966M and 972M Wheel Loader TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565} Caterpillar

Wheel Loader

966M (S/N: MD71-UP; EJA1-UP; DYC1-UP; LMM1-UP; KJP1-UP; GMS1-UP)

972M (S/N: A781-UP; LSJ1-UP; GGN1-UP; WGN1-UP; A8P1-UP; JPR1-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.

1. Click format to print.

2. Save the document as an HTML format.

3. Open the document with Microsoft Word.

Electrical System

Table 1

Status(1)	Description	Specification	Actual	Comments
	Inspect Battery Cables
	Battery Test			Refer to Special Instruction, SEHS7633, "Battery Test Procedure".
	Charging System Test
	Electric Starting System Test

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

Engine

Cooling System

Table 2

Status(1)	Description	Specification	Actual	Comments
	Radiator Pressure Relief (Radiator Cap)(2)	-
	Freezing Point of Engine Coolant	-
	Conditioner Test of Engine Coolant	-

(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
	Fuel Pressure at Full Load Speed	772 ± 180 kPa (112 ± 26 psi)

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

Lubrication System

Table 4

Status(1)	Description	Specification	Actual	Comments
	Engine Oil Pressure at Low Idle	103 to 172 kPa (15 to 25 psi)
	Engine Oil Pressure at Full Load Speed	248 to 359 kPa (36 to 52 psi)

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

Basic Engine

Table 5

Status(1)	Description	Specification	Actual	Comments
	Engine Speed at Low Idle	800 ± 10 rpm
	Engine Speed at High Idle	2275 ± 10 rpm
	Torque Converter Stall Test Engine RPM	1200 ± 10 rpm
	Cylinder Cutout Test	-

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

Air Inlet and Exhaust System

Table 6

Status(1)	Description	Specification	Actual	Comments
	Torque Converter Stall Test Boost Pressure	223 ± 20 kPa (32 ± 3 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)	-

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

Hydraulic Performance Checks

Reference: Refer to Testing & Adjusting, UENR0376, "Hydraulic System" for more detail on the following test.

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

Table 7

Status(1)	Description	Specification	Actual	Comments
	Lift Raise	6.0 ± 0.5
	Lift Lower	4.0 ± 0.5
	Float	2.5 ± 0.5

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

Lift and Tilt Cylinder Drift - Check

Table 8

Status(1)	Description	Specification	Actual	Comments
	Lift Cylinder	13 mm (0.5 inch)
	Tilt Cylinder	18.5 mm (0.7 inch)

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

Brake Performance Checks

Reference: Refer to Operation Maintenance Manual, SEBU9053, "Brake System" for more detail on the following test.

Table 9

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

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

Steering Performance Checks

Reference: Refer to Testing & Adjusting, UENR0376, "Steering System" for more detail on the following test.

Steering Time - Check

Table 10

Status(1)	Description	Specification	Actual	Comments
	Left Steering Time (High Idle)	4.5 ± 0.3 seconds
	Right Steering Time (High Idle)	4.5 ± 0.3 seconds
	Left Steering Time (Low Idle)	5.2 ± 0.3 seconds
	Right Steering Time (Low Idle)	5.2 ± 0.3 seconds
	Left/Right Time Difference (Max)	7%

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

Hydraulic System

Reference: Refer to Testing & Adjusting, UENR0376, "Hydraulic System" for more detail on the following test.

Implement Piston Pump Discharge Pressure

Table 11

Status(1)	Description	Specification	Actual	Comments
	Implement Pump Discharge Pressure	31000 ± 700 kPa (4496 ± 102 psi)

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

Implement Piston Pump Margin Pressure (Float)

Table 12

Status(1)	Description	Specification	Actual	Comments
	Implement Piston Pump Margin Pressure (Float)	2100 ± 100 kPa (305 ± 15 psi)

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

Pilot Pressure to the Main Control Valve

Table 13

Status(1)	Description	Specification	Actual	Comments
	Pilot Pressure to the Main Control Valve	3100 ± 300 kPa (450 ± 44 psi)

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

Load Sensing Signal Relief Valve - Test and Adjust

Table 14

Status(1)	Description	Specification	Actual	Comments
	Load Sensing Signal Relief Valve - Test and Adjust	28900 ± 700 kPa (4192 ± 102 psi)

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

Pilot Oil Accumulator - Test

Table 15

Status(1)	Description	Specification	Actual	Comments
	Accumulator Precharge	1000 ± 50 kPa (145 ± 7 psi)

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

Ride Control Accumulator - Test

Table 16

Status(1)	Description	Specification	Actual	Comments
	Accumulator Precharge High Pressure	7500 kPa (1088 psi)
	Accumulator Precharge Low Pressure	3000 kPa (435 psi)

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

Power Train System

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.

