Complete Diagnostics and Test manual with Electrical Wiring Diagrams for John Deere 315SK (T3/S3A) Backhoe Loader (SN: D229820-) , with all the shop information to maintain, diagnose, and rebuild like professional mechanics.

John Deere 315SK (T3/S3A) Backhoe Loader workshop diagnostics manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.

TM12471 - John Deere 315SK (T3_S3A) Backhoe Loader Service Manual (Operation and Test).pdf
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Models: 315SK (PIN: 1T0315SK**D229820-; 1T0315SK**C219607-)
Total Pages: 1,712 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English French Russian Spanish

MAIN SECTIONS
Foreword
   Manual Identification-READ THIS FIRST!
   General Information
      Safety
   Diagnostics
      Engine Control Unit (ECU) Diagnostic Trouble Codes
      Standard Display Monitor (SDM) Diagnostic Trouble Codes
      Transmission Control Unit (TCU) Diagnostic Trouble Codes
      Vehicle Control Unit (VCU) Diagnostic Trouble Codes
      Auxiliary Valve Control (AVC) Diagnostic Trouble Codes
      Sealed Switch Module (SSM) Diagnostic Trouble Codes
   Operational Checkout Procedure
      Operational Checkout Procedure
   Engine
      Theory of Operation
      Diagnostic Information
      Adjustments
      Tests
   Electrical System
      System Information
      System Diagrams
      Sub-System Diagnostics
      Monitor Operation
      References
   Power Train
      Theory of Operation
      Diagnostic Information
      Adjustments
      Tests
   Hydraulic System
      Theory of Operation
      Diagnostic Information
      Adjustments
      Tests
   Heating and Air Conditioning
      Theory of Operation
      Diagnostic Information
      Tests

tm12471 - 315SK Backhoe Loader

Table of Contents

Foreword

Manual Identification—READ THIS FIRST!

