D7E Track-Type Tractor TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565} Caterpillar

Track-Type Tractor

D7E (S/N: HKA1-UP; SSH1-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.

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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 Testing and Adjusting, UENR3402, "Battery -Test" Refer to Special Instruction, SEHS7633, "Battery Test Procedure"
	Charging System Test	28 ± 1 V		Refer to Testing and Adjusting, UENR3402, "Charging System - Test" 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, UENR3402, "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)			Use 9S-8140 Pressurizing Pump to test the radiator pressure cap. 20 kPa (3 psi) more than the pressure marked on the cap.
	Freezing Point of Engine Coolant
	Conditioner Test of Engine Coolant
	Belt Tension	801 ± 44 N (180 ± 10 lb) for new belts 645 ± 44 N (145 ± 10 lb) for used belts		Auto adjust belt tensioner
	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

(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
	Maximum fuel pressure of the High-Pressure fuel system	190 MPa (27557 psi)

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

Lubrication System

Table 4

Status(1)	Description	Specification	Actual	Comments
	Engine Oil Pressure at Low Idle	48 kPa (7 psi)
	Engine Oil Pressure at High Idle	152 kPa (22 psi)

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

Basic Engine

Table 5

Status(1)	Description	Specification	Actual	Comments
	Engine Speed at Low Idle
	Engine Speed at High Idle
	Cylinder Cutout Test			Cat® Electronic Technician (Cat ET) Service Tool
	Engine Crankcase Pressure (Blowby)

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

Air Inlet and Exhaust System

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)	-

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

Performance Checks

Reference: Refer to Testing & Adjusting Section, UENR4065 for more detail on the following test.

Bulldozer Cylinder Operational Checks

Table 7

Status(1)	Description	Specification	Actual	Comments
	Bulldozer RAISE (ground level to maximum height)	2.2 seconds
	Bulldozer fast LOWER (maximum height to ground level)	1.1 seconds
	Pause at ground after fast lower	1.1 seconds
	Bulldozer LOWER from ground to full lower (after pause)	1.8 seconds
	Bulldozer full lower to maximum height	3.4 seconds

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

Bulldozer Blade Operational Checks

Table 8

Status(1)	Description	Specification	Actual	Comments
	A-Blade Tilt (full left to full right)	2.5 seconds
	A-Blade Tilt (full right to full left)	1.7 seconds
	All other blades (Single Tilt) (full left to full right)	1.9 seconds
	All other blades (Single Tilt) (full right to full left)	1.9 seconds
	All other blades (Dual Tilt) (full left to full right)	1.5 seconds
	All other blades (Dual Tilt) (full right to full left)	1.5 seconds

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

Ripper Operational Checks

Table 9

Status(1)	Description	Specification	Actual	Comments
	Ripper (full raise to full lower)	4.9 seconds
	Ripper (full lower to full raise)	3.7 seconds
	Ripper (full shank in to full shank out)	3.2 seconds
	Ripper (full shank out to full shank in)	4.3 seconds

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

Bulldozer Lift Cylinder Drift

Table 10

Status(1)	Description	Beginning rod length	Time	Specification	Actual	Comments
	Bulldozer Lift Cylinder Drift Test (Oil temperature of 69 to 88°C (156 to 190°F))		1.7 minutes	Maximum Drift 38 mm (1.5 inch)
	Bulldozer Lift Cylinder Drift Test (Oil temperature of 49 to 68°C (120 to 155°F))		2.7 minutes	Maximum Drift 38 mm (1.5 inch)
	Bulldozer Lift Cylinder Drift Test (Oil temperature of 28 to 48°C (82 to 119°F))		5 minutes	Maximum Drift 38 mm (1.5 inch)