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

Table 17

Status(1)	Description	Specification	Actual	Comments
	Front Left Tire Pressure
	Front Right Tire Pressure
	Rear Left Tire Pressure
	Rear Right Tire Pressure

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

Oil at Normal Operating Temperature

Table 18

Oil at Normal Operating Temperature
Transmission Oil	Torque Converter Oil
83° ± 7°C (181° ± 12°F)	93° ± 17°C (199° ± 30°F)

Transmission Pressure

Table 19

Transmission Pressures for the 966M and 972M Wheel Loaders
Pressure Tap Number	Description	Specification
		966M	972M
(10) - (1)	(ΔP) Pump - Clutch 1	0 ± 100 kPa (0 ± 14.5 psi)	0 ± 100 kPa (0 ± 14.5 psi)
(10) - (2)	(ΔP) Pump - Clutch 2	0 ± 100 kPa (0 ± 14.5 psi)	0 ± 100 kPa (0 ± 14.5 psi)
(10) - (3)	(ΔP) Pump - Clutch 3	0 ± 100 kPa (0 ± 14.5 psi)	0 ± 100 kPa (0 ± 14.5 psi)
(10) - (4)	(ΔP) Pump - Clutch 4	0 ± 100 kPa (0 ± 14.5 psi)	0 ± 100 kPa (0 ± 14.5 psi)
(10) - (5)	(ΔP) Pump - Clutch 5	0 + 100 kPa (0 + 14.5 psi) - 250 kPa (- 36 psi)	0 + 100 kPa (0 + 14.5 psi) - 250 kPa (- 36 psi)
(5)	Clutch Gauge 5	2650 ± 350 kPa (384 ± 51 psi)	2650 ± 350 kPa (384 ± 51 psi)
(10) - (6)	(ΔP) Pump - Clutch 6	0 ± 100 kPa (0 ± 14.5 psi)	0 ± 100 kPa (0 ± 14.5 psi)
(7)	Torque Converter Inlet HIGH IDLE Neutral	760 ± 150 kPa (110 ± 22 psi)	760 ± 150 kPa (110 ± 22 psi)
(8)	Torque Converter Outlet HIGH IDLE Neutral	490 ± 150 kPa (71 ± 22 psi)	650 ± 150 kPa (94 ± 22 psi)
(9)	Transmission Lubrication HIGH IDLE Neutral	202.5 ± 97.5 kPa (29 ± 14 psi)	350 ± 150 kPa (51 ± 22 psi)
(10)	Transmission Pump Test Point 1 - Test Point 2 - Test Point 3 - Test Point 4	3450 kPa - 3000 kPa (500 psi - 435 psi) 2825 kPa - 2275 kPa (409 psi - 329 psi) 2050 kPa - 1200 kPa (297 psi - 174 psi) 1375 kPa - 975 kPa (200 psi - 141 psi)	3450 kPa - 3000 kPa (500 psi - 435 psi) 2825 kPa - 2275 kPa (409 psi - 329 psi) 2050 kPa - 1200 kPa (297 psi - 174 psi) 1375 kPa - 975 kPa (200 psi - 141 psi)
(11)	Lock up clutch pressure	2450 ± 150 kPa (355 ± 22 psi)	2450 ± 150 kPa (355 ± 22 psi)

Stall Speed

Table 20

Stall Speed
Stall speed for the 966M		Stall speed for the 972M
Unlimited 2045 +/- 30 rpm		Unlimited 2075 +/- 30 rpm
Performance 2045 +/ - 30 rpm		Performance 1990 +/- 65 rpm
Economy 1970 +/- 65 rpm		Economy 2000 +/- 65 rpm

Double Stall Speed

Table 21

Double Stall Speed
Stall speed for the 966M		Stall speed for the 972M
Performance 1445 +/- 100 rpm		Performance 1497 +/- 100 rpm
Economy 1393 +/- 100 rpm		Economy 1440 +/- 100 rpm

Steering System

Reference: Refer to Testing & Adjusting, UENR0376, "Steering System" for more detail on the following test.

