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973D Track-Type Tractor TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565} Caterpillar


973D Track-Type Tractor TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565}

Usage:

973D LCP
Track-Type Loader
973D (S/N: LCP1-UP)

Introduction

Inspections are the most basic form of condition monitoring. They 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 effectively intervene 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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  3. 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  12.45 VDC or more    Refer to Testing and Adjusting, SENR9830, "Battery - Test" 
  Charging System Test  28 ± 1 VDC    Refer to Testing and Adjusting, SENR9830, "Charging System - Test".
Refer to Special Instruction, REHS0354, "Charging System Troubleshooting". 
  Electric Starting System Test  -    Refer to Testing and Adjusting, SENR9830, "Electric Starting System - Test". 
Show/hide table
(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)      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      Use 245-5829 Coolant/Battery Tester Gp 
  Conditioner Test of Engine Coolant      Use 245-5829 Coolant/Battery Tester Gp 
  Difference between the Upper and Lower Radiator Tank Temperatures       
Show/hide table
(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 Pressure at low Idle Speed  400 to 434 kPa (58 to 63 psi)     
  Fuel Pressure at normal operating load condition  455 to 579 kPa (66 to 84 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Lubrication System

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Table 4
Status(1)  Description  Specification  Actual  Comments 
  Minimum Engine Oil Pressure at Low Idle  125 kPa (18 psi)     
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(1) N = Normal, M = Monitor, A = Action

Basic Engine

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Table 5
Status(1)  Description  Specification  Actual  Comments 
  Engine Speed at Low Idle       
  Engine Speed at High Idle       
  Cylinder Cutout Test      Cat® Electronic Technician (Cat ET) Service Tool 
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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 
  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)       
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Compare the exhaust temperature variance at each exhaust port.

Performance Checks

Reference: Refer to Testing & Adjusting, KENR6528, "Hydraulic System" for more detail on the following test.

Operational Checks

Cycle Times

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Table 7
Status(1)  Description  Specification  Actual  Comments 
  Lift Cylinder RAISE (ground level to maximum height)  6.5 ± 0.2 seconds     
  Lift Cylinder Power LOWER (maximum height to ground level)  3.8 ± 0.2 seconds     
  Lift Cylinder Float LOWER (maximum height to ground level)  2.7 ± 0.2 seconds     
  Tilt Cylinder DUMP at maximum height (moving from full TILT BACK to full DUMP)  1.4 ± 0.2 seconds     
  Tilt Cylinder TILT BACK at maximum height (moving from full DUMP to full TILT BACK)  2.2 ± 0.2 seconds     
  Ripper Cylinder RAISE (ground level to maximum height)  2.0 ± 0.2 seconds     
  Ripper Cylinder LOWER (maximum height to ground level)  2.4 ± 0.2 seconds     
  Multipurpose Bucket Cylinder OPEN (from full CLOSE to full OPEN)  1.0 ± 0.2 seconds     
  Multipurpose Bucket Cylinder CLOSE (from full OPEN to full CLOSE)  1.3 ± 0.2 seconds     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Drift Test for Lift Cylinders

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Table 8
Status(1)  Description  Specification  Actual  Comments 
  Maximum Allowable Drift for Lift Cylinder at oil temperature of 38 ± 3°C (100 ± 37°F) and time interval of 5.0 minutes  8.68 mm (0.342 inch)     
  Maximum Allowable Drift for Lift Cylinder at oil temperature of 49 ± 3°C (120 ± 37°F) and time interval of 5.0 minutes  13.65 mm (0.537 inch)     
  Maximum Allowable Drift for Lift Cylinder at oil temperature of 66 ± 3°C (150 ± 37°F) and time interval of 5.0 minutes  24.55 mm (0.967 inch)     
  Maximum Allowable Drift for Lift Cylinder at oil temperature of 82 ± 3°C (180 ± 37°F) and time interval of 5.0 minutes  39.31 mm (1.548 inch)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Drift Test for Tilt Cylinder