Section 9000: General Information

Group 01: Safety

Recognize Safety Information

Follow Safety Instructions

Operate Only If Qualified

Wear Protective Equipment

Avoid Unauthorized Machine Modifications

Inspect Machine

Stay Clear of Moving Parts

Avoid High-Pressure Oils

Avoid High-Pressure Fluids

Work In Ventilated Area

Prevent Fires

Prevent Battery Explosions

Handle Chemical Products Safely

Decommissioning — Proper Recycling and Disposal of Fluids and Components

Prepare for Emergencies

Use Steps and Handholds Correctly

Start Only From Operator's Seat

Use and Maintain Seat Belt

Prevent Unintended Machine Movement

Prevent Unintended Machine Movement—If Equipped With Pilot Controls

Avoid Work Site Hazards

Keep Riders Off Machine

Avoid Backover Accidents

Avoid Machine Tipover

Add and Operate Attachments Safely

Use Special Care When Operating

Operating or Traveling On Public Roads

Inspect and Maintain ROPS

Park and Prepare for Service Safely

Service Cooling System Safely

Remove Paint Before Welding or Heating

Make Welding Repairs Safely

Drive Metal Pins Safely

Service Tires Safely

Section 9001: Diagnostics

Group 10: Engine Control Unit (ECU) Diagnostic Trouble Codes

Engine Control Unit (ECU) Diagnostic Trouble Codes

000029.03 - Hand Throttle

000029.04 - Hand Throttle

000029.14 - Hand Throttle

000091.03 - Foot Throttle

000091.04 - Foot Throttle

000091.14 - Foot Throttle

000107.00 - Engine Air Filter

000190.00 - Engine Speed

000190.16 - Engine Speed

000237.31 - Vehicle ID Number

000628.12 - Memory Error

001075.05 - Fuel Pump Control

001075.06 - Fuel Pump Control

001321.05 - Starter Relay

001321.06 - Starter Relay

001321.16 - Starter Relay

002003.09 - No CAN From TCU

002047.09 - Can Communication Lost with VCU

002071.09 - No CAN From VCU

523702.09 - Flex Power Message Missing

Group 20: Standard Display Monitor (SDM) Diagnostic Trouble Codes

Standard Display Monitor (SDM) Diagnostic Trouble Codes

000096.03 - Fuel Level Sensor

000096.04 - Fuel Level Sensor

000168.03 - Battery Voltage

000168.04 - Battery Voltage

000234.02 - Software Incorrect

000237.02 - VIN Mismatch

000237.13 - VIN Mismatch

000237.31 - VIN Missing

000628.12 - Memory Error

000629.12 - Controller Fault

000920.12 - Alarm Output

001196.11 - Antitheft

002000.09 - No CAN from ECU

002003.09 - No CAN from TCU

002071.09 - No CAN from VCU

002141.09 - No CAN from SSM

002228.09 - No CAN from HVC

002251.09 - No CAN from MTG

003509.03 - Sensor Supply 1

003509.04 - Sensor Supply 1

524082.07 - Display Buttons

Group 30: Transmission Control Unit (TCU) Diagnostic Trouble Codes

Transmission Control Unit (TCU) Diagnostic Trouble Codes

000070.14 - Park Brake

000177.00 - Trans Oil Temp

000177.04 - Trans Oil Temp

000191.00 - Transmission Speed

000191.03 - Transmission Speed

000191.04 - Transmission Speed

000191.16 - Transmission Speed

000525.02 - Requested Gear

000525.03 - Requested Gear

000525.04 - Requested Gear

000525.05 - Requested Gear

000604.04 - TCL Neutral SW

000617.07 - Park Brake Circuit

000618.07 - Park Brake Circuit

000629.12 - Controller Fault

000734.03 - Y1 Solenoid

000734.04 - Y1 Solenoid

000734.05 - Y1 Solenoid

000734.06 - Y1 Solenoid

000735.03 - Y2 Solenoid

000735.04 - Y2 Solenoid

000735.05 - Y2 Solenoid

000735.06 - Y2 Solenoid

000736.03 - Y3 Solenoid

000736.05 - Y3 Solenoid

000736.06 - Y3 Solenoid

000737.03 - Y4 Solenoid

000737.05 - Y4 Solenoid

000737.06 - Y4 Solenoid

000738.03 - Y5 Solenoid

000738.05 - Y5 Solenoid

000738.06 - Y5 Solenoid

000739.03 - Y6 Solenoid

000739.05 - Y6 Solenoid

000739.06 - Y6 Solenoid

000746.03 - Differential Lock

000746.05 - Differential Lock

000746.06 - Differential Lock

000746.31 - Differential Lock

000767.05 - TCL Reverse SW

