Complete service repair manual for John Deere 344G and 444G 4WD Loader, with all the shop information to maintain, repair, and rebuild like professional mechanics.

John Deere 4WD Loader Model 344G and 444G workshop service & repair 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.
* 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.

TM1558 - John Deere 4WD Loader Model 344G and 444G Technical Manual - Repair.PDF

Total Pages: 559 pages
File Format: PDF (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English ...

MAIN SECTIONS
Foreword
   Help!! Help!! Help!! Help!!
   General Information
      Safety
      General Specifications
      Torque Values
      Fuels And Lubricants
   Wheels
      Powered Wheels And Fastenings
   Axles And Suspension Systems
      Removal And Installation
      Differential Or Bevel Drive
      Axle Shafts, Bearings And U-Joints
      Axle Shaft, Bearings And Reduction Gears
   Transmission
      Removal And Installation
      Controls Linkage
      Gears, Shafts, Bearings, And Power Shift Clutch
      Hydraulic System
   Engine
      Removal And Installation
   Engine Auxiliary Systems
      Cold Weather Starting Aids
      Cooling Systems
      Speed Controls
      Intake System
      External Fuel Supply Systems
   Damper Drive (Flex Coupling)
      Elements
   Steering System
      Secondary Steering
      Hydraulic System
   Service Brakes
      Active Elements
      Controls Linkage
      Hydraulic System
   Park Brake
      Active Elements
      Hydraulic System
   Electrical System
      Batteries, Support, And Cables
      Alternator, Regulator And Charging System Wiring
      Lighting System
      Wiring Harness And Switches
      System Controls
      Motors And Actuators
   Frame, Chassis Or Supporting Structure
      Frame Installation
      Chassis Weights
   Operator’s Station
      Removal And Installation
      Operator Enclosure
      Seat And Seat Belt
      Heating And Air Conditioning
   Main Hydraulic System (Hydraulic Reservoir)
      Removal And Installation
   Loader
      Bucket
      Controls Linkage
      Frames
      Hydraulic System
   Dealer Fabricated Tools

tm1558 - 344g and 444g loader repair

Table of Contents

Foreword

Help!! Help!! Help!! Help!!

