426F2 Backhoe Loader TA2 Technical Inspection {0372, 1000, 7000, 7535, 753T, 7565} Caterpillar

426F2 Backhoe Loader TA2 Technical Inspection {0372, 1000, 7000, 7535, 753T, 7565}

Usage:

Backhoe Loader: 426 F2 (S/N: EJ21-UP; DJ41-UP; EJ41-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 the Service Information System (SIS).

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, KENR9209, "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
Description	Specification	Comments
Radiator Pressure Relief (Radiator Cap)⁽²⁾	103 - 131 kPa (15 - 19 psi)
Freezing Point of Engine Coolant	−36° C (−33° F)	.
Conditioner Test of Engine Coolant		245-5829 Coolant/Battery Tester Gp
Belt Tension		Refer to Testing and Adjusting Manual, KENR9209, " V-Belt - Test".
Difference between the Upper Radiator Tank Temperature and Lower Radiator Tank Temperature	5° ± 2°C (41° ± 3.60000°F)
Jacket Water Inlet Temperature from Cooling System	88° ± 2°C (190° ± 3.60000°F)

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

Fuel System

Refer to Testing and Adjusting Manual, KENR9209, " Fuel System Pressure - Test".

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Table 3
Status⁽¹⁾	Description	Specification	Actual	Comments
	Minimum Pressure	25 kPa (3.63 psi)
	Maximum Pressure	75 kPa (10.88 psi)

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

Lubrication System

Refer to Testing and Adjusting Manual, KENR9209, " Engine Oil Pressure - Test".

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Table 4
Status⁽¹⁾	Description	Specification	Actual	Comments
	Engine Oil Pressure at High Idle	315 ± 105 kPa (46 ± 15 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	950 ± 30 RPM
Engine Speed at High Idle	2350 ± 40 RPM
Torque Converter Stall Test Engine RPM	2014 - 2163 RPM
Torque Converter Stall Test Engine RPM	2014 - 2163 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, UENR5025, "Hydraulic and Steering System" for more detail on the following test.

Operational Checks

Drift Check for the Loader Cylinders, Backhoe Cylinders, and Stabilizer Cylinders

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Table 7
Status⁽¹⁾	Description	Specification	Actual	Comments
	Loader Lift Loader Tilt Loader MP	Less than 12 mm (0.5 inch) in 5.0 mins
	Loader Stabilizer	Less than 5 mm (0.2 inch) in 5.0 mins
	Loader Stabilizer	Less than 10 mm (0.4 inch) in 24 hours.
	Bucket Boom Stick	Less than 10 mm (0.4 inch) in 5.0 mins

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

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Table 8
Loader Cycle Times
Status⁽¹⁾	Description	Specification	Actual	Comments
	Loader Lower (Float)	3.5 Sec. Max
	Loader Raise (Ground to Stop) PL/IT	4.8 Sec. Max
	Loader Bucket Dump (IT)	3.9 Sec. Max
	Loader Bucket Rack (IT)	3.0 Sec. Max
	MP Bucket Open	2.0 Sec. Max
	MP Bucket Close	2.1 Sec. Max

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

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Table 9
Backhoe Cycle Times
Status⁽¹⁾	Description	Specification	Actual	Comments
	Boom Lower (Snubber to Ground)	3.5 Sec. Max
	Boom Raise (Ground to Snubber)	3.5 Sec. Max
	Bucket Dump	2.7 Sec. Max
	Bucket Curl	3.0 Sec. Max
	Stick IN	3.7 Sec. Max
	Stick OUT	3.6 Sec. Max
	Swing (Stop to Stop)	5.5 Sec. Max
	Stabilizer DOWN	5.0 Sec. Max
	Stabilizer UP	5.0 Sec. Max

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

Hydraulic and Steering System

Hydraulic Pump - Test and Adjust

Low-Pressure Standby Test

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Table 10
Status⁽¹⁾	Description	Specification	Actual	Comments
	Load Sense Pressure Test Port	100 kPa to 1200 (14.5 psi to 174 psi)
	Pump Discharge Pressure Test Port	1700 kPa to 3000 kPa (247 psi to 435 psi)

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

Pump Discharge Pressure Test

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Table 11
Status⁽¹⁾	Description	Specification	Actual	Comments
	Pump Discharge pressure	25150 ± 850 kPa (3648 ± 123 psi)

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

Margin Pressure Test

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Table 12
Status⁽¹⁾	Description	Specification	Actual	Comments
	Margin pressure	1500 kPa to 1900 kPa (218 psi to 276 psi)

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

Steering Stall Test

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Table 13
Status⁽¹⁾	Description	Specification	Actual	Comments
	Steering Stall	18300 ± 2000 kPa (2654 ± 290 psi)

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

Relief Valve (Line) - Test and Adjust

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Table 14
Line Relief Valve Pressure Settings
Status⁽¹⁾	Hydraulic Circuit	Specification	Actual	Comments
	Loader IT Dump Relief	18500 ± 1000 kPa (2683 ± 145 psi)
	Boom Down Relief	20500 ± 1500 kPa (2973 ± 218 psi)

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

Pilot System Pressure - Test

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Table 15
Status⁽¹⁾	Description	Specification	Actual	Comments
	Pilot System Pressure	3450 ± 30 kPa (500 ± 4.4 psi)

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

S.O.S

Reference: Refer to Operation and Maintenance Manual, SEBU9213, "Maintenance Interval Schedule" for more detail on performing S.0.S samples.

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Table 16
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