924K, 930K and 938K Wheel Loader TA2 Technical Inspection{0372, 1000, 7000, 753T, 7565} Caterpillar

924K, 930K and 938K Wheel Loader TA2 Technical Inspection{0372, 1000, 7000, 753T, 7565}

Usage:

930K DYB

Wheel Loader:: 924K (S/N: ENC1-UP; HJF1-UP; PWR1-UP); 930K (S/N: DYB1-UP; EYE1-UP; RHN1-UP; TNY1-UP; T681-UP); 938K (S/N: SWL1-UP; XXT1-UP; HFW1-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

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Electrical System

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Table 1
Description	Specification	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).	Refer to Operation and Maintenance Manual, SEBU8720, "Battery or Battery Cable - Inspect/Replace"
Battery Test	12.4 VDC or more	Refer to Special Instruction, SEHS7633, "Battery Test Procedure".
Charging System Test		Refer to Testing and Adjusting, UENR3387, "Charging System - Test" Refer to Special Instruction, REHS0354, "Charging System Troubleshooting"
Electric Starting System Test		Refer to Testing and Adjusting, UENR3387, "Electric Starting System - Test"

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N = Normal, M = Monitor, A = Action

Engine

Cooling System

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Table 2
Description	Specification	Comments
Radiator Pressure Relief (Radiator Cap) ⁽²⁾	41 to 55 kPa (6 to 8 psi)	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	1068 ± 111 N (240 ± 25 lb) for new belts. 890 ± 44 N (200 ± 10 lb) for used belts.	Auto Adjust Belt Tensioner
Difference between the Upper and Lower Radiator Tank Temperatures

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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
	Maximum Fuel Pressure of the High Pressure Fuel System	200 MPa (29000 psi)

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N = Normal, M = Monitor, A = Action

Lubrication System

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Table 4
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Minimum Oil Pressure at the Maximum Engine Speed and at Normal Operating Temperature	315 kPa (45 psi)

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N = Normal, M = Monitor, A = Action

Basic Engine

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Table 5
Description	Specification	Comments
Engine Speed at Low Idle	800 RPM
Engine Speed at High Idle	1800 RPM
Cylinder Cutout Test		Caterpillar^® Electronic Technician (Cat ET) Service Tool

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N = Normal, M = Monitor, A = Action

Hydraulic Performance Checks

ReferenceRefer to Testing & Adjusting, UENR0279 for more detail on the following tests.

Implement Cycle Time-Check (No Load - High Idle)

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Table 6
Status ⁽¹⁾	Description	Specification	Actual	Comments
	924K Raise	6.0 +/- 0.3 sec
	924K Lower	3.3 +/- 0.5 sec
	924K Float	2.8 +/- 0.5 sec
	924K Rack Back	3.0 +/- 0.3 sec
	924K Dump	2.0 +/- 0.3 sec
	930K Raise	5.5 +/- 0.3 sec
	930K Lower	3.3 +/- 0.5 sec
	930K Float	2.8 +/- 0.5 sec
	930K Rack Back	3.0 +/- 0.3 sec
	930K Dump	2.0 +/- 0.3 sec
	938K Raise	6.0 +/- 0.3 sec
	938K Lower	3.3 +/- 0.5 sec
	938K Float	2.8 +/- 0.5 sec
	938K Rack Back	3.0 +/- 0.3 sec
	938K Dump	2.0 +/- 0.3 sec

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N = Normal, M = Monitor, A = Action

Lift and Tilt Cylinder Drift - Check

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Table 7
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Oil Temperature	60° C (140° F)
	Lift Cylinder	10 mm (0.40 inch) Max in 10 Minutes
	Tilt Cylinder	10 mm (0.40 inch) Max in 10 Minutes

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N = Normal, M = Monitor, A = Action

Brake Performance Checks

ReferenceRefer to Operation and Maintenance Manual, SEBU8720, "Braking System - Test" for more detail on the following tests.

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Table 8
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Service Brake Holding Ability Test- Test (Test from OMM)	No Movement
	Parking Brake Holding Ability Test- Test (Test from OMM)	No Movement

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N = Normal, M = Monitor, A = Action

Steering Performance Checks

ReferenceRefer to Testing & Adjusting, UENR0279, "Steering Time - Check" for more detail on the following test.

Steering Time - Check

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Table 9
Status ⁽¹⁾	Description	Specification	Actual	Comments
	924K and 930K Left / Right Steering Time	2.3± 0.3 seconds
	938K Left / Right Steering Time	2.4± 0.3 seconds

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N = Normal, M = Monitor, A = Action

Hydraulic System

ReferenceRefer to Testing & Adjusting, UENR0279 for more detail on the following tests.