Section 00: General Information

Group 0001: Safety

Handle Fluids Safely-Avoid Fires

Prevent Battery Explosions

Prepare for Emergencies

Prevent Acid Burns

Handle Chemical Products Safely

Avoid High-Pressure Fluids

Park Machine Safely

Support Machine Properly

Wear Protective Clothing

Work in Clean Area

Service Machines Safely

Work In Ventilated Area

Illuminate Work Area Safely

Replace Safety Signs

Use Proper Lifting Equipment

Remove Paint Before Welding or Heating

Avoid Heating Near Pressurized Fluid Lines

Keep ROPS Installed Properly

Service Tires Safely

Avoid Harmful Asbestos Dust

Practice Safe Maintenance

Use Proper Tools

Dispose of Waste Properly

Live With Safety

Group 0002: General Specifications

344G Loader

344G Loader Operating Information

Loader Specifications-344G

Drain And Refill Capacities-344G

444G Loader

444G Loader Operating Information

Loader Specifications-444G

Drain And Refill Capacities-444G

Group 0003: Torque Values

Hardware Torque Specifications

ROPS Torque Specifications

Metric Bolt and Cap Screw Torque Values

Additional Metric Cap Screw Torque Values

Unified Inch Bolt and Cap Screw Torque Values

Check Oil Lines And Fittings

Service Recommendations for 37° Flare and 30° Cone Seat Connectors

Service Recommendations for O-Ring Boss Fittings

Service Recommendations for Flat Face O-Ring Seal Fittings

Service Recommendations for Metric Series Four Bolt Flange Fitting

Service Recommendations For Inch Series Four Bolt Flange Fittings

Group 0004: Fuels And Lubricants

Fuel Specifications

Low Sulfur Diesel Fuel Conditioner

Storing Fuel

Do Not Use Galvanized Containers

Fuel Tank

Engine Oil

Power Shift (HI-LO) Transmission And Brake System Oil

Hydraulic/Hydrostatic System Oil

Differential Oil

Fuel Specifications

Alternative and Synthetic Lubricants

Mixing of Lubricants

Lubricant Storage

Engine Coolant

Section 01: Wheels

Group 0110: Powered Wheels And Fastenings

Service Equipment And Tools

Specifications

Remove Wheel

Remove And Install Tire

Install Wheel

Section 02: Axles And Suspension Systems

Group 0200: Removal And Installation

Service Equipment And Tools

Specifications

Remove And Install Front Axle And Differential

Remove And Install Rear Axle And Differential

Replace Rear Axle Oscillating Support Bushings

Group 0210: Differential Or Bevel Drive

Service Equipment And Tools

Other Material

Specifications

Remove Differential Case Cover

Remove Axle Housing

Remove Input Quill And Shaft

Exploded View Of Input Quill And Shaft

Disassemble And Assemble Input Quill And Shaft

Adjust Pinion Shaft

Adjust Cone Point

Install Input Quill And Shaft

Adjust Differential Backlash

Check Tooth Bearing Pattern

Remove Standard Differential

Disassemble Standard Differential

Remove And Install Bevel Gear

Exploded View Of Standard Differential

Install Standard Differential

Remove Differential Lock Differential

Disassemble Differential Lock Differential

Assemble Differential Lock Differential

Install Differential Lock Differential

Adjust Differential Preload

Install Input Quill And Shaft

Install Axle Housing

Install Cover

Group 0225: Axle Shafts, Bearings And U-Joints

Other Material

Specifications

Remove And Install Drive Shafts And U-Joint

Disassemble And Assemble Front Drive Shaft And Bearing Carrier

Disassemble And Assemble Center Drive Shaft

Disassemble And Assemble Rear Universal Joint

Group 0250: Axle Shaft, Bearings And Reduction Gears

Service Equipment And Tools

Other Material

Specifications

Remove Axle Housing

Planet Pinion Carrier And Axle Shaft-Cross Section

Planet Pinion Carrier And Axle Shaft-Exploded View

Disassemble Planet Pinion Carrier

Inspect Planet Pinion Components

Assemble Planet Pinion Carrier

Remove Axle Shaft To Disassemble Axle Housing

Inspect Axle Housing And Shaft

Disassemble Axle Housing

Assemble Axle Shaft And Housing

Install Axle Housing

Section 03: Transmission

Group 0300: Removal And Installation

Service Equipment And Tools

Other Material

Specifications

Remove And Install Hydrostatic Motor

Remove And Install HI-LO Transmission

Remove And Install Hydrostatic Pump

HST Start-Up Procedure

Flush Hydrostatic Motor Hoses And Hydrostatic Oil Cooler

Check HI-LO Transmission Oil Level

Group 0315: Controls Linkage

Other Material

Specifications

Front Axle Disconnect Cable Adjustment

Disassemble And Assemble Brake Pedal And Inching Pedal Linkage

Adjust Brake Pedal And Inching Pedal Linkage

Group 0350: Gears, Shafts, Bearings, And Power Shift Clutch

Service Equipment And Tools

Other Material

Specifications

Disassemble HI-LO Transmission

Assemble HO-LO Transmission

Remove And Install Front Axle Disconnect-If Equipped

Group 0360: Hydraulic System

Service Equipment And Tools

Other Material

Specifications

Remove And Install Hydrostatic Motor

Disassemble And Assemble Hydrostatic Motor

Motor Displacement Control Valve Exploded View

Disassemble And Assemble Flushing Valve

Remove And Install Hydrostatic Pump Displacement Control Valve (PDCV)