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Table 9
Status(1)  Description  Specification  Actual  Comments 
  Maximum Allowable Drift for Tilt Cylinder at oil temperature of 38 ± 3°C (100 ± 37°F) and time interval of 5.0 minutes  8.56 mm (0.337 inch)     
  Maximum Allowable Drift for Tilt Cylinder at oil temperature of 49 ± 3°C (120 ± 37°F) and time interval of 5.0 minutes  13.46 mm (0.530 inch)     
  Maximum Allowable Drift for Tilt Cylinder at oil temperature of 66 ± 3°C (150 ± 37°F) and time interval of 5.0 minutes  24.21 mm (0.953 inch)     
  Maximum Allowable Drift for Tilt Cylinder at oil temperature of 82 ± 3°C (180 ± 37°F) and time interval of 5.0 minutes  38.77 mm (1.526 inch)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Drift Test for Ripper Cylinder

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Table 10
Status(1)  Description  Specification  Actual  Comments 
  Maximum Allowable Drift for Ripper Cylinder at oil temperature of 38 ± 3°C (100 ± 37°F) and time interval of 5.0 minutes  3.2 mm (0.126 inch)     
  Maximum Allowable Drift for Ripper Cylinder at oil temperature of 49 ± 3°C (120 ± 37°F) and time interval of 5.0 minutes  4.8 mm (0.189 inch)     
  Maximum Allowable Drift for Ripper Cylinder at oil temperature of 66 ± 3°C (150 ± 37°F) and time interval of 5.0 minutes  9.0 mm (0.354 inch)     
  Maximum Allowable Drift for Ripper Cylinder at oil temperature of 82 ± 3°C (180 ± 37°F) and time interval of 5.0 minutes  15.0 mm (0.591 inch)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Drift Test for Multipurpose Bucket Cylinder

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Table 11
Status(1)  Description  Specification  Actual  Comments 
  Maximum Allowable Drift for Multipurpose Bucket Cylinder at oil temperature of 38 ± 3°C (100 ± 37°F) and time interval of 5.0 minutes  12.0 mm (0.472 inch)     
  Maximum Allowable Drift for Multipurpose Bucket Cylinder at oil temperature of 49 ± 3°C (120 ± 37°F) and time interval of 5.0 minutes  18.0 mm (0.709 inch)     
  Maximum Allowable Drift for Multipurpose Bucket Cylinder at oil temperature of 66 ± 3°C (150 ± 37°F) and time interval of 5.0 minutes  26.0 mm (1.024 inch)     
  Maximum Allowable Drift for Multipurpose Bucket Cylinder at oil temperature of 82 ± 3°C (180 ± 37°F) and time interval of 5.0 minutes  40.0 mm (1.575 inch)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Hydraulic System

Reference: Refer to Testing & Adjusting, KENR6528, "973D Track-Type Loader Systems" for more detail on the following test.

Hydraulic Pump - Test and Adjust

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Table 12
Status(1)  Description  Specification  Actual  Comments 
  Margin Pressure (Front Hydraulic Pump)  2000 ± 100 kPa (290 ± 15 psi)     
  Margin Pressure (Rear Hydraulic Pump)  2000 ± 100 kPa (290 ± 15 psi)     
  Pump Discharge Pressure (R2)  27500 ± 450 kPa (3989 ± 65 psi)     
  Pump Discharge Pressure (R2) High-Pressure Cutoff (Front Hydraulic Pump)  30000 ± 350 kPa (4351 ± 51 psi)     
  Pump Discharge Pressure (R2) High-Pressure Cutoff (Rear Hydraulic Pump)  30000 ± 350 kPa (4351 ± 51 psi)     
  Load Sensing Pressure (R5)  25500 ± 350 kPa (3699 ± 51 psi)     
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(1) N = Normal, M = Monitor, A = Action