000880.03 - Brake Lights

000880.05 - Brake Lights

000880.06 - Brake Lights

000903.05 - TCL Forward SW

001045.04 - Brake Light SW

002000.09 - No CAN from ECU

002023.09 - No CAN From SDM

002034.09 - No CAN From AVC

002071.09 - No CAN From VCU

002213.09 - No CAN From JSR

002392.03 - Brake Lights

002392.05 - Backup Lights

002392.06 - Backup Lights

002612.03 - MFWD Solenoid

002612.05 - MFWD Solenoid

002612.06 - MFWD Solenoid

004312.02 - TCL Selector

004312.03 - TCL Selector

004312.05 - TCL Selector

004312.06 - TCL Direction Driver

522379.03 - Park Brake

522379.04 - Park Brake

522379.05 - Park Brake

522379.06 - Park Brake

522382.03 - Reverse Alarm

522382.06 - Reverse Alarm

522405.03 - PB Pressure Switch

523689.04 - Diff Lock Switch

523689.07 - Diff Lock Switch

523702.07 - Flexpower

523702.08 - Flexpower

523702.09 - Flexpower

523702.10 - Flexpower

523769.07 - MFWD Switch

524172.03 - Clutch Disconnect

524172.04 - Clutch Disconnect

524172.07 - Clutch Disconnect

524172.09 - Clutch Disconnect

Group 40: Vehicle Control Unit (VCU) Diagnostic Trouble Codes

Vehicle Control Unit (VCU) Diagnostic Trouble Codes

000168.03 - Battery Voltage

000168.04 - Battery Voltage

000234.02 - Software Incorrect

000237.02 - VIN Mismatch

000237.13 - VIN Mismatch

000237.31 - VIN Missing

000628.12 - Memory Error

000629.12 - Controller Fault

000677.03 - Start Relay

000677.05 - Start Relay

000677.06 - Start Relay

001237.31 - Engine Shutdown

001321.16 - Starter Relay

001638.00 - Hyd Temp Sensor

001638.04 - Hyd Temp Sensor

001638.16 - Hyd Temp Sensor

001713.00 - Hyd Oil Restriction

001762.03 - Hydraulic Pressure

001762.04 - Hydraulic Pressure

002141.09 - No CAN from SSM

002142.09 - No CAN from SSM

002228.09 - No CAN from HVC

002228.12 - EH Watchdog

002350.03 - Drive Lights

002350.05 - Drive Lights

002350.06 - Drive Lights

002354.03 - Front Work Lights

002354.05 - Front Work Lights

002354.06 - Front Work Lights

002356.03 - Front Work Lights

002356.05 - Front Work Lights

002356.06 - Front Work Lights

002360.03 - Rear Work Lights

002360.05 - Rear Work Lights

002360.06 - Rear Work Lights

002362.03 - Rear Work Lights

002362.05 - Rear Work Lights

002362.06 - Rear Work Lights

002366.03 - Rear Work Lights

002366.05 - Side Work Lights

002366.06 - Side Work Lights

002368.03 - Left Flasher

002368.05 - Left Flasher

002368.06 - Left Flasher

002370.03 - Right Flasher

002370.05 - Right Flasher

002370.06 - Right Flasher

002378.03 - Marker Light

002378.05 - Marker Light

002378.06 - Marker Light

0002641.03 - EH Horn

0002641.05 - EH Horn

0002641.06 - EH Horn

002875.03 - Hazard Wakeup

002876.07 - Turn Signal Switch

003416.03 - Right Door Sw

003416.04 - Right Door Sw

003509.03 - Sensor Supply 1

003509.04 - Sensor Supply 1

003510.03 - Sensor Supply 2

003510.04 - Sensor Supply 2

003511.03 - Sensor Supply 3

003511.04 - Sensor Supply 3

003997.03 - Accessory Relay

003997.05 - Accessory Relay

003997.06 - Accessory Relay

520416.03 - Valve Power

520416.04 - Valve Power

520416.05 - Valve Power

520546.03 - Pilot Enable Switch

520546.07 - Pilot Enable Switch

520688.03 - Pilot Enable Driver

520688.05 - Pilot Enable Driver

520688.06 - Pilot Enable Driver

520696.03 - Pattern Select Driver

520696.05 - Pattern Select Driver

520696.06 - Pattern Select Driver

520697.03 - Loader Coupler Press

520697.05 - Loader Coupler Press

520697.06 - Loader Coupler Press

520708.03 - HVC Valve Power

520708.06 - HVC Valve Power

520713.03 - Seat Position

520713.04 - Seat Position

520713.07 - Seat Position

520713.12 - Seat Position

520713.13 - Seat Position

520714.06 - Bucket Level LEDs

522426.03 - Rear Wiper Park

522426.04 - Rear Wiper Park

522427.03 - Front Wiper Park

522427.04 - Front Wiper Park