Implement Piston Pump Low Pressure Standby

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Table 10
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Implement Pump Low Pressure Standby	2500 ± 300 kPa (363 ± 44 psi)

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N = Normal, M = Monitor, A = Action

Implement Piston Pump Discharge Pressure

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Table 11
Status ⁽¹⁾	Description	Specification	Actual	Comments
	924K Implement Pump Discharge Pressure (at Main Control Valve) ⁽¹⁾	26000 ± 500 kPa (3771 ± 73 psi)
	924K Implement Pump Discharge Pressure (at Compensator Valve) ⁽¹⁾	23900 ± 500 kPa (3466 ± 73 psi)
	930K Implement Pump Discharge Pressure (at Main Control Valve) ⁽¹⁾	25000 ± 500 kPa (3626 ± 73 psi)
	930K Implement Pump Discharge Pressure (at Compensator Valve) ⁽¹⁾	22900 ± 500 kPa (3321 ± 73 psi)
	938K Implement Pump Discharge Pressure (at Main Control Valve) ⁽¹⁾	28000 ± 500 kPa (4061 ± 73 psi)
	938K Implement Pump Discharge Pressure (at Compensator Valve) ⁽¹⁾	25900 ± 500 kPa (3757 ± 73 psi)

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^( 1 )	N = Normal, M = Monitor, A = Action
^( 1 )	Recorded at HIGH IDLE

Implement Piston Pump High Pressure Cutoff

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Table 12
Status ⁽¹⁾	Description	Specification	Actual	Comments
	924K Implement Pump High Pressure Cutoff	27500 ± 350 kPa (3989 ± 51 psi)
	930K Implement Pump High Pressure Cutoff	26500 ± 350 kPa (3844 ± 51 psi)
	938K Implement Pump High Pressure Cutoff	29500 ± 350 kPa (4279 ± 51 psi)

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N = Normal, M = Monitor, A = Action

Implement Piston Pump Margin Pressure

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Table 13
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Implement Piston Pump Margin Pressure	2100 ± 200 kPa (305 ± 30 psi)

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N = Normal, M = Monitor, A = Action

Pilot Pressure to the Main Control Valve

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Table 14
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Pilot Pressure to the Main Control Valve	3150 ± 350 kPa (457 ± 51 psi)

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N = Normal, M = Monitor, A = Action

Load Sensing Signal Relief Valve - Test and Adjust

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Table 15
Status ⁽¹⁾	Description	Specification	Actual	Comments
	924K Load Sensing Signal Relief Valve - Test and Adjust (at Implement Valve) ⁽¹⁾	26000 ± 500 kPa (3771 ± 73 psi)
	924K Load Sensing Signal Relief Valve - Test and Adjust (at Pump Control Test Port) ⁽¹⁾	23900 ± 500 kPa (3466 ± 73 psi)
	930K Load Sensing Signal Relief Valve - Test and Adjust (at Implement Valve) ⁽¹⁾	25000 ± 500 kPa (3626 ± 73 psi)
	930K Load Sensing Signal Relief Valve - Test and Adjust (at Pump Control Test Port) ⁽¹⁾	22900 ± 500 kPa (3321 ± 73 psi)
	938K Load Sensing Signal Relief Valve - Test and Adjust (at Implement Valve) ⁽¹⁾	28000 ± 500 kPa (4061 ± 73 psi)
	938K Load Sensing Signal Relief Valve - Test and Adjust (at Pump Control Test Port) ⁽¹⁾	25900 ± 500 kPa (3757 ± 73 psi)

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^( 1 )	N = Normal, M = Monitor, A = Action
^( 1 )	Recorded at HIGH IDLE

Pilot Oil Accumulator - Test

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Table 16
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Oil Temperature	21° C (70° F)
	Accumulator Precharge	690 ± 69 kPa (100 ± 10 psi)

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N = Normal, M = Monitor, A = Action

Ride Control Accumulator - Test

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Table 17
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Oil Temperature	21° C (70° F)
	924K Accumulator PrechargeLow Pressure Setting	1930 ± 97 kPa (280 ± 14 psi)
	924K Accumulator Precharge High Pressure Setting	5377 ± 268 kPa (780 ± 39 psi)
	930K and 938K Accumulator Precharge Low Pressure Setting	2413 ± 120 kPa (350 ± 18 psi)
	930K and 938K Accumulator Precharge High Pressure Setting	5792 ± 290 kPa (840 ± 42 psi)

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N = Normal, M = Monitor, A = Action

Pressure Reducing Valve - Test (Quick Coupler)

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Table 18
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Fusion Coupler	10000 ± 500 kPa (1450 ± 75 psi)
	ISO (Wide) Coupler	24500 ± 500 kPa (3550 ± 75 psi)

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N = Normal, M = Monitor, A = Action

Power Train System

ReferenceRefer to Testing & Adjusting, UENR0279 for more detail on the following tests.

Tire Pressure

The tire inflation pressure for machines that are shipped from the factory is suitable for shipping only. Always obtain the proper tire inflation pressures for your machine from the tire supplier before placing the machine into operation. The recommended tire inflation pressures for the front tires and for the rear tires will vary for each application.

Proper tire inflation pressure and maintenance of the tire inflation pressure is critical for optimum tire life. The tire inflation pressure should always be obtained from the tire supplier due to changes in the technology of tires, equipment, and job applications.