Relief Valve - Test and Adjust

Bench Test Only

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Table 13
Status(1)  Description  Specification  Actual  Comments 
  Relief valve pressure at head end of lift cylinder (1)  36500 ± 800 kPa (5294 ± 116 psi)     
  Relief valve pressure at head end of tilt cylinder (2)  40000 ± 90 kPa (5802 ± 13 psi)     
  Margin relief valve pressure (3)  3450 ± 250 kPa (500 ± 36 psi)     
  Relief valve pressure at rod end of tilt cylinder (4)  30000 ± 800 kPa (4351 ± 116 psi)(2)     
  41700 ± 1000 kPa (6048 ± 145 psi)(3)    
  Relief valve pressure at rod end of ripper cylinders (5)  29000 ± 700 kPa (4206 ± 102 psi)     
  Relief valve pressure at head end of ripper cylinders (8)   
  Relief valve pressure at rod end of multipurpose bucket cylinders (6)  19000 ± 550 kPa (2756 ± 80 psi)     
  Relief valve pressure at head end of multipurpose bucket cylinders (7)  19000 ± 550 kPa (2756 ± 80 psi)     
29000 ± 800 kPa (4206 ± 116 psi)  
  Relief valve pressure at Load Sensing relief valve (9) (4)  25325 ± 175 kPa (3673 ± 25 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) If, the pressure from the head end of the lift cylinders is below 5200 kPa (754 psi) then set the relief valve to this pressure.
(3) If, the pressure from the head end of the lift cylinders is above 7600 kPa (1102 psi) then set the relief valve to this pressure.
(4) The load sensing relief valve should not be tested here. The load sensing relief valve is tested and adjusted in Testing and Adjusting , "Hydraulic Pump - Test and Adjust".

Power Train System

Reference: Refer to Testing & Adjusting, KENR6524, "973D Track-Type Loader Power Train Systems" for more detail on the following test.

Final Hydrostatic Speed - Test

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Table 14
Speed Parameters of the Electronic Control Module (ECM) 
Status(1)  Description  Specification  Actual  Comments 
  Forward Maximum Ground Speed  11 km/h (6.8 mph)     
  Reverse Maximum Ground Speed  11 km/h (6.8 mph)     
  Reverse Speed as a percent of Forward Speed  100%     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Hydrostatic speed test in the FORWARD position

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Table 15
Status(1)  Description  Specification  Actual  Comments 
  Engine speed  1900 ± 100 rpm     
  Drive Loop Pressure for the Front Pump (R6)  7000 ± 2000 kPa (1015 ± 290 psi)     
  Drive Loop Pressure for the Rear Pump (R7)  7000 ± 2000 kPa (1015 ± 290 psi)     
  Speed of the left drive motor  3290 ± 50 rpm     
  Speed of the right drive motor  3290 ± 50 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Hydrostatic speed test in the REVERSE position

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Table 16
Status(1)  Description  Specification  Actual  Comments 
  Engine speed  1900 ± 100 rpm     
  Drive Loop Pressure for the Front Pump (R8)  7000 ± 2000 kPa (1015 ± 290 psi)     
  Drive Loop Pressure for the Rear Pump (R9)  7000 ± 2000 kPa (1015 ± 290 psi)     
  Speed of the left drive motor  -3290 ± 50 rpm     
  Speed of the right drive motor  -3290 ± 50 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Piston Pump and Motor Maximum Displacement - Test

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Table 17
Status(1)  Description  Specification  Actual  Comments 
  Engine Speed  1900 ± 100 rpm     
  Left Motor Speed  1047 ± 62.5 rpm     
  Right Motor Speed  1047 ± 62.5 rpm     
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(1) N = Normal, M = Monitor, A = Action

Accumulator - Test and Charge

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Table 18
Status(1)  Description  Specification  Actual  Comments 
  Engine Speed  900 ± 100     
  Line Pressure Before purge Down  3100 ± 150 kPa (450 ± 22 psi)     
  Accumulator Charge Pressure  2000 ± 10 kPa (290 ± 2 psi)     
  Purge Down Time  35 Seconds     
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(1) N = Normal, M = Monitor, A = Action