Remove And Install Acceleration Check Valve

Remove And Install Forward-Neutral-Reverse Solenoid Valve

Disassemble And Assemble Forward-Neutral-Reverse Solenoid Valve

Disassemble And Assemble Control Pressure Bypass Valve

Disassemble And Assemble Starting Point Valve

Remove And Install Control Pressure Regulating Orifice

Disassemble And Assemble Control Pressure Regulating Valve

Disassemble And Assemble Pressure Override Valve

Disassemble And Assemble Inching Orifice

Remove And Install High Pressure Manifold

Disassemble And Assemble Neutral Dump Valve

Disassemble And Assemble High Pressure Relief Valve

Remove And Install Neutral Charge Relief Valve

Remove And Install Charge Check Valves

Disassemble Hydrostatic Pump

Inspect Hydrostatic Pump

Assemble Hydrostatic Pump

Remove And Install Neutral Dump Solenoid Valve

Disassemble And Assemble Neutral Dump Solenoid Valve

Remove And Install HI-LO Transmission Solenoid Valve

Remove And Install HI-LO Transmission Control Valve

Disassemble And Assemble Transmission Control Valve

Remove And Install HI-LO Transmission/Brake Filter

Disassemble And Assemble HI-LO Transmission/Brake Filter

Remove And Install Hydrostatic Charge Filter

Remove And Install HST Charge Pump

Disassemble And Assemble HST Charge Pump

Section 04: Engine

Group 0400: Removal And Installation

4045 John Deere Engine-Use CTM8

Essential Tools

Other Material

Specifications

Remove And Install Engine

Remove And Install Oil Pan

Remove Fuel Injection Pump-DB4 (Retained Shaft)

Install Fuel Injection Pump-DB4 (Retained Shaft)

Bleed The Fuel System

Remove And Install Fuel Injection Nozzles

Remove And Install Turbocharger

Remove And Install Water Pump

Section 05: Engine Auxiliary Systems

Group 0505: Cold Weather Starting Aids

Other Material

Specifications

Remove And Install Starting Aid Solenoid And Nozzle

Remove And Install Engine Coolant Heater

Group 0510: Cooling Systems

Specifications

Remove And Install Fan Belts

Adjust Alternator Fan Belt Tension

Remove And Install Fan

Remove And Install Radiator

Group 0515: Speed Controls

Other Material

Specifications

Remove And Install Speed Control Linkage

Adjust Speed Control Linkage

Group 0520: Intake System

Remove And Install Air Cleaner

Group 0560: External Fuel Supply Systems

Remove And Install Fuel Tank

Remove And Install Final Fuel Filter

Disassemble And Assemble Final Fuel Filter

Remove And Install Primary Fuel Filter (Water Separator)

Disassemble And Assemble Primary Fuel Filter (Water Separator)

Section 07: Damper Drive (Flex Coupling)

