994F Wheel Loader TA2 Technical Inspection{0372, 1000, 7000, 753T, 7565} Caterpillar

994F Wheel Loader TA2 Technical Inspection{0372, 1000, 7000, 753T, 7565}

Usage:

994F 442

Wheel Loader:: 994F (S/N: 4421-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
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	18 VDC to 32 VDC		Refer to Special Instruction, REHS0354, "Charging System - Test".
	Electric Starting System Test	12 to 16 V at −23° C (−10° F) to −7° C (19° F)		Refer to Testing and Adjusting, RENR2211, "Electrical 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)

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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	Auto-tension
	Difference between the Upper and Lower Radiator Tank Temperatures	6° + 5° - 5° C (43° + 41°- 41° F)
	Jacket Water Inlet Temperature from Cooling System	89° + 3°- 3° C (192° + 37° - 37° 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

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Table 3
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Fuel System Pressure at HIGH IDLE	467 + 160 - 154 kPa (68 + 23 - 22 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Basic Engine

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Table 4
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Engine Speed at Low Idle	750 ± 10 rpm
	Engine Speed at High Idle	1700 ± 10 rpm

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^( 1 )

N = Normal, M = Monitor, A = Action

Lubrication System

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Table 5
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Engine Oil Pressure at LOW IDLE	349 + 251 - 145 kPa (51 + 36 - 21 psi)
	Engine Oil Pressure at HIGH IDLE	410 + 190 - 83 kPa (59 + 28 - 12 psi)

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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 Oil Temperature	74° to 105°C (165° to 221°F)
	Torque Converter Stall Speed	1605 rpm
	Boost Pressure	110.0 ± 11.0 kPa (16.0 ± 1.6 psi)
	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⁾
	Cylinder # 7 Exhaust Temperature ⁽²⁾
	Cylinder # 8 Exhaust Temperature ⁽²⁾

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

Hydraulic Performance Checks

ReferenceRefer to Testing & Adjusting, RENR6323, "Hydraulic System" for more detail on the following test.

Implement Cycle Time - Check

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Table 7
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Lift Raise Time	11 to 12 seconds ⁽²⁾
	Lift Raise Time	13 to 14 seconds ⁽³⁾
	Lift Lower Time	6 to 7 seconds ⁽²⁾
	Lift Lower Time	7 to 8 seconds ⁽³⁾
	Dump Time	3 to 4 seconds
	Tilt Back Time	5 to 7 seconds

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^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	For standard machine and high lift version.
^( 3 )	For super high lift version and extended high lift version.

Lift and Tilt Cylinder Drift - Check

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Table 8
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Maximum Implement Drift in 5.0 minutes ⁽²⁾ for Rod Movement of Lift Cylinder	20.0 mm (0.8 inch)
	Maximum Implement Drift in 2.7 minutes ⁽³⁾ for Rod Movement of Lift Cylinder	20.0 mm (0.8 inch)
	Maximum Implement Drift in 1.7 minutes ⁽⁴⁾ for Rod Movement of Lift Cylinder	20.0 mm (0.8 inch)
	Maximum Implement Drift in 5.0 minutes ⁽²⁾ for Rod Movement of Tilt Cylinder	25.0 mm (1.0 inch)
	Maximum Implement Drift in 2.7 minutes ⁽³⁾ for Rod Movement of Tilt Cylinder	25.0 mm (1.0 inch)
	Maximum Implement Drift in 1.7 minutes ⁽⁴⁾ for Rod Movement of Tilt Cylinder	25.0 mm (1.0 inch)

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^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	Oil temperature below 38° to 49°C (100° to 120°F).
^( 3 )	Oil temperature between 49° to 66°C (120° to 150°F).
^( 4 )	Oil temperature between above 66°C (150°F).

Brake Performance Checks

ReferenceRefer to Operation and Maintenance Manual, SEBU7885, "Braking System - Test" for more detail on the following test.

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Table 9
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Brake Accumulator - Test
	Service Brake Holding Ability Test
	Parking Brake Holding Ability Test

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^( 1 )

N = Normal, M = Monitor, A = Action

Steering Performance Checks

ReferenceRefer to Testing & Adjusting, RENR6325, "Steering System" for more detail on the following test.

Steering Time - Check and Adjust

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Table 10
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Left Steering Time for a Full Turn from Stop to Stop (HIGH IDLE)	4 to 5 seconds
	Right Steering Time for a Full Turn from Stop to Stop (HIGH IDLE)	4 to 5 seconds
	Difference between the steering time for a right turn and the steering time for a left turn	must not be more than 1 second

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^( 1 )

N = Normal, M = Monitor, A = Action

Hydraulic System

ReferenceRefer to Testing & Adjusting, RENR6323, "Hydraulic System" for more detail on the following test.