Initial Pressure Tests

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Table 19
Status(1)  Description  Specification  Actual  Comments 
  Engine Speed  1900 ± 100 rpm     
  Hystat Case Pressure (R3)  150 ± 75 kPa (22 ± 11 psi)     
  Brake Pressure (R4)  3300 ± 200 kPa (479 ± 29 psi)     
  Charge Pressure for the Right Hystat Pump (P3)  3800 ± 150 kPa (551 ± 22 psi)     
  Charge Pressure for the Left Hystat Pump (P1)  3100 ± 150 kPa (450 ± 22 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Transmission Stall - Test

Transmission Stall Test in the FORWARD Position

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Table 20
Status(1)  Description  Specification  Actual  Comments 
  Engine speed before Stall  1900 ± 100 rpm     
  Drive Loop Pressure for the Left Pump (R6)  44600 ± 2000 kPa (6469 ± 290 psi)     
  Drive Loop Pressure for the Right Pump (R7)  44600 ± 2000 kPa (6469 ± 290 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Transmission Stall Test in the REVERSE Position

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Table 21
Status(1)  Description  Specification  Actual  Comments 
  Engine speed before Stall  1900 ± 100 rpm     
  Drive Loop Pressure for the Left Pump (R8)  44600 ± 2000 kPa (6469 ± 290 psi)     
  Drive Loop Pressure for the Right Pump (R9)  44600 ± 2000 kPa (6469 ± 290 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Remote Transmission Stall - Test

Remote Transmission Stall Test in the FORWARD Position

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Table 22
Status(1)  Description  Specification  Actual  Comments 
  Engine speed before Stall  1900 ± 100 rpm     
  Drive Loop Pressure for the Front Pump (R6)  44600 ± 2000 kPa (6469 ± 290 psi)     
  Drive Loop Pressure for the Rear Pump (R7)  44600 ± 2000 kPa (6469 ± 290 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Remote Transmission Stall Test in the REVERSE Position

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Table 23
Status(1)  Description  Specification  Actual  Comments 
  Engine speed before Stall  1900 ± 100 rpm     
  Drive Loop Pressure for the Front Pump (R8)  44600 ± 2000 kPa (6469 ± 290 psi)     
  Drive Loop Pressure for the Rear Pump (R9)  44600 ± 2000 kPa (6469 ± 290 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Braking System

Reference: Refer to Testing & Adjusting, KENR6524, "973D Track-Type Loader Systems" for more detail on the following test.

Brake Pedal - Test

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Table 24
Status(1)  Description  Specification  Actual  Comments 
  The Brake Pedal Is Fully Released  3300 ± 200 kPa (479 ± 29 psi)     
  The Brake Pedal Is Fully Applied  100 ± 100 kPa (15 ± 15 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Steering System

Reference: Refer to Testing & Adjusting, KENR6524, "973D Track-Type Loader Systems" for more detail on the following test.

Steering - Test - Joystick Steering (C-Steer Configuration)

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Table 25
Speed Parameters of the Electronic Control Module (ECM) 
Status(1)  Description  Specification  Actual  Comments 
  Forward Maximum Ground Speed  11 km/h (6.8 mph)     
  Reverse Maximum Ground Speed  11 km/h (6.8 mph)     
  Reverse Speed as a percent of Forward Speed  100%     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Steering Test (Joystick Steering (C-Steer Configuration)) In The FORWARD Position

