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631K Wheel Tractor- Scraper TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565} Caterpillar


631K Wheel Tractor- Scraper TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565}

Usage:

631K WTR
Wheel Tractor-Scraper
631K (S/N: WTR1-UP)

Introduction

Inspections are the most basic form of condition monitoring. The 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 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

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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 Troubleshooting". 
  Electric Starting System Test  12 to 16 V at −23° C (−10° F) to −7° C (19° F)    Refer to Testing and Adjusting, UENR3402, "Electric and 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)
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)  -     
  Freezing Point of Engine Coolant  -     
  Conditioner Test of Engine Coolant  -     
  Belt Tension  -    Auto Adjust Belt Tensioner 
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(1) N = Normal, M = Monitor, A = Action
(2) Test for the pressure that is listed on the cap.

Fuel System

Reference: Refer to Testing & Adjusting, UENR0946, "Fuel System Pressure - Test" for more detail on the following tests.

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Table 3
Status(1)  Description  Specification  Actual  Comments 
  Fuel Pressure  496 kPa (72 psi) to 737 kPa (107 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Lubrication System

Reference: Refer to Testing & Adjusting, UENR0946, "Engine Oil Pressure - Test" for more detail on the following tests.

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Table 4
Status(1)  Description  Specification  Actual  Comments 
  Engine Oil Pressure at Low Idle  103 kPa (15 psi) to 151 kPa (22 psi)     
  Engine Oil Pressure at Full Load Speed  496.42272 kPa (72 psi) to 737 kPa (107 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  740 rpm to 760 rpm     
  Engine Speed at High Idle  2110 rpm to 2130 rpm     
  Cylinder Cutout Test  -     
Show/hide table
(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)  -     
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(1) N = Normal, M = Monitor, A = Action
(2) Compare the exhaust temperature variance at each exhaust port.

Performance Checks

Reference: Refer to Testing & Adjusting, UENR4608 for more detail on the following tests.

Brake Performance Checks

Reference: Refer to Operation and Maintenance Manual, M0064346, "Braking System - Test" for more detail on the following tests.

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Table 7
Status(1)  Description  Specification  Actual  Comments 
  Service Brake Test (Test from OMM)  1200 rpm     
  Parking Brake Test (Test from OMM)  900 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Secondary Steering Performance Checks

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Table 8
Status(1)  Description  Specification  Actual  Comments 
  Three Second Powerup Test  -     
  Secondary Steering Response Test - Steer Right (Stop to Stop)  -     
  Secondary Steering Response Test - Steer Left (Stop to Stop)  -     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Steering Performance Checks

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Table 9
Status(1)  Description  Specification  Actual  Comments 
  Steering Wheel Slip Test  25 ± 5°     
  Steering Time Stop to Stop (Full Left to Full Right)  5.0 ± 0.5 seconds     
  Steering Time Stop to Stop (Full Right to Full Left)  5.0 ± 0.5 seconds     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Hydraulic Performance Checks

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Table 10
Status(1)  Description  Specification  Actual  Comments 
  Bowl Raise (Ground Level to Maximum Height)  3.5 ± .5 seconds     
  Bowl Lower (Maximum Height to Ground Level)  3.5 ± .5 seconds     
  Apron Lift (Full Lowered to Maximum Height)  4.0 ± .5 seconds     
  Apron Lower (Maximum Height to Full Lowered)  3.8 ± .5 seconds     
  Ejector Travel (Full Foreword to Rear Position  8.5 ± .5 seconds     
  Ejector Travel (Full Rear to Foreword Position  8.5 ± .5 seconds     
  Bail Cylinder - Full Raise  1.5 ± .5 seconds     
  Bail Cylinder - Full Lower  2.1 ± .5 seconds     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Cylinder Drift Tests

Reference: Refer to Testing & Adjusting, UENR4608, "Hydraulic Cylinder Drift - Check" for more detail on the following tests.

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Table 11
Status(1)  Description  Specification  Actual  Comments 
  Bowl Cylinders  30° C (86° F)
Less than 1 mm (0.04 inch) 		    
60° C (140° F)
Less than 4.5 mm (0.18 inch) 		 
90° C (194° F)
Less than 8.0 mm (0.32 inch) 		 
  Apron Cylinder  Less than 6.5 mm (0.25 inch)     
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(1) N = Normal, M = Monitor, A = Action

Hydraulic and Steering System

Steering System

Steering Relief Valve Pressure

Reference: Refer to Testing & Adjusting, UENR4608, "Relief Valve (Steering Cylinder Crossover) - Test and Adjust" for more detail on the following tests.

