Case 621B 721B Repair Manual [Loader]

Service Repair Manual For Case 621B, 721B . Include detailed step by step Instructions, diagrams, illustrations for disassembly and assembly. Make an easy any repair, overhaul, testing, adjustment, teardown, replacement and change, inspection.

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MODELS Covered

Case 621B 721B loader

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

SECTIONS covered

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