Case 621B 721B Loader Workshop Repair Service Manual PDF 6T-590 6T-830 Engines - MCS621721BOPES.zip

7-60064 - 621B, 721B Loaders Service Manual.pdf

This is a full workshop repair guide containing Electrical Wiring Diagrams for the Case 621B and 721B Loaders, packed with the dealer-level details needed to keep, troubleshoot, and fix these machines just like trained service technicians do.

Case 621B, 721B Loaders 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.

* 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.

...

Total Pages: 1,860 pages

File Format: PDF (bookmarked, ToC, Searchable, Printable, high quality)

Language: English

621B, 721B Loaders Service Manual.pdf

621 B 6T-590; 721 B 6T-830

Case 621B 721B loader

621B 6T-590 Engine

721B 6T-830 Engine

MAIN SECTIONS

General

Loctite Product Chart

Standard Torque Specifications

Fluids and Lubricants

Engines

Engine Removal and Installation and Radiator Removal and Installation – 621B

Engine Removal and Installation and Radiator Removal and Installation – 721B

Stall Tests

621B 6T-590 Engine

Specification Details

Cylinder Head and Valve Train

Cylinder Block – Crankshaft, Pistons, Rods, Sleeves, Camshaft,

Bearings, Seals, and Flywheel

Lubrication System

Cooling System

Turbocharger

721B 6T-830 Engine

Specification Details

Cylinder Head and Valve Train

Cylinder Block – Crankshaft, Pistons, Rods, Sleeves, Camshaft,

Bearings, Seals, and Flywheel

Lubrication System

Cooling System

Turbocharger

Turbocharger Failure Analysis

Fuel System

621B 6T-590 Engine

Fuel System and Filters

Fuel Injection Pump and Drive Gear

Fuel Injectors

721B 6T-830 Engine

Fuel System and Filters

Fuel Injection Pump and Drive Gear

Fuel Injectors

Description

Electrical

Removal and Installation of Starter and Alternator

Electrical Schematics, Troubleshooting and

Using Booster Batteries to Start the Engine

Electrical Schematics and Troubleshooting – Units with Auto Shift Transmission

Starter and Starter Solenoid – Nippondenso – 621B

Starter and Starter Solenoid – Nippondenso – 721B

Batteries

Instrument Cluster and Gauges

65 Ampere Alternator – Bosch

Steering

Removal and Installation of Steering Components

Steering Specifications and Troubleshooting

Steering Control Valve

Flow Control Valve

Steering Cylinder

Center Pivot

Auxiliary Steering Motor and Pump

Power Train

Removal and Installation of Power Train Components

Transmission Specifications, Schematic, and Troubleshooting – Units Without Auto

Shift Transmission

Transmission Specifications, Schematic, and Troubleshooting – Units With Auto Shift

Transmission

Transmission Repair – 621B (4WG150)

Transmission Repair – 721B (4WG180)

Front and Rear Axle Repair

Drive Shaft, Center Bearing and Universal Joints

Wheels and Tires

Transmission Control Valve – Units Without Auto Shift Transmission

Transmission Control Valve – Units With Auto Shift Transmission

Brakes

Removal and installation of Brake Components

Hydraulic Brake Troubleshooting

Brake Pump

Brake Accumulators

Brake Actuator Valve

Brake Accumulator Valve

Parking Brake

NOTE: For parking brake and brake pedal adjustments, see Section 9009.

Hydraulics

Removal and Installation of Hydraulic Components

Hydraulic Specifications, Schematics. Troubleshooting and Pressure Checks

Cleaning the Hydraulic System

Hydraulic Pump

Loader Control Valve

Cylinders

Coupler Lock Valve • XT Loader

Remote Control Valves

Pressure Reductng’Sequence Valve

Chassis

Air Conditioning Troubleshooting and System Checks

Air Conditioning Troubleshooting and System Checks – For Systems with HFC-134a

Refrigerant

Air Conditioner System Service • Refrigerant Recovery,

System Evacuation and Recharging

Air Conditioner System Service • Refrigerant Recovery, System Evacuation and

Recharging for Systems with HFC-134a Refrigerant

Removal and Installation of Air Conditioning Components

Removal and Installation of Air Conditioning Components – For Systems with

HFC-134a Refrigerant

Air Conditioning Compressor and Clutch

Air Conditioning Compressor and Clutch – For Systems with HFC-134a Refrigerant

Loader

ROPS Cab and ROPS Canopy

Seat and Seat Belts

Suspension Seat

Pedals and Levers

Cab Window Replacement