522433.03 - Rear Wiper

522433.05 - Rear Wiper

522433.06 - Rear Wiper

522434.03 - Front Wiper Low

522434.05 - Front Wiper Low

522434.06 - Front Wiper Low

522435.03 - Front Wiper Hi

522435.05 - Front Wiper Hi

522435.06 - Front Wiper Hi

522438.03 - Loader Coupler

522438.05 - Loader Coupler

522438.06 - Loader Coupler

522797.03 - Front Washer Pump

522797.05 - Front Washer Pump

522797.06 - Front Washer Pump

523597.03 - Beacon Light Driver

523597.05 - Beacon Light Driver

523597.06 - Beacon Light Driver

523911.03 - Pump Control

523911.04 - Pump Control

523911.05 - Pump Control

523911.06 - Pump Control

523911.13 - Pump Control

523948.03 - Ride Control

523948.05 - Ride Control

523948.06 - Ride Control

Group 50: Auxiliary Valve Control (AVC) Diagnostic Trouble Codes

Auxiliary Valve Controller (AVC) Diagnostic Trouble Codes

000168.03 - Battery Voltage

000168.04 - Battery Voltage

000234.02 - Software Incorrect

000237.02 - VIN Mismatch

000237.13 - VIN Mismatch

000237.31 - VIN Missing

000629.12 - Controller Fault

002664.03 - Ldr Aux Roller

002664.04 - Ldr Aux Roller

002664.07 - Ldr Aux Roller

002664.12 - Ldr Aux Roller

002724.07 - Left Joystick

003509.03 - Sensor Supply 1

003509.04 - Sensor Supply 1

520542.03 - CAN Bus

520543.04 - CAN Bus

523404.00 - Loader Aux Press

523404.01 - Loader Aux Press

523571.04 - Valve Power 2

523769.03 - MFWD Switch

523769.04 - MFWD Switch

523938.03 - Loader Aux Sol A

523938.04 - Loader Aux Sol A

523938.05 - Loader Aux Sol A

523938.06 - Loader Aux Sol A

523939.03 - Loader Aux Sol B

523939.04 - Loader Aux Sol B

523939.05 - Loader Aux Sol B

523939.06 - Loader Aux Sol B

524010.03 - Selective Flow

524010.04 - Selective Flow

524010.05 - Selective Flow

524010.06 - Selective Flow

524204.03 - Loader Aux Switch

524204.05 - Loader Aux Switch

Group 60: Sealed Switch Module (SSM) (OC4) Diagnostic Trouble Codes

Sealed Switch Module (SSM) Diagnostic Trouble Codes

000629.12 - Controller Fault

002634.04 - Ignition Relay

002634.05 - Ignition Relay

523850.04 - SSM Button 15

523850.09 - SSM Button 15

523852.04 - SSM Button 14

523852.09 - SSM Button 14

523854.04 - SSM Button 13

523854.09 - SSM Button 13

523855.04 - SSM Button 12

523855.09 - SSM Button 12

523856.04 - SSM Button 11

523856.09 - SSM Button 11

523857.04 - SSM Button 10

523857.09 - SSM Button 10

523858.04 - SSM Button 9

523858.09 - SSM Button 9

523860.04 - SSM Button 8

523860.09 - SSM Button 8

523861.04 - SSM Button 7

523861.09 - SSM Button 7

523862.04 - SSM Button 6

523862.09 - SSM Button 6

523863.04 - SSM Button 5

523863.09 - SSM Button 5

523864.04 - SSM Button 4

523864.09 - SSM Button 4

523865.04 - SSM Button 3

523865.09 - SSM Button 3

523867.04 - SSM Button 2

523867.09 - SSM Button 2

523868.04 - SSM Button 1

523868.09 - SSM Button 1

Section 9005: Operational Checkout Procedure

Group 10: Operational Checkout Procedure

Operational Checkout Procedure

Section 9010: Engine

Group 05: Theory of Operation

John Deere Engine Operation

Engine Cooling System Operation

Cold Start Aid System Operation—If Equipped

Group 15: Diagnostic Information

John Deere Engine Operation

Engine Identification

Engine Cooling System Component Location

Engine Fuel System Component Location

Engine Intake and Exhaust Component Location

Group 20: Adjustments

John Deere Engine Operation

Group 25: Tests

John Deere Engine Operation

Fluid Sampling Procedure—If Equipped

Engine Speed Check

Air in Fuel Test

Engine Thermostat Test

Thermal Bypass Valve Test

Intake Manifold Pressure—Turbocharger Boost

Section 9015: Electrical System

Group 05: System Information

Electrical Diagram Information

Electrical Schematic Symbols

Group 10: System Diagrams

Fuse and Relay Location and Specifications