Group 0752: Elements

Other Material

Specifications

Remove And Install Dampener Drive

Section 09: Steering System

Group 0930: Secondary Steering

Remove And Install Secondary Steering Pump, Motor, And Relay

Remove And Install Secondary Steering Inlet Manifold

Secondary Steering System

Group 0960: Hydraulic System

Essential Tools

Other Material

Specifications

Remove And Install Steering Valve

Disassemble Steering Valve

Assemble Steering Valve

Remove, Disassemble, Assemble, And Install Steering Column

Remove And Install Steering Cylinder

Disassemble And Assemble Steering Cylinder

Remove And Install Steering Cylinder Bushings And Seals

Remove And Install Priority Valve

Disassemble And Assemble Priority Valve

Section 10: Service Brakes

Group 1011: Active Elements

Specifications

Inspect Brakes

Remove And Install Brake Pressure Plate Disk

Inspect Brake Elements

Group 1015: Controls Linkage

Other Material

Specifications

Disassemble And Assemble Brake Pedal And Inching Pedal Linkage

Adjust Brake Pedal And Inching Pedal Linkage

Group 1060: Hydraulic System

Specifications

Remove And Install Brake Valve

Disassemble And Assemble Brake Valve

Remove And Install HI-LO Transmission/Brake Pump

Disassemble And Assemble HI-LO Transmission/Brake Pump

Remove And Install HI-LO Transmission/Brake Filter

Disassemble And Assemble HI-LO Transmission/Brake Filter

Remove And Install Brake Reservoir

Bleed Brake Hydraulic System

Section 11: Park Brake

Group 1111: Active Elements

Other Material

Specifications

Remove And Install Park Brake

Disassemble And Assemble Park Brake

Adjust Park Brake

Group 1160: Hydraulic System

Other Material

Specifications

Remove And Install Park Brake Valve

Disassemble And Assemble Park Brake Valve

Remove And Install Park Brake Cylinder

Disassemble And Assemble Park Brake Cylinder

Section 16: Electrical System

Group 1671: Batteries, Support, And Cables

Specifications

Avoid Battery Acid

Battery State Of Charge

Using Booster Batteries-24 Volt System

Charge Battery

Remove And Install Batteries

Group 1672: Alternator, Regulator And Charging System Wiring

Service Equipment And Tools

Specifications

Alternators And Starting Motors-Use CTM77

Remove And Install Alternator

Group 1673: Lighting System

Remove And Install Drive Lights

Disassemble And Assemble Drive Light

Remove And Install Front Turn Signal And Warning Lights

Disassemble And Assemble Front Turn Signal And Warning Lights

Remove And Install Brake And Tail Lights

Group 1674: Wiring Harness And Switches

Essential Tools

Front Console Electrical Component Identification

Side Console Electrical Component Identification

Rear Frame Electrical Component Identification

Engine Electrical Component Identification

Cab Electrical Component Identification

Front Frame/Center Pin Electrical Component Identification

Adjust Brake Light Switch

Replace Fuses

Replace Relays

Replace DEUTSCH DEUTSCH is a trademark of the Deutsch Co. Connectors

Install DEUTSCHDEUTSCH is a trademark of the Deutsch Co. Contact

Replace WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Connector

Install WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Contact

Remove Connector Body From Blade Terminals

Remove Blade Terminals From Fuse Block

Replace Sealed Connectors

Group 1675: System Controls

Specifications

Adjust Return-To-Dig Switch

Adjust Boom Height Kickout Switch

Group 1677: Motors And Actuators

John Deere Starting Motor-Use CTM77

Specifications

Remove And Install Starting Motor

Section 17: Frame, Chassis Or Supporting Structure

Group 1740: Frame Installation

Specifications

Welding Repair Of Major Structures

Separate Frames

Group 1749: Chassis Weights

Specifications

Remove And Install Counterweight

Section 18: Operator’s Station

Group 1800: Removal And Installation

Specifications

Remove And Install Cab Or Canopy

Group 1810: Operator Enclosure

Remove And Install Cab Door

Remove And Install Cab Window Panes And Molding

Remove And Install Door Latch

Remove And Install Window Latch

Remove And Install Front Wiper And Motor

Remove And Install Rear Wiper And Motor

Group 1821: Seat And Seat Belt

Specifications

Disassemble And Assemble Seat

Disassemble And Assemble Seat Belt

Group 1830: Heating And Air Conditioning

Remove And Install Blower Motor

Disassemble And Assemble Blower Motor

Remove And Install Heater Core

Remove And Install Heater

Remove And Install Cab Heater Hoses

Section 21: Main Hydraulic System (Hydraulic Reservoir)

Group 2100: Removal And Installation

Specifications

Remove And Install Hydraulic/Hydrostatic Reservoir

Disassemble And Assemble Hydraulic/Hydrostatic Reservoir

Section 31: Loader

Group 3102: Bucket

Specifications

Remove And Install Bucket Teeth

Remove And Install Bucket

Replace Welded Bucket Cutting Edges

Remove And Install Cutting Edges-Multi-Purpose Bucket

Repair Cracked Cutting Edge

Group 3115: Controls Linkage

Remove And Install Control Valve Linkage

Group 3140: Frames

Service Equipment And Tools

Other Material

Specifications

Remove And Install Bucket Tilt Linkage

Remove And Install Bucket Linkage Seals And Bushings

Remove And Install Boom Bushings

Group 3160: Hydraulic System

Essential Tools

Service Equipment And Tools

Other Material

Specifications

Remove And Install Steering And Loader Pump

Disassemble And Assemble Steering And Loader Pump

Remove And Install Loader Control Valve

Disassemble And Assemble Loader Control Valve

Disassemble And Assemble Bucket Valve Section With Return-To-Dig

Disassemble And Assemble Boom Valve Section

Disassemble And Assemble Auxiliary Valve Section

Disassemble And Assemble System And Circuit Relief Valve

Remove And Install Bucket Cylinder

Remove And Install Boom Cylinder

Remove And Install Bucket Or Boom Cylinder Bushings And Seals

Disassemble And Assemble Boom Or Bucket Cylinder

Section 99: Dealer Fabricated Tools

Group 9900: Dealer Fabricated Tools

DF1062 Protective Template

DF1057-Axle Adjusting Tool

JT38003 Rolling Drag Torque Bar

DFT1134 Spool Holding Fixture

DFT1135 Ball Thrusting Cap

DFT1136 Detent Cap Holder

John Deere 4WD Loader Model 344G and 444G Repair Service Manual (TM1558)