422E and 428E Backhoe Loader TA2 Technical Inspection{0372, 1000, 7000, 753T, 7565} Caterpillar

422E and 428E Backhoe Loader TA2 Technical Inspection{0372, 1000, 7000, 753T, 7565}

Usage:

422E HBE

Backhoe Loader:: 422E (S/N: HBE1-UP); 428E (S/N: SNL1-UP)

Introduction

Inspections are the most basic form of condition monitoring. Inspections 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 effectively 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 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	14 ± 1 VDC		Refer to Special Instruction, REHS0354, "Charging System - Test".
	Electric Starting System Test	6 to 8 V at −23° C (−10° F) to −7° C (19° F)		Refer to Testing and Adjusting, RENR2415, "Electrical Starting System - Test".
		7 to 9 V at −7° C (19° F) to 10° C (50° F)
		8 to 10 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
	Belt Tension			Refer to Operation and Maintenance Manual.
	Difference between the Upper Radiator Tank Temperature and Lower Radiator Tank Temperature
	Jacket Water Inlet Temperature from Cooling System

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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 at LOW IDLE	25 kPa (3.63 psi)
	Maximum Pressure at HIGH IDLE	25 kPa (3.63 psi)

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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	280 kPa (40 psi)
	Engine Oil Pressure at High Idle	-

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^( 1 )

N = Normal, M = Monitor, A = Action

Basic Engine

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Table 5
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Engine Speed at Low Idle
	Engine Speed at High Idle
	Torque Converter Stall Test Engine RPM
	Torque Converter Stall Test Engine 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
	Torque Converter Stall Test Boost Pressure
	Cylinder # 1 Exhaust Temperature ⁽²⁾
	Cylinder # 2 Exhaust Temperature ⁽²⁾
	Cylinder # 3 Exhaust Temperature ⁽²⁾
	Cylinder # 4 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

Refer to Testing & Adjusting, RENR6479, "Hydraulic and Steering System" for more detail on the following test.

Operational Checks

Maximum Implement Drift

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Table 7
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Maximum Implement Drift for Loader Lift Cylinder within 5 minutes	12 mm (0.5 inch)
	Maximum Implement Drift for Loader Tilt Cylinder within 5 minutes	12 mm (0.5 inch)
	Maximum Implement Drift for Loader Bucket Cylinder within 5 minutes	12 mm (0.5 inch)
	Maximum Implement Drift for Stabilizer Cylinder within 5 minutes	5 mm (0.2 inch)
	Maximum Implement Drift for Backhoe Boom Cylinder within 5 minutes	10 mm (0.4 inch)
	Maximum Implement Drift for Backhoe Stick Cylinder within 5 minutes	10 mm (0.4 inch)
	Maximum Implement Drift for Backhoe Extendable Stick Cylinder within 5 minutes	10 mm (0.4 inch)
	Maximum Implement Drift for Backhoe Bucket Cylinder within 5 minutes	10 mm (0.4 inch)

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^( 1 )

N = Normal, M = Monitor, A = Action

Maximum Cycle Time

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Table 8
Status ⁽¹⁾	Description		Specification		Actual	Comments
Status ⁽¹⁾	Description		422E S/N:HBE1-UP	422E S/N:SNL1-UP	Actual	Comments
	Maximum Time for Loader Circuit (Time in seconds)
		Lower	2.8	3.2
		Raise (Ground to Stop) Single Tilt	4.5	N/A
		Bucket Dump Single Tilt	2.0	N/A
		Bucket Rack Back Single Tilt	2.8	N/A
		Bucket Open	2.0	2.0
		Bucket Close	2.1	2.1
		Raise (Ground to Stop) Integrated Toolcarrier Parallel Lift	N/A	5.5
		Bucket Dump Integrated Toolcarrier	N/A	3.5
		Bucket Rack Back Integrated Toolcarrier	N/A	2.5
	Maximum Cycle Time for Backhoe Circuit (Time in seconds)
		Boom Lower	2.8	3.4
		Boom Raise Ground to Snubber	3.0	3.0
		Bucket Dump	2.0	2.0
		Bucket Curl	2.8	2.8
		Stick In	3.3	3.3
		Stick Out	2.8	2.8
		Swing Stop to Snubber	3.5	3.5
		Extendable Stick Extending	2.8	2.8
		Extendable Stick Retracting	2.8	2.8

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^( 1 )

N = Normal, M = Monitor, A = Action

Hydraulic and Steering System

Refer to Testing & Adjusting, RENR6479, "Hydraulic and Steering System" for more detail on the following test.

Hydraulic Pump - Test and Adjust

Low Pressure Standby Test

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Table 9
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Standby Signal Pressure at Engine Speed of 1200 rpm	500 to 1600 kPa (70 to 230 psi)
	Low Standby Discharge Pressure at Engine Speed of 1200 rpm	2000 to 3700 kPa (290 to 540 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Margin Pressure Test

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Table 10
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Margin pressure at Engine Speed of 1200 rpm	2150 to 2450 kPa (312 to 355 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

High Pressure Stall Test

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Table 11
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Pressure for Loader Circuit at Engine Speed of 1200 rpm	19700 to 21700 kPa (2860 to 3150 psi) ⁽²⁾
	Pressure for Loader Circuit at Engine Speed of 1200 rpm	21800 to 23800 kPa (3160 to 3450 psi) ⁽³⁾
	Pressure for Backhoe Circuit at Engine Speed of 1200 rpm	21800 to 23800 kPa (3160 to 3450 psi)

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^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	For 422E S/N:HBE1-UP
^( 3 )	For 428E S/N:SNL1-UP

Relief Valve (Steering) - Test and Adjust

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Table 12
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Steering Relief Valve Pressure at Engine Speed of 1200 rpm	16800 to 19700 kPa (2440 to 2860 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Ride Control Accumulator - Test and Charge

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Table 13
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Ride Control Accumulator Pressure	1860 ± 34.5 kPa (270 ± 5.0 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

S.O.S

ReferenceRefer to Operation and Maintenance Manual, SEBU7970, "Maintenance Interval Schedule" for more detail on performing S.0.S samples.

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Table 14
Status ⁽¹⁾	Description	Obtain		Comments
	Engine Oil Sample
	Engine Coolant Sample (Level II)
	Hydraulic Oil Sample
	Transmission Oil Sample
	Front Right Final Drive Oil Sample
	Front Left Final Drive Oil Sample
	Rear Right Final Drive Oil Sample
	Rear Left Final Drive Oil Sample
	Front Axle/Diff Oil Sample
	Center Axle/Diff Oil Sample
	Rear Axle/Diff Oil Sample
	Transfer Case Oil Sample
	Brake Fluid Oil Sample
	Power Steering Oil Sample