System Functional Schematic, Wiring Diagram, and Component Location Legend

System Functional Schematic and Section Legend

Engine Harness (W10) Component Location

Engine Harness (W10) Wiring Diagram

Transmission Harness (W13) Component Location

Transmission Harness (W13) Wiring Diagram

Cab Harness (W14) Component Location

Cab Harness (W14) Wiring Diagram

Roof Harness (W17) Component Location

Roof Harness (W17) Wiring Diagram

Radio Harness (W18) Component Location

Radio Harness (W18) Wiring Diagram

Heater and Air Conditioner Harness (W19) Component Location

Heater and Air Conditioner Harness (W19) Wiring Diagram

Pilot Control, Selective Flow and Ride Control Harness (W20) Component Location

Pilot Control, Selective Flow and Ride Control Harness (W20) Wiring Diagram

Selective Flow and Ride Control Harness (W21) Component Location

Selective Flow and Ride Control Harness (W21) Wiring Diagram

Fuel Lift Pump Relay Harness (W22) Component Location

Fuel Lift Pump Relay Harness (W22) Wiring Diagram

Start Aid Switch Harness (W24) Component Location

Start Aid Switch Harness (W24) Wiring Diagram

Ride Control Solenoid Harness (W27) Component Location

Ride Control Solenoid Harness (W27) Wiring Diagram

Selective Flow Solenoid Harness (W28) Component Location

Selective Flow Solenoid Harness (W28) Wiring Diagram

Loader Auxiliary Solenoid Harness (W29) Component Location

Loader Auxiliary Solenoid Harness (W29) Wiring Diagram

Pilot Enable Pattern Select Valve Harness (W30) Component Location

Pilot Enable Pattern Select Valve Harness (W30) Wiring Diagram

Pilot Enable Switch Harness (W31) Component Location

Pilot Enable Switch Harness (W31) Wiring Diagram

Return-to-Dig Harness (W32) Component Location

Return-to-Dig Harness (W32) Wiring Diagram

Boom Lock/Sideshift Harness (W37) Component Location—(S.N. —232969)

Boom Lock/Sideshift Harness (W37) Wiring Diagram—(S.N. —232969)

Rear Frame Harness (W38) Component Location

Rear Frame Harness (W38) Wiring Diagram

Air Conditioner Compressor Clutch Harness (W39) Component Location

Air Conditioner Compressor Clutch Harness (W39) Wiring Diagram

Blower Mode Door Motor Harness (W40) Component Location

Blower Mode Door Motor Harness (W40) Wiring Diagram

Sideshift/Boom Lock Switch Harness (W42) Component Location—(S.N. 235590— )

Sideshift/Boom Lock Switch Harness (W42) Wiring Diagram—(S.N. 235590— )

Modular Telematics Gateway (MTG) Harness (W6002) Component Location

Modular Telematics Gateway (MTG) Harness (W6002) Wiring Diagram

Satellite (SAT) Harness (W6003) Component Location

Satellite (SAT) Harness (W6003) Wiring Diagram

Group 15: Sub-System Diagnostics

Start and Charge Circuit Theory of Operation

Controller Area Network (CAN) Circuit Theory of Operation

Engine Control Unit (ECU) Circuit Theory of Operation

Vehicle Control Unit (VCU) Circuit Theory of Operation

Transmission Control Circuit Theory of Operation

Hydraulic System Circuit Theory of Operation

Horn, Lights, and Beacon Circuit Theory of Operation

Wiper and Washer Circuit Theory of Operation

Standard Display Monitor (SDM) Circuit Theory of Operation

Group 16: Monitor Operation

Standard Display Monitor (SDM)—Service Menu

Standard Display Monitor (SDM)—Clear Codes

Standard Display Monitor (SDM)—Diagnostics

Standard Display Monitor (SDM)—Main Menu Visible or Hidden

Standard Display Monitor (SDM)—Restore Monitor Defaults

Standard Display Monitor (SDM)—Machine Options

Standard Display Monitor (SDM)—Setting Hour Meter

Security System Enable-Disable

Security System Configuration

Security System Operation

Group 20: References

Electrical Component Specifications

Service ADVISOR™ Connection Procedure

JDLink™ Connection Procedure

Reading Diagnostic Trouble Codes (DTCs)