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Table 12
Status(1)  Description  Specification  Actual  Comments 
  LH Turn Pressure  17800 ± 800 kPa (2582 ± 116 psi)     
  RH Turn Pressure  17800 ± 800 kPa (2582 ± 116 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Steering Standby Pressure and Steering Pump High-Pressure Cutoff.

Reference: Refer to Testing & Adjusting, UENR4608, "Steering System Pressure - Test and Adjust" for more detail on the following tests.

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Table 13
Status(1)  Description  Specification  Actual  Comments 
  Low-Pressure Standby Differential Pressure  2100 ± 100 kPa (305 ± 14.5 psi)     
  High Idle Steering Pump High-Pressure Cutoff  20500 ± 350 kPa (2973 ± 51 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Implement Hydraulic System

Pump Control Valve

Reference: Refer to Testing & Adjusting, UENR4608, "Pump Control Valve (Cushion-Hitch) - Test and Adjust" for more detail on the following tests.

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Table 14
Status(1)  Description  Specification  Actual  Comments 
  Main Relief Valve - Test       
  Pump Control Valve (Cushion Hitch) - Test(2)  18700 ± 350 kPa (2712 ± 51 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) The cushion-hitch control switch must be in the OFF position, and the engine speed set at HIGH IDLE.

Ejector Relief Valve

Reference: Refer to Testing & Adjusting, UENR4608, "Relief Valve (Scraper Bowl) - Test and Adjust" for more detail on the following tests.

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Table 15
Status(1)  Description  Specification  Actual  Comments 
  Ejector Forward Relief(2)  25800 ± 690 kPa (3742 ± 100 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine set at HIGH IDLE

Bowl Relief Valve

Reference: Refer to Testing & Adjusting, UENR4608, "Relief Valve (Scraper Bowl) - Test and Adjust" for more detail on the following tests.

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Table 16
Status(1)  Description  Specification  Actual  Comments 
  Bowl Raise Relief(2)  25800 ± 690 kPa (3742 ± 100 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine set at HIGH IDLE

Apron Relief Valve

Reference: Refer to Testing & Adjusting, UENR4608, "Relief Valve (Apron) - Test and Adjust" for more detail on the following tests.

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Table 17
Status(1)  Description  Specification  Actual  Comments 
  Apron Raise Relief(2)  23000 ± 300 kPa (3336 ± 44 psi)     
  Apron Lower Relief(3)  26900 ± 300 kPa (3900 ± 44 psi)     
  Apron Rod End Line(3)  3000 kPa (435 psi) Maximum     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) At HIGH IDLE
(3) At LOW IDLE

Pressure Reducing Valve

Reference: Refer to Testing & Adjusting, UENR4608, "Pressure Reducing Valve (Pilot, Implement) - Test and Adjust" for more detail on the following tests.

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Table 18
Status(1)  Description  Specification  Actual  Comments 
  Bowl RAISE  3450 ± 345 kPa (500 ± 50 psi)     
  Bowl LOWER  3450 ± 345 kPa (500 ± 50 psi)     
  Ejector FORWARD  3450 ± 345 kPa (500 ± 50 psi)     
  Ejector REVERSE  3450 ± 345 kPa (500 ± 50 psi)     
  Apron RAISE  3450 ± 345 kPa (500 ± 50 psi)     
  Apron LOWER  3450 ± 345 kPa (500 ± 50 psi)     
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(1) N = Normal, M = Monitor, A = Action

Relief Valve (Push-Pull)

Reference: Refer to Testing & Adjusting, UENR4608, "Relief Valve (Push-Pull) - Test and Adjust" for more detail on the following tests.

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Table 19
Status(1)  Description  Specification  Actual  Comments 
  Bail Raise Relief(2)  7600 ± 690 kPa (1100 ± 100 psi)     
  Bail Lower Relief(3)  3900 ± 690 kPa (565 ± 100 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) At HIGH IDLE
(3) At HIGH IDLE

Hydraulic Fan and Brake System

Reference: Refer to Testing & Adjusting, UENR4608 for more details on the following tests.

Hydraulic Fan Speed

Reference: Refer to Testing & Adjusting, UENR4608, "Hydraulic Fan Speed - Test" for more detail on the following test.

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Table 20
Status(1)  Description  Specification  Actual  Comments 
  Minimum Fan Speed @ High Idle (LRC Machines)  650 ± 50 RPM     
  Maximum Fan Speed @ High Idle (LRC Machines)  1750 RPM     
  Minimum Fan Speed @ High Idle (HRC Machines)  650 ± 50 RPM     
  Maximum Fan Speed @ High Idle (HRC Machines)  1410 RPM     
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(1) N = Normal, M = Monitor, A = Action

Service Brake Pressure

Reference: Refer to Testing & Adjusting, UENR4608, "Service Brake System Pressure - Test" for more detail on the following test.