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Table 26
Steering Control Lever Fully To The Left And The Transmission Control Lever In The Full FORWARD Position 
Status(1)  Description  Specification  Actual  Comments 
  Engine speed  1900 ± 100 rpm     
  Drive Loop Pressure for the Left Pump (R8)  5000 ± 2000 kPa (725 ± 290 psi)     
  Drive Loop Pressure for the Right Pump (R7)  5000 ± 2000 kPa (725 ± 290 psi)     
  Speed of the left drive motor  -1975 ± 100 rpm     
  Speed of the right drive motor  3291 ± 100 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Show/hide table
Table 27
Steering Control Lever Fully To The Right And The Transmission Control Lever In The Full FORWARD Position 
Status(1)  Description  Specification  Actual  Comments 
  Engine speed  1900 ± 100 rpm     
  Drive Loop Pressure for the Left Pump (R6)  5000 ± 2000 kPa (725 ± 290 psi)     
  Drive Loop Pressure for the Right Pump (R9)  5000 ± 2000 kPa (725 ± 290 psi)     
  Speed of the left drive motor  3291 ± 100 rpm     
  Speed of the right drive motor  -1975 ± 100 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Steering Test (Joystick Steering (C-Steer Configuration)) In The REVERSE Position

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Table 28
Steering Control Lever Fully To The Left And The Transmission Control Lever In The Full REVERSE Position 
Status(1)  Description  Specification  Actual  Comments 
  Engine speed  1900 ± 100 rpm     
  Drive Loop Pressure for the Left Pump (R6)  5000 ± 2000 kPa (725 ± 290 psi)     
  Drive Loop Pressure for the Right Pump (R9)  5000 ± 2000 kPa (725 ± 290 psi)     
  Speed of the left drive motor  1975 ± 100 rpm     
  Speed of the right drive motor  -3291 ± 100 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Show/hide table
Table 29
Steering Control Lever Fully To The Right And The Transmission Control Lever In The Full REVERSE Position 
Status(1)  Description  Specification  Actual  Comments 
  Engine speed  1900 ± 100 rpm     
  Drive Loop Pressure for the Left Pump (R8)  5000 ± 2000 kPa (725 ± 290 psi)     
  Drive Loop Pressure for the Right Pump (R7)  5000 ± 2000 kPa (725 ± 290 psi)     
  Speed of the left drive motor  -3291 ± 100 rpm     
  Speed of the right drive motor  1975 ± 100 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Steering - Test - Pedal Steering Configuration

Show/hide table
Table 30
Speed Parameters of the Electronic Control Module (ECM) 
Status(1)  Description  Specification  Actual  Comments 
  Forward Maximum Ground Speed  11 km/h (6.8 mph)     
  Reverse Maximum Ground Speed  11 km/h (6.8 mph)     
  Reverse Speed as a percent of Forward Speed  100%     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Steering Test (Pedal Steering Configuration) In The FORWARD Position

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Table 31
Fully Depress the Left Steering Pedal and the Transmission Control Lever in the Full FORWARD Position 
Status(1)  Description  Specification  Actual  Comments 
  Engine speed  1900 ± 100 rpm     
  Drive Loop Pressure for the Left Pump (R8)  5000 ± 2000 kPa (725 ± 290 psi)     
  Drive Loop Pressure for the Right Pump (R7)  5000 ± 2000 kPa (725 ± 290 psi)     
  Speed of the left drive motor  -1975 ± 100 rpm     
  Speed of the right drive motor  3291 ± 100 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Show/hide table
Table 32
Fully Depress the Right Steering Pedal and the Transmission Control Lever in the Full FORWARD Position 
Status(1)  Description  Specification  Actual  Comments 
  Engine speed  1900 ± 100 rpm     
  Drive Loop Pressure for the Left Pump (R6)  5000 ± 2000 kPa (725 ± 290 psi)     
  Drive Loop Pressure for the Right Pump (R9)  5000 ± 2000 kPa (725 ± 290 psi)     
  Speed of the left drive motor  3291 ± 100 rpm     
  Speed of the right drive motor  -1975 ± 100 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Steering Test (Pedal Steering Configuration) In The REVERSE Position