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

Bulldozer Tilt Cylinder Drift

Table 11

Status(1)	Description	Beginning rod length	Time	Specification	Actual	Comments
	Bulldozer Tilt Cylinder Drift Test (Oil temperature of 63 to 80°C (145 to 176°F))		1.0 minute	Maximum Drift 25 mm (0.98 inch)
	Bulldozer Tilt Cylinder Drift Test (Oil temperature of 49 to 62°C (120 to 144°F))		1.7 minutes	Maximum Drift 25 mm (0.98 inch)
	Bulldozer Tilt Cylinder Drift Test (Oil temperature of 39 to 48°C (102 to 118°F))		2.6 minutes	Maximum Drift 25 mm (0.98 inch)
	Bulldozer Tilt Cylinder Drift Test (Oil temperature of 0 to 38°C (32 to 100°F))		3.2 minutes	Maximum Drift 25 mm (0.98 inch)

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

Bulldozer Ripper Lift Cylinder Drift

Table 12

Status(1)	Description	Beginning rod length	Time	Specification	Actual	Comments
	Bulldozer lift cylinder drift test (oil temperature of 69 to 88°C (156 to 190°F))		1.7 minute	Maximum Drift 10.0 mm (0.39 inch)
	Bulldozer Tilt Cylinder Drift Test (Oil temperature of 49 to 68°C (120 to 155°F))		2.7 minutes	Maximum Drift 10.0 mm (0.39 inch)
	Bulldozer Tilt Cylinder Drift Test (Oil temperature of 28 to 48°C (83 to 118°F))		5.0 minutes	Maximum Drift 10.0 mm (0.39 inch)

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

Bulldozer Ripper Cylinder Drift

Lower the ripper in order to raise the rear of the tractor before conducting any measurements for the test.

Table 13

Status(1)	Description	Beginning rod length	Time	Specification	Actual	Comments
	Bulldozer Ripper Cylinder Drift Test (Oil temperature of 69 to 88°C (156 to 190°F))		1.7 minutes	Maximum Drift 6.0 mm (0.24 inch)
	Bulldozer Ripper Cylinder Drift Test (Oil temperature of 49 to 68°C (120 to 155°F))		2.7 minutes	Maximum Drift 6.0 mm (0.24 inch)
	Bulldozer Ripper Cylinder Drift Test (Oil temperature of 28 to 48°C (83 to 118°F))		5 minutes	Maximum Drift 6.0 mm (0.24 inch)

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

Hydraulic System

Reference: Refer to Testing & Adjusting Section, UENR4065 for more detail on the following test.

Piston Pump (Implement) - Test & Adjust

Table 14

Status(1)	Description	Specification	Actual	Comments
	Engine speed	High Idle
	Pump discharge pressure at standby (HA)	Greater than 1800 kPa (260 psi)
	Pump discharge while the blade is in motion. (HA)	Variable(2)
	Pump signal pressure while the blade is in motion. (HB)	Variable (2)
	Calculate margin Pressure while the blade is in motion (HA) - (HB)	2150 ± 350 kPa (312 ± 50 psi)
	High-Pressure Cutoff, (HA) port	27600 ± 500 kPa (4000 ± 75 psi)

(1)	N = Normal, M = Monitor, A = Action
(2)	The bulldozer control lever should be moved to about 33% of the total travel distance.

Case Drain (Hydraulic Fan Motor) - Test

Table 15

Status(1)	Description	Specification	Actual	Comments
	Engine speed	High Idle
	Fan override	Set to 0%
	Measured quantity should not exceed the following amount	4.0 L/min (1.06 US gpm)

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

Case Drain (Hydraulic Fan Pump) - Test

Table 16

Status(1)	Description	Specification	Actual	Comments
	Engine speed	High Idle
	Fan override	Set to 0%
	Measured quantity should not exceed the following amount	4.0 L/min (1.06 US gpm)

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

Hydraulic Fan Speed (On Demand) - Test and Adjust

Table 17

Status(1)	Description	Specification	Actual	Comments
	Engine speed	High Idle
	Oil Temp	65° C (150° F)
	Fan RPM measured with tooling (D) with the fan bypass override set to 0%	1430 ± RPM Target fan speed before any correction factor is applied
	Pressure at (HFPD) with fan bypass override set to 100%	2150 ± 350 kPa (312 ± 51 psi)

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

Power Train System

Reference: Refer to Testing & Adjusting Section, UENR4065 for more detail on the following test.

