; DJR1-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 effectively 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

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1. Click format to print.

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3. Open the document with Microsoft Word.

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, SENR1028, "Electrical System".
		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	772 kPa (112 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Lubrication System

Table 4

Status (1)	Description	Specification	Actual	Comments
	Engine Oil Pressure at Low Idle	138 kPa (20 psi)
	Engine Oil Pressure	352 kPa (51 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Basic Engine

Table 5

Status (1)	Description	Specification	Actual	Comments
	Low Idle RPM	700 ± 10 rpm
	High Idle RPM	2250 ± 10 rpm
	Torque Converter Stall Test Engine RPM	1400 ± 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	139.9 ± 21.1 CM_HG (55.1 ± 8.3 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)	-

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

Operational Checks

ReferenceRefer to Testing & Adjusting, UENR0044, "Testing and Adjusting Section" for more detail on the following test.

Operational Checks

Cycle Times

Table 7

Status (1)	Description	Specification	Actual	Comments
	Blade RAISE (Ground Level to Maximum Height)	4.3 seconds
	Blade LOWER (Fully Raise Position to Ground)	5.6 seconds
	Tilt (Right to Left)(S and SU Blade)	2.4 seconds
	Tilt (Right to Left)(A Blade)	1.8 seconds
	Ripper RAISE (Full travel from full LOWER to full RAISE without the shank)	2.8 seconds

( 1 )

N = Normal, M = Monitor, A = Action

Drift

Table 8

Status (1)	Description	Specification	Actual	Comments
	Bulldozer Lift Cylinder Drift Test	38 mm (1.50 inch) Maximum at 28° C (83° F) to 48° C (119° F) for 5 minutes
		38.1 mm (1.50 inch) Maximum at 49° C (120° F) to 68° C (154° F) for 2.7 minutes
		38.1 mm (1.50 inch) Maximum at 69° C (156° F) to 88° C (190° F) for 1.7 minutes
	Bulldozer Tilt Cylinder Drift Test	11.2 mm (0.44 inch) Maximum at 38° C (100 ° F) to 49° C (120° F) for 5 minutes
		11 mm (0.43 inch) Maximum at 49° C (120° F) to 66° C (150° F) for 2.7 minutes
		11 mm (0.43 inch) Maximum above 66° C (150° F) for 1.7 minutes
	Ripper Lift Cylinder Drift Test	10 mm (0.39 inch) Maximum at 28° C (82° F) to 48° C (119° F) for 5 minutes
		10 mm (0.39 inch) Maximum at 49° C (120° F) to 68° C (155° F) for 2.7 minutes
		10 mm (0.39 inch) 69° C (156° F) to 88° C (190° F) for 1.7 minutes

( 1 )

N = Normal, M = Monitor, A = Action

Hydraulic System

ReferenceRefer to Testing & Adjusting, UENR0044, "Hydraulic Systems" for more detail on the following test.

Pump Discharge Pressure - Test

Table 9

Status (1)	Description	Specification	Actual	Comments
	Implement Pump Pressure	Low Pressure Standby (Low Idle) at pressure tap (HA) less than 2850 ± 750 kPa (415 ± 110 psi)
		Margin pressure (High Idle) at pressure tap (HA) - (HB) 2100 ± 100 kPa (305 ± 15 psi)
		High-pressure cutoff pressure (High Idle) at pressure tap (HA) with pump stalled 38500 ± 700 kPa (5585 ± 100 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Pressure Limiter Valve - Test

Table 10

Status (1)	Description	Specification	Actual	Comments
	Bulldozer Lift High Idle (HA port)	22750 ± 300 kPa (3300 ± 43.5 psi)
	Bulldozer Tilt High Idle (HA port)	17225 ± 300 kPa (2500 ± 43.5 psi)
	Ripper Lift High Idle (HA port)	22750 ± 300 kPa (3300 ± 43.5 psi)
	Ripper Tip High Idle (HA port)	22750 ± 300 kPa (3300 ± 43.5 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Pressure Reducing Valve - Test and Adjust

Table 11

Status (1)	Description	Specification	Actual	Comments
	Pilot Pressure for the Pressure Reducing Valve	(High Idle) at pressure tap (HA) 3275 ± 175 kPa (475 ± 25 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Accumulator (Pilot) - Test and Charge

Table 12

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

( 1 )

N = Normal, M = Monitor, A = Action

Power Train System

ReferenceRefer to Testing & Adjusting, UENR0041, "Power Train System" for more detail on the following test.