ReferenceRefer to the latest edition of Special Publication, "Caterpillar Performance Handbook" for general information on tire inflation pressure.

Transmission Pressures

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Table 19
Hydrostatic Transmission (Gearbox) Pressure
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Main Relief	2200 ± 140 kPa (320 ± 20 psi)
	Clutch	2100 ± 140 kPa (305 ± 20 psi)
	Lube	160 ± 110 kPa (23 ± 16 psi)

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N = Normal, M = Monitor, A = Action

Hydrostatic System - Test

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Table 20
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Drive Pump Crossover Relief Pressure	46500 ± 1500 kPa (6744 ± 218 psi)
	Drive Pump Pressure Override Pressure	44000 ± 1500 kPa (6382 ± 218 psi)
	Hydraulic Null Pressure	400 kPa (58 psi)

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N = Normal, M = Monitor, A = Action

Hydrostatic Charge Pressure - Check

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Table 21
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Hydrostatic Charge Pressure	3150 ± 350 kPa (457 ± 51 psi)

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N = Normal, M = Monitor, A = Action

Hydrostatic Charge Accumulator - Test

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Table 22
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Accumulator Precharge Pressure	2150 ± 110 kPa (312 ± 16 psi)

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N = Normal, M = Monitor, A = Action

Steering System

ReferenceRefer to Testing & Adjusting, UENR0279 for more detail on the following tests.

Piston Pump (Steering) High Pressure Stall - Test

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Table 23
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Piston Pump (Steering) High Pressure Stall - Test	24100 ± 700 kPa (3495 ± 100 psi)

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N = Normal, M = Monitor, A = Action

Piston Pump (Steering) Margin Pressure - Test

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Table 24
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Margin Pressure	2300 ± 200 kPa (334 ± 29 psi)

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N = Normal, M = Monitor, A = Action

Steering Pilot System Pressure - Check (Low Pressure Standby)

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Table 25
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Steering Pilot System Pressure-Check	2700 ± 300 kPa (392 ± 44 psi)

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N = Normal, M = Monitor, A = Action

Brake and Hydraulic Fan System

ReferenceRefer to Testing & Adjusting, UENR0279 for more detail on the following tests.

Brake Accumulator Precharge Pressure

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Table 26
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Brake Accumulator Precharge Pressure	5515 ± 275 kPa (800 ± 40 psi)
	Cut-in Pressure	11700 ± 900 kPa (1700 ± 130 psi)
	Cutout Pressure	17200 ± 900 kPa (2500 ± 130 psi)

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N = Normal, M = Monitor, A = Action

Service Brake System Pressure - Test

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Table 27
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Front Service Brake Pressure (Brake ON)	5688 ± 345 kPa (825 ± 50 psi)
	Rear Service Brake Pressure (Brake ON)	5688 ± 345 kPa (825 ± 50 psi)

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N = Normal, M = Monitor, A = Action

Service Brake Wear

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Table 28
Status ⁽¹⁾	Description	Specification	Actual	Comments
	924K and 930K Minimum Groove Depth (Front)	0.32 mm (0.013 inch)
	924K and 930K Minimum Groove Depth (Rear)	0.32 mm (0.013 inch)
	938K Wear Measurement	4 mm (0.16 inch) Minimum

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N = Normal, M = Monitor, A = Action

Hydraulic Fan Speed

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Table 29
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Minimum Fan Speed	700 +/- 50 rpm
	924K and 930K Max Fan Speed	1500 +/- 25 rpm
	938K Max Fan Speed	1550 +/- 25 rpm

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N = Normal, M = Monitor, A = Action

S·O·S Samples

ReferenceRefer to Operation and Maintenance Manual, UENR3110, "Maintenance Interval Schedule" for more detail on performing S.0.S samples.

Engine Oil Sample

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Table 30
Status ⁽¹⁾	Description	Obtain	Comments
	Engine Oil Sample

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N = Normal, M = Monitor, A = Action

Engine Coolant Sample

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Table 31
Status ⁽¹⁾	Description	Obtain	Comments
	Engine Coolant Sample

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^( 1 )

N = Normal, M = Monitor, A = Action

Hydraulic Oil Sample

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Table 32
Status ⁽¹⁾	Description	Obtain	Comments
	Hydraulic Oil Sample

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N = Normal, M = Monitor, A = Action

Differential & Final Drive Oil Samples (Inboard Final Drives)

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Table 33
Status ⁽¹⁾	Description	Obtain	Comments
	Front Differential & Final Drive Oil Sample
	Rear Differential & Final Drive Oil Sample

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N = Normal, M = Monitor, A = Action

Differential & Final Drive Oil Samples (Outboard Final Drives)

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Table 34
Status ⁽¹⁾	Description	Obtain	Comments
	Front Differential Oil Sample
	Rear Differential Oil Sample
	Left Front Final Drive Oil Sample
	Right Front Final Drive Oil Sample
	Left Rear Final Drive Oil Sample
	Right Rear Final Drive Oil Sample