Diagnostic Trouble Code (DTC) Monitor Messages

Intermittent Diagnostic Trouble Code (DTC) Diagnostics

Controller Area Network (CAN) Circuit Test

Controller Area Network (CAN) Resistor Test

Alternator Test

Wire Harness Test

Sensor Circuit Test

Crank Position Sensor Test

Transmission Control Circuit Test

Transmission Solenoid Circuit Test

Transmission Control Lever (TCL) Test

Transmission Solenoid Check

Throttle Position Sensor Test

Engine Speed Control Pedal Test

Vehicle Control Unit (VCU) Output Test

Seat Position Sensor Remove and Install

Controller Remove and Install

Section 9020: Power Train

Group 05: Theory of Operation

Power Train Overview

Transmission Pump Operation

Torque Converter Operation

Transmission Filter Operation

Clutch Modulation Operation

Clutch Pack Operation

Transmission Gear Flow

Transmission Clutch Engagement and Solenoid Activation

Differential Operation

Differential Lock Operation

Mechanical Front Wheel Drive (MFWD) Operation—If Equipped

Mechanical Front Wheel Drive (MFWD) Differential Operation—If Equipped

Park Brake Operation

Service Brake Operation

Power Boost Service Brake Valve Operation

Group 15: Diagnostic Information

Hydraulic Circuit—Symbols

Power Train Component Location

Power Train Schematic—Neutral

Power Train Schematic—First Forward

Diagnose Transmission Malfunctions

Transmission Slippage

Machine Lacks Power or Moves Slow

Transmission Overheats

Excessive Power Train Noise

No Power to Mechanical Front Wheel Drive (MFWD)

No Power to One Wheel of Mechanical Front Wheel Drive (MFWD)

No Differential Lock Operation

Differential Lock Slips or Chatters When Engaged

Differential Lock Will Not Release

Rear Axle Overfilled With Oil

Poor Service Brakes

Brake Pedal Hard to Push

Service Brakes Will Not Release

Service Brakes Chatter or Noisy

Park Brake Will Not Hold

Park Brake Will Not Release

Group 20: Adjustments

Mechanical Park Brake Release—Towing

Service Brake Pedal Adjustment

Service Brake Bleed Procedure

Tracking Angle Check and Adjust

Toe-In Check and Adjust

Steering Angle Check and Adjust

Group 25: Tests

Transmission Oil Warm-Up Procedure

Transmission Oil Sampling Procedure—If Equipped

Transmission Overall Test Connections, Ports, and Locations

Torque Converter Stall Speed Test

Power Boost Service Brake Valve Leakage Test

Torque Converter Inlet Pressure Test

Park Brake Release Pressure Test

Transmission System Pressure Test

Service Brake Boost Pressure Test

Clutch Pressure Test

Differential Lock Pressure Test

Mechanical Front Wheel Drive (MFWD) Pressure Test

Cooler In and Cooler Out Pressure Test

Solenoid Circuit Leakage Test

Transmission Pump Flow Test

Section 9025: Hydraulic System

Group 05: Theory of Operation

Hydraulic System Operation

Hydraulic Pump Operation

Unloading Valve Operation

Hydraulic Filter Operation

Steering Valve Operation

Ride Control Operation—If Equipped

System Relief Valve Operation

Circuit Relief Valve without Anticavitation—Loader and Backhoe

Circuit Relief Valve with Anticavitation—Backhoe Swing, Boom Lower

Circuit Relief Valve with Anticavitation—Backhoe Bucket Curl and Loader Bucket Dump

Backhoe Control Valve Operation

Pilot Control Valve Operation—If Equipped

Pilot Enable and Pattern Select Valve Operation—If Equipped

Loader and Stabilizer Control Valve Operation

Sideshift Lock Solenoid Valve—(S.N. —232969)

Sideshift and Boom Lock (SBL) Solenoid Valve Operation—(S.N. 235590— )

Group 15: Diagnostic Information

Hydraulic System Schematic

Hydraulic System Component Location

Slow Steering Hydraulics

No Steering Hydraulics, Loader Hydraulics OK

Hard Steering, Loader Hydraulics OK

Steering Valve Does Not Return to Neutral

No Response When Steering Wheel is Turned, Loader Hydraulics OK

Machine Turns in Opposite Direction

Excessive Vibration of the Steering Wheel

Machine Turns When Steering Valve is in Neutral

Steering Wheel Kickback

Excessive Steering Wheel Turns to Steer Machine

Erratic (“Spongy”) Steering

Steering Wheel "Locks" Up

Poor Centering of Steering Wheel (Wheels Continue to Move After Steering Wheel is Stopped)