Piston Pump (Steering) High Pressure Stall - Test

Table 22

Status(1)	Description	Specification	Actual	Comments
	Piston Pump (Steering) High Pressure Stall - Test	23400 ± 700 kPa (3395 ± 102 psi)

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

Piston Pump (Steering) Margin Pressure - Test

Table 23

Status(1)	Description	Specification	Actual	Comments
	Margin Pressure	2100 ± 100 kPa (305 ± 15 psi)

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

Steering Pilot System Pressure - Check

Table 24

Status(1)	Description	Specification	Actual	Comments
	Steering Pilot System Pressure-Check	3500 ± 345 kPa (500 ± 50 psi)

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

Relief Valve (Pump Backup) - Test

Table 25

Status(1)	Description	Specification	Actual	Comments
	Relief Valve (Pump Backup) - Test	30600 ± 400 kPa (4438 ± 58 psi)

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

Relief Valve - Test and Adjust (Steering Cylinder Work Port)

Table 26

Status(1)	Description	Specification	Actual	Comments
	Steering Cylinder Crossover Relief Valve - Test	306000 ± 400 kPa (44382 ± 58 psi)

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

Brake and Hydraulic Fan System

Reference: Refer to Testing & Adjusting, UENR0376, "Braking and Hydraulic Fan System" for more detail on the following test.

Service Brake System Pressure - Test

Table 27

Status(1)	Description	Specification	Actual	Comments
	Rear Service Brake Pressure (Brake ON)	4690 ± 350 kPa (680 ± 50 psi)
	Front Service Brake Pressure (Brake ON)	4690 ± 350 kPa (680 ± 50 psi)

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

Control Manifold (Charging Valve for the Brake Accumulators) - Test

Table 28

Status(1)	Description	Specification	Actual	Comments
	Cut-In Pressure	12760 ± 345 kPa (1851 ± 50 psi)
	Cut-Out Pressure	15500 ± 345 kPa (2250 ± 50 psi)

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

Hydraulic Fan

Table 29

Sales Model	Effectivity	Actual	Comments
966M	S/N:KJP1-1600 S/N:DYC1-1000
972M	S/N:A8P1-900 S/N:JPR1-800
Fan Speed
Minimum Fan Speed	500 ± 50 RPM
Maximum Fan Speed	1250 ± 50 RPM
Minimum Fan Speed with Optional Variable Pitch Fan	525 ± 75 RPM
Maximum Fan Speed with Optional Variable Pitch Fan	1470 ± 50 RPM

Table 30

Sales Model	Effectivity	Actual	Comments
966M	S/N:KJP1601-2400 S/N:DYC1001-1700 S/N:EJA138-1379
972M	S/N:A8P901-1500 S/N:JPR801-1300 S/N:LSJ152-1519
Fan Speed
Minimum Fan Speed	500 ± 50 RPM
Maximum Fan Speed	1250 ± 50 RPM
Minimum Fan Speed with Optional Variable Pitch Fan	525 ± 75 RPM
Maximum Fan Speed with Optional Variable Pitch Fan	1220 ± 30 RPM

Table 31

Sales Model	Effectivity	Actual	Comments
966M	S/N:KJP2401-UP S/N:DYC1701-UP S/N:EJA1380-UP S/N:LMM10202-UP
972M	S/N:A8P1501-UP S/N:JPR1301-UP S/N:LSJ1520-UP S/N:GGN10202-UP
Fan Speed
Minimum Fan Speed	500 ± 50 RPM
Maximum Fan Speed	1250 ± 50 RPM
Minimum Fan Speed with Optional Variable Pitch Fan	525 ± 75 RPM
Maximum Fan Speed with Optional Variable Pitch Fan	1300 ± 30 RPM

Table 32

Status(1)	Description	Specification	Actual	Comments
	Margin Pressure (High Idle)	1600 ± 100 kPa (232 ± 15 psi)
	High Pressure cutoff (High Idle)	23400 ± 350 kPa (3394 ± 50 psi)

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

S·O·S Samples

Reference: Refer to Operation and Maintenance Manual, SEBU9053, "Maintenance Interval Schedule" for more detail on performing S.0.S samples.

Engine Oil Sample

Table 33

Status(1)	Description	Obtain	Comments
	Engine Oil Sample

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

Engine Coolant Sample

Table 34

Status(1)	Description	Obtain	Comments
	Engine Coolant Sample

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

Hydraulic Oil Sample

Table 35

Status(1)	Description	Obtain	Comments
	Hydraulic Oil Sample

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

Differential & Final Drive Oil Samples

Table 36

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

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

Transmission/Torque Converter Oil Sample

Table 37

Status(1)	Description	Obtain	Comments
	Transmission/Torque Converter Oil Sample

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