980G Wheel Loader TA2 Technical Inspection{0372, 1000, 7000, 753T, 7565}
- Wheel Loader:
- 980G Series II (S/N: AXG1-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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| 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, RENR1363, "Electrical Starting System - Test". | ||
| 14 to 18 V at −7° C (19° F) to 10° C (50° F) |
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| 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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| 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 | Refer to Operation and Maintenance Manual. | ||
| Difference between the Upper and Lower Radiator Tank Temperatures | 2° + 5° - 5 °C (36° + 41° - 41 °F) |
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| Jacket Water Inlet Temperature from Cooling System | 89° ± 3°C (192° ± 5 °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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| Status (1) | Description | Specification | Actual | Comments |
|---|---|---|---|---|
| Fuel Pressure at HIGH IDLE | 640 ± 214 kPa (93 ± 31 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Lubrication System
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| Status (1) | Description | Specification | Actual | Comments |
| Engine Oil Pressure at LOW IDLE | 236 + 364 - 136 kPa (34 + 53 - 20 psi) |
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| Engine Oil Pressure at HIGH IDLE | 482 + 118 - 207 kPa (70 + 17 - 30 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Basic Engine
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| Status (1) | Description | Specification | Actual | Comments |
|---|---|---|---|---|
| Engine Speed at HIGH IDLE | 2200 ± 10 rpm | |||
| Engine Speed at LOW IDLE | 800 ± 10 rpm |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Air Inlet and Exhaust System
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| Status (1) | Description | Specification | Actual | Comments |
| Torque Converter Oil Temperature | 74° to 105°C (165° to 221° F) |
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| Torque Converter Stall Test Boost Pressure | 86.3 ± 13.0 kPa (12.5 ± 1.9 psi) |
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| Engine Speed | 1990 ± 65 rpm | |||
| Cylinder # 1 Exhaust Temperature (2) | Even | |||
| Cylinder # 2 Exhaust Temperature (2) | Even | |||
| Cylinder # 3 Exhaust Temperature (2) | Even | |||
| Cylinder # 4 Exhaust Temperature (2) | Even | |||
| Cylinder # 5 Exhaust Temperature (2) | Even | |||
| Cylinder # 6 Exhaust Temperature (2) | Even | |||
| Cylinder # 7 Exhaust Temperature (2) | Even | |||
| Cylinder # 8 Exhaust Temperature (2) | Even |
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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, RENR6018, "Electrohydraulic System" for more detail on the following test.
Implement Cycle Time - Check
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| Status (1) | Description | Specification | Actual | Comments |
| Lift Raise Time | 6.9 ± 0.5 seconds | |||
| Lift Lower Time | 4.0 ± 0.5 seconds | |||
| Dump Time | 3.2 ± 0.5 seconds | |||
| Tilt Back Time | 2.6 ± 0.5 seconds |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Lift and Tilt Cylinder Drift - Check
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| Status (1) | Description | Specification | Actual | Comments |
| Maximum Implement Drift in 5.0 minutes (2) for Rod Movement of Lift Cylinder | 15.0 mm (0.59 inch) |
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| Maximum Implement Drift in 2.7 minutes (3) for Rod Movement of Lift Cylinder | 15.0 mm (0.59 inch) |
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| Maximum Implement Drift in 1.7 minutes (4) for Rod Movement of Lift Cylinder | 15.0 mm (0.59 inch) |
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| Maximum Implement Drift in 5.0 minutes (2) for Rod Movement of Tilt Cylinder | 20.0 mm (0.79 inch) |
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| Maximum Implement Drift in 2.7 minutes (3) for Rod Movement of Tilt Cylinder | 20.0 mm (0.79 inch) |
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| Maximum Implement Drift in 1.7 minutes (4) for Rod Movement of Tilt Cylinder | 20.0 mm (0.79 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 50° to 65°C (122° to 149°F). |
| ( 4 ) | Oil temperature between 66°C (150°F). |
Brake Performance Checks
ReferenceRefer to Testing & Adjusting, RENR6015, "Braking System" for more detail on the following test.
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| 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, RENR6012, "Steering System" for more detail on the following test.
Steering Time - Check
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| Status (1) | Description | Specification | Actual | Comments |
| Left Steering Time for a Full Turn from Stop to Stop (HIGH IDLE) | 3.0 ± 0.5 seconds | |||
| Right Steering Time for a Full Turn from Stop to Stop (HIGH IDLE) | 3.0 ± 0.5 seconds | |||
| Difference between the steering time for a right turn and the steering time for a left turn | must not be more than 0.3 seconds |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Hydraulic System
ReferenceRefer to Testing & Adjusting, RENR6018, "Electrohydraulic System" for more detail on the following test.