Steering Wheel or Front Wheels Slowly Turn by Themselves When Using Backhoe or Loader

Steering Wheel Turns Apply Rear Axle Service Brakes

Steering Wheel Turns Freely With No Resistance or Action On Steered Wheels

Steering Wheel Turns With Slight Resistance and No Action On Steered Wheels

Wander—Machine Will Not Stay in a Straight Line

No Loader or Steering Hydraulics

No Loader Hydraulics

Low Loader Hydraulic Power

Low Hydraulic Power

Engine Pulls Down Excessively During Loader Operation

Engine Pulls Down Excessively During Backhoe Operation

Slow Hydraulic Functions

Backhoe Operates Slowly in One Function

Loader Operates Slowly in One Function

No Backhoe Power in One Function

No Loader Power in One Function

No Stabilizer Hydraulics

Slow Loader and Backhoe Hydraulics

Low Hydraulic Power (Low Hydraulic Pressure)

Hydraulic Function Makes "Chattering" Noise

Functions Drift

Control Valve Sticks or Works Hard

Hydraulic Oil Overheats

Foaming Oil

Hydraulic Pump Leaking

Excessive Pump Noise

Group 20: Adjustments

Backhoe Control Lever to Valve Linkage (Two Lever) Adjustment

Auxiliary Selective Flow Control Valve Adjustment—If Equipped

Pilot Control Pressure Adjustment

Pilot Enable and Pattern Select Valve Accumulator Discharge Procedure

Loader Bucket Self-Leveling Linkage and Return-To-Dig Switch Adjustment

Loader and Stabilizer Lever Adjustment

Ride Control Accumulator Charge Procedure

Ride Control Accumulator Charge Check Procedure

Ride Control Accumulator Hydraulic Pressure Release Procedure

Group 25: Tests

JT02156A Digital Pressure and Temperature Analyzer Kit Installation

Hydraulic Oil Warm-up Procedure

Fluid Sampling Procedure—If Equipped

Hydraulic Oil Sampling Procedure—If Equipped

Hydraulic Circuit Pressure Release

Hydraulic Pump Flow Test

System Relief Valve Pressure Test

Hydraulic Pump Unloading Relief Valve Pressure Test

Pilot Control Pressure Test

Pilot Control Accumulator Charge Pressure Test

Hydraulic Oil Cooler Restriction Test

Circuit Relief Valve Test—With Remote Pump

Steering System Leakage Test

Steering Cylinder Leakage Test

Function Drift Test

Hydraulic Cylinder Leakage Test

Loader and Stabilizer Control Valve Lockout Leakage Test

Sideshift Lock Solenoid Valve Leakage Test—(S.N. —232969)

Section 9031: Heating and Air Conditioning

Group 05: Theory of Operation

Air Conditioning System Cycle Of Operation

Group 15: Diagnostic Information

Air Conditioning and Heater System Component Location

Air Conditioning System Does Not Operate

Air Conditioner Does Not Cool Interior of Cab

Air Conditioner Runs Constantly, Too Cold

Heater System Does Not Operate

Heater Does Not Warm Interior of Cab

Interior Windows Continue to Fog

Group 25: Tests

Refrigerant Cautions and Proper Handling

R134a Refrigerant Cautions

R134a Oil Charge Capacity

R134a Refrigerant Charge Capacity

Air Conditioner and Heater Operational Checks

Air Conditioner Compressor Clutch Test

Air Conditioner High/Low Pressure Switch Test

Air Conditioner Freeze Control Switch Test

R134a Air Conditioning System Test

Operating Pressure Diagnostic Chart

Expansion Valve Test

Blower Motor Speed Switch Test

Blower Motor Resistor Test

Blower Motor Test

Air Conditioning Mode Switch Test

Air Conditioning System Leak Test

Refrigerant Hoses and Tubing Inspection

John Deere 315SK (T3/S3A) Backhoe Loader Operation and Test Service Manual (TM12471)