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Table 33
Fully Depress the Left Steering Pedal and the Transmission Control Lever In The Full REVERSE Position 
Status(1)  Description  Specification  Actual  Comments 
  Engine speed  1900 ± 100 rpm     
  Drive Loop Pressure for the Left Pump (R6)  5000 ± 2000 kPa (725 ± 290 psi)     
  Drive Loop Pressure for the Right Pump (R9)  5000 ± 2000 kPa (725 ± 290 psi)     
  Speed of the left drive motor  1975 ± 100 rpm     
  Speed of the right drive motor  -3291 ± 100 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Show/hide table
Table 34
Fully Depress the Right Steering Pedal and the Transmission Control Lever In The Full REVERSE Position 
Status(1)  Description  Specification  Actual  Comments 
  Engine speed  1900 ± 100 rpm     
  Drive Loop Pressure for the Left Pump (R6)  5000 ± 2000 kPa (725 ± 290 psi)     
  Drive Loop Pressure for the Right Pump (R9)  5000 ± 2000 kPa (725 ± 290 psi)     
  Speed of the left drive motor  -3291 ± 100 rpm     
  Speed of the right drive motor  1975 ± 100 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Steering - Test - Joystick Steering (S-Steer Configuration)

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Table 35
Speed Parameters of the Electronic Control Module (ECM) 
Status(1)  Description  Specification  Actual  Comments 
  Forward Maximum Ground Speed  11 km/h (6.8 mph)     
  Reverse Maximum Ground Speed  11 km/h (6.8 mph)     
  Reverse Speed as a percent of Forward Speed  100%     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Show/hide table
Table 36
Transmission Control Lever in the full LEFT Position and the Transmission Control Lever in the NEUTRAL Position 
Status(1)  Description  Specification  Actual  Comments 
  Engine Speed  1900 ± 100 rpm     
  Drive Loop Pressure for the Front Pump (R8)  5000 ± 2000 kPa (725 ± 300 psi)     
  Drive Loop Pressure for the Front Pump (R7)  5000 ± 2000 kPa (725 ± 300 psi)     
  Speed of the Left Drive Motor  -1975 ± 100 rpm     
  Speed of the Right Drive Motor  1975 ± 100 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Show/hide table
Table 37
Transmission Control Lever in the full RIGHT Position and the Transmission Control Lever in the NEUTRAL Position 
Status(1)  Description  Specification  Actual  Comments 
  Engine Speed  1900 ± 100 rpm     
  Drive Loop Pressure for the Front Pump (R6)  5000 ± 2000 kPa (725 ± 300 psi)     
  Drive Loop Pressure for the Front Pump (R9)  5000 ± 2000 kPa (725 ± 300 psi)     
  Speed of the Left Drive Motor  1975 ± 100 rpm     
  Speed of the Right Drive Motor  -1975 ± 100 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

S.O.S

Reference: Refer to Operation and Maintenance Manual, SEBU8357, "Maintenance Interval Schedule" for more detail on the following S.O.S.

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Table 38
Status(1)  Description  Obtain  Comments 
  Engine Oil Sample  Every 250 Service Hours   
  Engine Coolant Sample (Level I)  Every 500 Service Hours   
  Engine Coolant Sample (Level II)  Initial 500 Service Hours
Every Year 		  
  Hydrostatic Transmission and Hydraulic System Oil Sample  Every 500 Service Hours   
  Final Drive Oil Sample (Right and Left)  Every 500 Service Hours   
  Winch  Every 500 Service Hours   
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Caterpillar Information System:

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D8T Track-Type Tractor Machine Systems Steering Pump - Assemble
986K Large Wheel Loader Systems Ride Control Accumulator - Test and Charge
Procedure to Install an Updated Cushion Hitch Harness on Certain 621K, 623K, and 627K Wheel Tractor Scrapers {1408, 7107} Procedure to Install an Updated Cushion Hitch Harness on Certain 621K, 623K, and 627K Wheel Tractor Scrapers {1408, 7107}
MD6310 Rotary Blasthole Drill Machine Systems Air Cleaner - Mounting
MD6310 Rotary Blasthole Drill Machine Systems Air Compressor - Lines
973 K Track-Type Loaders Multipurpose Bucket Cylinder
MD6310 Rotary Blasthole Drill Machine Systems Counterbalance Valve
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