Pilot System Pressure - Test
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| Status (1) | Description | Specification | Actual | Comments |
| Pilot System Pressure at HIGH IDLE | 3450 ± 200 kPa (500 ± 30 psi) |
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| Pilot System Pressure at Engine OFF | 2070 ± 200 kPa (300 ± 30 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Pilot Pressure to the Main Control Valve - Check
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| Status (1) | Description | Specification | Actual | Comments |
| Pilot Pressure at LOW IDLE | 2124 ± 150 kPa (310 ± 22 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Relief Valve (Main) - Test and Adjust
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| Status (1) | Description | Specification | Actual | Comments |
| Main Relief Valve Pressure for Standard Wheel Loader | 20700 ± 340 kPa (3000 ± 50 psi) |
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| Main Relief Valve Pressure for machines with the Block Handler Conversion Arrangement | 22400 ± 340 kPa (3250 ± 50 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Relief Valve (Line) - Test and Adjust
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| Status (1) | Description | Specification | Actual | Comments | |
| Tilt | Auxiliary | ||||
| Line Relief Valve Pressure for Head End | 21700 ± 400 kPa (3150 ± 60 psi) |
- | |||
| Line Relief Valve Pressure for Rod End | 14500 ± 400 kPa (2100 ± 60 psi) |
- | |||
| Line Relief Valve Pressure for Head End (Logging) | 27600 ± 400 kPa (4000 ± 60 psi) |
17200 ± 400 kPa (2500 ± 60 psi) |
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| Line Relief Valve Pressure for Rod End (Logging) | 10500 ± 400 kPa (1525 ± 60 psi) |
12400 ± 400 kPa (1800 ± 60 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Ride Control Accumulator - Test and Charge
Refer to Special Instruction, REHS5464, "Accumulator Discharging and Charging Procedures" for the required tooling and the testing and charging procedure.
Specifications
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| Accumulator Precharge Pressure/Temperature Relationship for a Typical Accumulator with a Precharge of 3790 kPa (550 psi) |
|
| Temperature | Pressure (1) |
−7°C (20°F) |
3411 kPa (495 psi) |
−1°C (30°F) |
3486 kPa (506 psi) |
4°C (40°F) |
3562 kPa (517 psi) |
10°C (50°F) |
3638 kPa (528 psi) |
16°C (60°F) |
3714 kPa (539 psi) |
21°C (70°F) |
3790 kPa (550 psi) |
27°C (80°F) |
3865 kPa (561 psi) |
32°C (90°F) |
3941 kPa (572 psi) |
38°C (100°F) |
4017 kPa (583 psi) |
43°C (110°F) |
4093 kPa (594 psi) |
49°C (120°F) |
4168 kPa (605 psi) |
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| ( 1 ) | Nominal allowable tolerance equals ± 70 kPa (± 10 psi). |
Power Train System
ReferenceRefer to Testing & Adjusting, RENR6008, "Power Train System" for more detail on the following tests.
Tire Pressure
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| 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 Stall - Test
This test is performed using the operator monitor. Refer to Testing and Adjusting, RENR6008, "Torque Converter Stall - Test" for further instruction.
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| Status (1) | Description | Specification | Actual | Comments |
| Torque Converter Oil Temperature | 75° to 105°C (167° to 220°F) |
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| Torque Converter Stall Speeds | 1990 ± 65 RPM |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Transmission Pressures - Test and Adjust for 980H S/N:MHG1-3999
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| Status (1) | Description | Specification | Actual | Comments |
| Transmission Lubrication Oil Pressure at Pressure Tap (A) (LOW IDLE) | 7 kPa (1 psi) minimum |
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| Transmission Lubrication Oil Pressure at Pressure Tap (A) (HIGH IDLE) | 145 to 179 kPa (21 to 26 psi) at 2100 rpm. The transmission is in THIRD speed and in NEUTRAL position. |
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| Torque Converter Outlet Pressure at Pressure Tap (B) (HIGH IDLE) | 380 kPa (55 psi) minimum and 620 kPa (90 psi) maximum (4) |
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| Torque Converter Inlet Pressure at Pressure Tap (C) (HIGH IDLE | 980 kPa (142 psi) with cold oil 827 kPa (120 psi) with oil at normal operating temperature |
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| Direction Clutch Pressure "P2" at Pressure Tap (D) | 379 ± 55 kPa (55 ± 5 psi) lower than the speed clutch pressure at pressure tap (F). Plug (H) for the load piston is installed. |
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| Oil Pump Pressure at Pressure Tap (E) (HIGH IDLE | 69 to 207 kPa (10 to 30 psi) higher than "P1" pressure. |
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| Speed Clutch "P1" (Initial Pressure) at Pressure Tap (F) (LOW IDLE | 522 ± 35 kPa (76 ± 5 psi) when the direction switch is in the NEUTRAL position and FIRST speed is selected. Plug (H) for the load piston is removed. |
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| Speed Clutch "P1" at Pressure Tap (F) (LOW IDLE | Greater than 2205 kPa (320 psi) with the transmission in THIRD speed and in NEUTRAL. Plug (H) for the load piston is installed. |
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| Speed Clutch "P1" at Pressure Tap (F) (HIGH IDLE | 2450 kPa (355 psi) minimum and 2650 kPa (384 psi) maximum with the transmission in THIRD speed and in NEUTRAL. Plug (H) for the load piston is installed. |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
| ( 4 ) | The transmission is in THIRD speed and in FORWARD position. The torque converter is in a stall condition. |
Steering System
ReferenceRefer to Testing & Adjusting, RENR6012, "Steering System" for more detail on the following tests.