Propulsion Module Lubrication Pressure - Test

Table 18

Status(1)	Description	Specification	Actual	Comments
	Engine speed	Low Idle
	Low Idle, Parking Brake Engaged(2)	28 ± 10 kPa (4 ± 1.5 psi)
	Low Idle, Parking Brake Released (3)	53 ± 10 kPa (7.5 ± 1.5 psi)
	Engine speed	1050 RPM
	High Idle, Parking Brake Released(3)	132 ± 15 kPa (19 ± 2 psi)
	Engine speed	High Idle
	High Idle, Parking Brake Engaged(2)	107 ± 15 kPa (15.5 ± 2 psi)

(1)	N = Normal, M = Monitor, A = Action
(2)	View the information on the monitoring system display.
(3)	View the information on the monitoring system display while the tracks are in motion.

Steering System

Reference: Refer to Testing & Adjusting Section, UENR4065 for more detail on the following test.

Piston pump (Steering Charge and Pilot Pressure) - Test and Adjust

Table 19

Status(1)	Description	Specification	Actual	Comments
	Engine speed	High Idle
	High Idle, (HPS) port	3100 ± 100 kPa (450 ± 14.5 psi)

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

Piston Pump (Steering) - Test and Adjust

Table 20

Status(1)	Description	Specification	Actual	Comments
	Engine speed	High Idle
	High Idle, no steering command, (HD) port	2850 ± 100 kPa (415 ± 15 psi)
	High Idle, no steering command, (HC) port	2850 ± 100 kPa (415 ± 15 psi)
	High Idle, MAX STEER RIGHT, (HD) port	39000 ± 1000 kPa (5655 ± 145 psi)
	High Idle, MAX STEER LEFT, (HC) port	39000 ± 1000 kPa (5655 ± 145 psi)
	Crossover Relief, bench test value	46000 ± 1000 kPa (6670 ± 145 psi)

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

Relief Valve (Ripper) - Test and Adjust

Table 21

Status(1)	Description	Specification	Actual	Comments
	Engine speed	High Idle
	Pump signal pressure while the ripper is stalled	23400 ± 500 kPa (3394 ± 73 psi)

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

Relief Valve (Main) - Test and Adjust

Table 22

Status(1)	Description	Specification	Actual	Comments
	Oil Temp	49° ± 3°C (120 ± 5° F)
	Cracking Pressure	28500 kPa (4134 psi)
	Flow rate	20.0 ± 2.0 L (5.3 ± 0.5 US gal)
	Pressure setting	31000 ± 500 kPa (4496 ± 73 psi)
	Torque	65 ± 5 N·m (48 ± 4 lb ft)

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

Accumulator (Pilot) - Test and Charge

Table 23

Status(1)	Description	Specification	Actual	Comments
	Engine speed	High idle
	Charge pump discharge pressure	3100 ± 100 kPa (450 ± 15 psi)

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

Braking System

Reference: Refer to Testing & Adjusting Section, UENR4065 for more detail on the following test.

Brake Pressure - Test and Adjust

Table 24

Status(1)	Description	Specification	Actual	Comments
	Engine speed	High Idle
	Parking Brake On (BTP) port	Less than 70 kPa (10 psi)
	Parking Brake Off, tracks moving, (BTP) port	Greater than 2500 kPa (365 psi)

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

S.O.S

Reference: Refer to Operation and Maintenance Manual, SEBU9127, "Maintenance Interval Schedule" for more detail on performing S.0.S samples.

Table 25

Status(1)	Description	Obtain	Comments
	Engine Oil Sample	Every 250 Service Hours
	Engine Coolant Sample (Level I)	Every 500 Service Hours
	Engine Coolant Sample (Level II)	Initial 500 Service Hours Every Year
	Hydraulic Oil Sample	Every 500 Service Hours
	Power Train Oil Sample	Every 500 Service Hours
	Right Final Drive Oil Sample	Every 500 Service Hours
	Left Final Drive Oil Sample	Every 500 Service Hours

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