Torque Converter Stall and Implement Pump Double Stall - Test

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Table 11
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Torque Converter Stall and Implement Double Stall Speed in THIRD SPEED FORWARD	1305 ± 50 rpm

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^( 1 )

N = Normal, M = Monitor, A = Action

Relief Valve (Main) (Variable Displacement Pump) - Test and Adjust

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Table 12
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Main Relief Valve Pressure for Variable Displacement Pump	27580 ± 345 kPa (4000 ± 50 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Piston Pump Cutoff Pressure (Variable Displacement) - Test and Adjust

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Table 13
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Cutoff Valve Pressure	30000 ± 340 kPa (4350 ± 50 psi)
	Main Relief Valve Pressure	32800 kPa (4750 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Relief Valve Pressure (Pilot) - Test and Adjust

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Table 14
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Pilot Relief Valve Pressure at LOW IDLE	2400 ± 40 kPa (350 ± 6 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Selector and Pressure Control Valve (Dead Engine Lower) - Test and Adjust

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Table 15
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Selector and Pressure Control Valve (Dead Engine Lower)	1350 ± 100 kPa (195 ± 15 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Sequence Valve (Float) - Test and Adjust

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Table 16
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Float Sequence Valve Pressure	2000 ± 100 kPa (290 ± 14.5 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Pilot Modulation Pressure - Test and Adjust

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Table 17
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Pilot Modulation Pressure (Raise)	600 ± 70 kPa (87 ± 10 psi)
	Pilot Modulation Pressure (Lower)	700 ± 70 kPa (100 ± 10 psi)
	Pilot Modulation Pressure (Rack Back)	860 ± 70 kPa (125 ± 10 psi)
	Pilot Modulation Pressure (Dump)	600 ± 70 kPa (87 ± 10 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Relief Valve (Main) (Fixed Displacement Pump) - Test and Adjust

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Table 18
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Main Relief Valve Pressure for Fixed Displacement Pump	32800 ± 400 kPa (4750 ± 58 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Relief Valve (Line) - Test and Adjust

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Table 19
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Tilt Cylinder (Rod End)	24100 ± 700 kPa (3500 ± 100 psi)
	Tilt Cylinder (Head End)	38000 ± 700 kPa (5500 ± 100 psi)
	Tilt Cylinder (Head End)	41600 ± 700 kPa (6030 ± 100 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Power Train System

ReferenceRefer to Testing & Adjusting, RENR6306, "Power Train System" for more detail on the following tests.

Tire Pressure

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Table 20
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Front Left Tire Pressure			See Tire Manufacture Recommendations
	Front Right Tire Pressure			See Tire Manufacture Recommendations
	Rear Left Tire Pressure			See Tire Manufacture Recommendations
	Rear Right Tire Pressure			See Tire Manufacture Recommendations

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^( 1 )

N = Normal, M = Monitor, A = Action

Torque Converter Impeller Clutch Pressure - Test

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Table 21
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Impeller Clutch Pressure (Maximum) at HIGH IDLE	1965 ± 100 kPa (285 ± 15 psi)
	Impeller Clutch Pressure (Minimum) at HIGH IDLE	400 ± 100 kPa (58 ± 15 psi)
	Torque Converter Inlet Pressure at HIGH IDLE	900 kPa (130 psi) maximum pressure with cold oil
	Torque Converter Outlet Pressure at HIGH IDLE	470 ± 100 kPa (68 ± 14 psi) ⁽²⁾

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^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	These pressures are for a machine in third speed, with activated brakes, with installed axle shafts, and with the torque converter in a stall condition

Torque Converter Lockup Clutch Pressure - Test

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Table 22
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Lockup Clutch Pressure at HIGH IDLE	2205 ± 70 kPa (320 ± 10 psi) with an activated solenoid
	Lockup Clutch Pressure at HIGH IDLE	70 kPa (10 psi) ⁽²⁾

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^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	when the solenoid is not activated.

Torque Converter Stall - Test

This test is performed using the operator monitor. Refer to Testing and Adjusting, RENR6306, "Torque Converter Stall - Test" for further instruction.

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Table 23
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Torque Converter Stall Speed	1605 RPM

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^( 1 )

N = Normal, M = Monitor, A = Action

Transmission Pressures - Test and Adjust

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Table 24
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Speed Clutch Pressure P1 at LOW IDLE	2200 kPa (320 psi) minimum
	Speed Clutch Pressure P1 at HIGH IDLE	2550 ± 140 kPa (370 ± 20 psi) when the direction switch is in FORWARD or in REVERSE and any speed is selected
	Direction Clutch P2 Pressure at LOW IDLE	1750 kPa (250 psi) minimum
	Direction Clutch P2 Pressure at HIGH IDLE	2170 ± 175 kPa (315 ± 25 psi)
	Transmission Lubrication Oil Pressure at LOW IDLE	7 kPa (1 psi) minimum
	Transmission Lubrication Oil Pressure at HIGH IDLE	140 kPa (20 psi) minimum

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^( 1 )

N = Normal, M = Monitor, A = Action

Steering System

ReferenceRefer to Testing & Adjusting, RENR6325, "Steering System" for more detail on the following tests.