Relief Valve (Steering Cylinder Crossover) - Test and Adjust
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| Status (1) | Description | Specification | Actual | Comments |
| Steering Cylinder Crossover Relief Valve Pressure | 29100 ± 700 kPa (4220 ± 100 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Steering System Pressure (High Pressure Stall) - Test and Adjust
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| Status (1) | Description | Specification | Actual | Comments |
| Steering System Pressure (High Pressure Stall) | 24000 ± 350 kPa (3480 ± 50 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Piston Pump (Steering) Low Pressure Standby - Test and Adjust
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| Status (1) | Description | Specification | Actual | Comments |
| Low Pressure Standby | 5200 kPa (750 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Piston Pump (Steering) Margin Pressure - Test and Adjust
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| Status (1) | Description | Specification | Actual | Comments |
| Margin Pressure | 2800 ± 100 kPa (406.1 ± 14.5 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Relief Valve (Pump Backup) - Test and Adjust
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| Status (1) | Description | Specification | Actual | Comments |
| Relief Valve (Pump Backup) Pressure | 27600 ± 700 kPa (4000 ± 100 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Steering Neutralizer Valve - Check and Adjust
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| Status (1) | Description | Specification | Actual | Comments |
| Pressed Putty Thickness | 12.7 ± 3 mm (0.5 ± 0.12 inch) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Pilot Valve (Steering) Supply Pressure - Test and Adjust
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| Status (1) | Description | Specification | Actual | Comments |
| Pilot Valve (Steering) Supply Pressure at pressure tap (3) | 3450 ± 250 kPa (500 ± 36 psi) |
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| Pilot Valve (Steering) Supply Pressure at pressure tap (2) | 645 ± 15 kPa (93 ± 2 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Brake and Hydraulic Fan System
ReferenceRefer to Testing & Adjusting, RENR6018, "Electrohydraulic System", and Testing & Adjusting, RENR6015, "Braking System" for more detail on the following tests.
Hydraulic Fan Speed - Test and Adjust
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| Status (1) | Description | Specification | Actual | Comments |
| Hydraulic Fan Speed at LOW IDLE (2) | 500 + 75 − 25 rpm | |||
| Hydraulic Fan Speed at HIGH IDLE (2) | 1250 ± 25 rpm |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
| ( 2 ) | The fan speed is at low idle. The solenoid valve (demand fan) is connected. |
| ( 2 ) | The hydraulic fan speed is at high idle. The solenoid valve (demand fan) is disconnected. |
Brake Accumulator - Test and Charge
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| 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) |
Accumulator Charging Valve (Brake) - Test and Adjust
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| Status (1) | Description | Specification | Actual | Comments |
| Cutout Pressure | 14485 ± 345 kPa (2100 ± 50 psi) |
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| Cut-in Pressure | 11725 ± 345 kPa (1700 ± 50 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Service Brake System Pressure - Test
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| Status (1) | Description | Specification | Actual | Comments |
| Rear Service Brake Pressure (Brake ON) | 4310 ± 350 kPa (625 ± 50 psi) |
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| Front Service Brake Pressure (Brake ON) | 4310 ± 350 kPa (625 ± 50 psi) |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
S·O·S Samples
ReferenceRefer to Operation and Maintenance Manual, SEBU7362, "Maintenance Interval Schedule" for more detail on performing S.O.S samples.
Engine Oil Sample
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| 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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| 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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| 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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| 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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| 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 |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
Transmission/Torque Converter Oil Sample
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| Status (1) | Description | Obtain | Comments |
| Transmission/Torque Converter Oil Sample |
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| ( 1 ) | N = Normal, M = Monitor, A = Action |
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