Priority Valve - Test and Adjust

Table 13

Status (1)	Description	Specification	Actual	Comments
	High Idle at tap (PV)	2551 ± 35 kPa (370 ± 5 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Transmission Controls

Table 14

Status (1)	Description	Specification	Actual	Comments
	Pressure at tap (P1)	High Idle 2482 ± 140 kPa (360 ± 20 psi)
	Pressure at tap (P2)	High Idle (P1) - 380 ± 35 kPa (55 ± 5 psi) less than the pressure at high idle
	Pressure at tap (P1)	Low Idle 2206 kPa (320 psi)
	Pressure at tap (P2)	Low Idle (P1) - 380 ± 35 kPa (55 ± 5 psi) less than the pressure at high idle
	Pressure tap (P1) with load plug (LP) removed	531 ± 34 kPa (77 ± 5 psi)

( 1 )

N = Normal, M = Monitor, A = Action

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

Table 15

Status (1)	Description	Specification	Actual	Comments
	Torque Converter Inlet Relief Valve	High Idle at pressure tap (M) greater than 650 kPa (94 psi)

( 1 )

N = Normal, M = Monitor, A = Action

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

Table 16

Status (1)	Description	Specification	Actual	Comments
	Torque Converter Outlet Relief Valve	High Idle at pressure tap (N) greater than 414 kPa (60 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Transmission Lubrication Oil Pressure - Test

Table 17

Status (1)	Description	Specification	Actual	Comments
	Transmission Lubrication	High Idle with all brakes disengaged at pressure tap (L1) 393 ± 48 kPa (57 ± 7 psi)
		Low Idle with all brakes disengaged at pressure tap (L1) greater than 19 kPa (3 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Flywheel Lubrication Oil Pressure - Test

Table 18

Status (1)	Description	Specification	Actual	Comments
	Flywheel Lubrication	High Idle with all brakes disengaged at pressure tap (L2) 310 ± 105 kPa (45 ± 15 psi)
		Low Idle with all brakes disengaged at pressure tap (L2) greater than 205 ± 70 kPa (30 ± 10 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Steering System

ReferenceRefer to Testing & Adjusting, UENR0044, "Testing and Adjusting" for more detail on the following test.

Pump Discharge Pressure - Test

Table 19

Status (1)	Description	Specification	Actual	Comments
	Pump Pressure	Low Pressure Standby (Low Idle) at pressure tap (HA) less than 2850 ± 750 kPa (415 ± 110 psi)
		Margin pressure (High Idle) at pressure tap (HA) - (HB) 2100 ± 100 kPa (305 ± 15 psi)
		High-pressure cutoff pressure (High Idle) at pressure tap (HA) with pump stalled 38500 ± 700 kPa (5585 ± 100 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Steering Hydraulic Circuit - Test

Table 20

Status (1)	Description	Specification	Actual	Comments
	Margin Pressure at Mid Steer	Margin pressure (High Idle) at pressure tap (HA) - (HB) 2100 ± 100 kPa (305 ± 15 psi)
	Steering Stall (Mid Steer Right Position)	High Idle at pressure tap (HA) with pump stalled 38500 ± 700 kPa (5585 ± 100 psi)
	Steering Stall (Mid Steer Left Position)	High Idle at pressure tap (HA) with pump stalled 38500 ± 700 kPa (5585 ± 100 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Braking System

ReferenceRefer to Testing & Adjusting, UENR0041, "Testing and Adjusting Section" for more detail on the following test.

Brake Pressure - Test

Note: Machine must be in the raised position.

Table 21

Status (1)	Description	Specification	Actual	Comments
	Brake Pressure	High Idle pressure tap (B1) 2828 ± 138 kPa (410 ± 20 psi)
		Low Idle pressure tap (B1) 2625 ± 175 kPa (380 ± 25 psi)
		Pressure with brakes applied at pressure tap (B1) greater than 7 kPa (1 psi)
	Brake Lubrication	High Idle pressure tap (LB2 (Right Brake)) (LB1 (Left Brake)) 90 ± 35 kPa (13 ± 5 psi)
		Low Idle pressure tap (LB2 (Right Brake)) (LB1 (Left Brake)) greater than 3 kPa (0.4 psi)

( 1 )

N = Normal, M = Monitor, A = Action

S.O.S

ReferenceRefer to Operation and Maintenance Manual, SEBU8592, "Maintenance Interval Schedule" for more detail on the following S.O.S.

Table 22

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

( 1 )

N = Normal, M = Monitor, A = Action