Steering System Pressure (High Pressure Stall) - Test and Adjust

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Table 25
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Steering Pump Output at HIGH IDLE	29000 kPa (4200 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Piston Pump (Steering) Margin Pressure - Test and Adjust

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Table 26
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Piston Pump (Steering) Margin Pressure at HIGH IDLE ⁽²⁾	2100 ± 100 kPa (305 ± 15 psi)

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^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	If you are using tetragauges, the steering pump pressure should be 2400 ± 100 kPa (348 ± 15 psi) higher than the pressure in the load sensing line. This is the margin pressure. These pressures must be read during the articulation of the machine.

Steering System Pressures - Test and Adjust

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Table 27
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Steering Pilot Valve Pressure (When Steering and Transmission Integrated Control System (STIC) is moved to full left or full right)	3900 ± 400 kPa (565 ± 60 psi)
	Steering Pilot Valve Supply Pressure	3900 ± 400 kPa (565 ± 60 psi)
	Margin Pressure	2100 kPa (305 psi)
	Steering Pilot Valve Supply Pressure	3900 ± 400 kPa (565 ± 60 psi)
	Signal Pressure (When STIC is moved to full left or full right)	26900 kPa (3900 psi)
	Steering Cylinder Crossover Relief Valve Pressure	34500 kPa (5000 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Steering Main System Relief Pressure - Test and Adjust

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Table 28
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Steering System Pressure	29000 kPa (4200 psi)
	Steering Relief Valve Pressure	31000 kPa (4500 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Relief Valve (Secondary Steering) - Test and Adjust

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Table 29
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Secondary Steering Relief Valve Pressure	20950 ± 345 kPa (3050 ± 50 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Steering Neutralizer Valve - Check and Adjust

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Table 30
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Pressed Putty Thickness	3 to 5 mm (0.1 to 0.2 inch)

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^( 1 )

N = Normal, M = Monitor, A = Action

Brake and Hydraulic Fan System

ReferenceRefer to Testing & Adjusting, RENR6326, "Braking System" for more detail on the following tests.

Piston Pump (Brake) Pressure - Test and Adjust

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Table 31
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Piston Pump Oil Pressure	16000 ± 345 kPa (2300 ± 50 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Brake Valve (Service Brake) - Test

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Table 32
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Service Brake Pressure	10350 ± 350 kPa (1500 ± 50 psi)

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^( 1 )

N = Normal, M = Monitor, A = Action

Brake Accumulator - Test and Charge

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Table 33
Accumulator Precharge Pressure/Temperature Relationship for the 5500 kPa (800 psi) Service Brake Accumulators
Temperature	Pressure
−7°C (20°F)	5000 kPa (726 psi)
−1°C (30°F)	5105 kPa (741 psi)
4°C (40°F)	5235 kPa (760 psi)
10°C (50°F)	5340 kPa (775 psi)
16°C (60°F)	5420 kPa (787 psi)
21°C (70°F)	5500 kPa (798 psi)
27°C (80°F)	5605 kPa (813 psi)
32°C (90°F)	5735 kPa (832 psi)
38°C (100°F)	5840 kPa (848 psi)
43°C (110°F)	5920 kPa (859 psi)
49°C (120°F)	6000 kPa (871 psi)

S·O·S Samples

ReferenceRefer to Operation and Maintenance Manual, SEBU7885, "Maintenance Interval Schedule" for more detail on performing S.O.S samples.

Engine Oil Sample

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Table 34
Status ⁽¹⁾	Description	Obtain	Comments
	Engine Oil Sample

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^( 1 )

N = Normal, M = Monitor, A = Action

Engine Coolant Sample

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Table 35
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 36
Status ⁽¹⁾	Description	Obtain	Comments
	Hydraulic Oil Sample

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^( 1 )

N = Normal, M = Monitor, A = Action

Differential & Final Drive Oil Samples (Inboard Final Drives)

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Table 37
Status ⁽¹⁾	Description	Obtain	Comments
	Front Differential & Final Drive Oil Sample
	Rear Differential & Final Drive Oil Sample

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^( 1 )

N = Normal, M = Monitor, A = Action

Differential & Final Drive Oil Samples (Outboard Final Drives)

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Table 38
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