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Table 21
Status(1)  Description  Specification  Actual  Comments 
  Front brakes with brake pedal FULLY depressed  5862 ± 690 kPa (850 ± 100 psi)     
  Maximum front brake pressure within 5 seconds of releasing pedal  140 kPa (20 psi)     
  Rear Wheels with brake pedal FULLY depressed  5690 ± 690 kPa (825 ± 100 psi)     
  Maximum rear brake pressure within 5 seconds of releasing pedal  140 kPa (20 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Brake Accumulator Charging Valve

Reference: Refer to Testing & Adjusting, UENR4608, "Brake Accumulator Charging Valve - Test" for more detail on the following test.

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Table 22
Status(1)  Description  Specification  Actual  Comments 
  Cut- in Pressure  13800 ± 350 kPa (2000 ± 50 psi)     
  Cut-out Pressure  18000 ± 350 kPa (2610 ± 50 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Gear Pump (Brake Cooling) - Test

Reference: Refer to Testing & Adjusting, UENR4608, "Gear Pump (Brake Cooling) - Test" for more detail on the following test.

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Table 23
Status(1)  Description  Specification  Actual  Comments 
  Gear Pump (Brake Cooling) Pressure  Greater than 30 kPa (4 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Parking Brake Pressure

Reference: Refer to Testing & Adjusting, UENR4608, "Parking Brake - Test and Adjust" for more detail on the following test.

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Table 24
Status(1)  Description  Specification  Actual  Comments 
  Engine off with parking brake switch ON  500 kPa (73 psi)     
  Low idle with parking brake switch OFF  5735 ± 345 kPa (832 ± 50 psi)     
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(1) N = Normal, M = Monitor, A = Action

Power Train System

Relief Valve Pressure

Reference: Refer to Testing & Adjusting, UENR4608, "Relief Valve (Main) - Test and Adjust (Power Train)" for more detail on the following test.

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Table 25
Status(1)  Description  Specification  Actual  Comments 
  Low Idle  2827 kPa (410 psi) to 3103 kPa (450 psi)     
  High Idle  3034 kPa (440 psi) to 3241 kPa (470 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Transmission Lube Oil Test

Reference: Refer to Testing & Adjusting, UENR4608, "Transmission Lubrication Oil Pressure - Test" for more detail on the following test.

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Table 26
Status(1)  Description  Specification  Actual  Comments 
  Low Idle  5 kPa (0.73 psi)     
  High Idle  100 kPa (15 psi) to 275 kPa (40 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Transmission Clutch Pressure Test

Reference: Refer to Testing & Adjusting, UENR4608, "Transmission Clutch Pressure - Test" for more detail on the following test.

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Table 27
Status(1)  Description  Specification  Actual  Comments 
  Clutch 1  2965 ± 69 kPa (430 ± 10 psi)     
  Clutch 2  2068 ± 69 kPa (300 ± 10 psi)     
  Clutch 3  2068 ± 69 kPa (300 ± 10 psi)     
  Clutch 4  2068 ± 69 kPa (300 ± 10 psi)     
  Clutch 5  2585 ± 69 kPa (375 ± 10 psi)     
  Clutch 6  2965 ± 69 kPa (430 ± 10 psi)     
  Clutch 7  2965 ± 69 kPa (430 ± 10 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Torque Converter Inlet Oil Pressure

Reference: Refer to Testing & Adjusting, UENR4608, "Torque Converter Inlet Oil Pressure - Test" for more detail on the following test.

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Table 28
Status(1)  Description  Specification  Actual  Comments 
  Inlet Oil Pressure  930 ± 100 kPa (135 ± 15 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Torque Converter Outlet Pressure

Reference: Refer to Testing & Adjusting, UENR4608, "Torque Converter Outlet Relief Valve Pressure - Test and Adjust" for more detail on the following test.

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Table 29
Status(1)  Description  Specification  Actual  Comments 
  Outlet Relief Valve Pressure  275 kPa (40 psi) to 480 kPa (70 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

S.O.S.

Reference: Refer to Operation and Maintenance Manual, M0064346, "Maintenance Section" for more detail and port locations on the following S.O.S. service.

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Table 30
Status(1)  Description  Obtain  Comments 
  Engine Oil Sample  Every 250 hours   
  Hydraulic System Oil Sample  Every 250 hours   
  Transmission Oil Sample  Every 250 hours   
  Differential and Final Drive Oil Sample  Every 500 hours   
  Cooling System Coolant Sample (Level I)  Every 500 hours   
  Cooling System Coolant Sample (Level II)  Every 2000 hours   
Show/hide table
(1) N = Normal, M = Monitor, A = Action

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