Case 621 Wheel Loader Service Manual (S/N JAK0021700 & Below)


Covers: Case 621 Wheel Loader (Serial/PIN JAK0021700 & Below)
Pages: 1,602
Format: PDF download
File size: 515mb
Compatibility: Windows/Mac computers
Notes: Instant digital download only – no printed copy or CD-ROM media.

This professional service manual is the latest edition and contains service procedures for the Case 621 Wheel Loader (S/N JAK0021700 & Below). Troubleshooting, removal, disassembly, inspection and installation procedures, and complete specifications and torque references can be found in most sections. View the Case 621 Wheel Loader (S/N JAK0021700 & Below) service manual on your computer or print off detailed repair and maintenance instructions as needed.

Topics in the Case 621 Wheel Loader (S/N JAK0021700 & Below) Service Manual:

Standard Torque Specs
Fluids and Lubricants
Detailed Engine Specifications

Engine Removal and Installation and Radiator Removal and Installation
Stall Tests
Cylinder Head and Valve Train
Cylinder Block, Pistons, Rods, Camshaft, Main Bearings, Oil Seals, and Flywheel
Lubrication System
Cooling System
Turbocharger Failure Analysis

Fuel System and Filters
Fuel Injection Pump and Drive Gear
Fuel Injectors

Specifications, Schematics, Troubleshooting, and Using Booster
Batteries to Start the Engine
Starter and Starter Solenoid – Nippondenso
45 Ampere Alternator – Bosch
Instrument Cluster
65 Ampere Alternator – Bosch

Removal and Installation of Steering Components
Steering Troubleshooting and Pressure Check
Steering Control Valve
Flow Control Valve
Steering Cylinder
Center Pivot
Auxiliary Steering Pump, Valve, and Flow Indicator (ZF Transmission)
Auxiliary Steering Pump, Valve, and Check Valve (Clark Transmission)

Removal and Installation of Components .
Transmission Specifications and Troubleshooting (ZF Transmission)
Transmission Specifications and Troubleshooting (Clark Transmission)
Transmission Repair (ZF Transmission)
Transmission Repair (Clark Transmission)
Differential and Planetary Repair
Drive Shafts, Center Bearing and Universal Joints
Wheels and Tires

Removal and Installation of Brake Components
Specifications, Schematic, Troubleshooting, Leakage Tests and Adjustments
Air Compressor and Governor
Brake Valve
Brake Actuator
Pressure Reducing Valve and Pressure Protection Valve
Parking Brake (ZF Transmission)
Parking Brake (Clark Transmission)
Disc Brakes
Air Dryer

Removal and Installation of Components
Hydraulic Specifications, Schematics, Troubleshooting, and Pressure Checks
Cleaning the Hydraulic System
Hydraulic Pump
Loader Control Valve
Remote Control Valves
Pressure Regulator Valve and Accumulator

Air Conditioning Troubleshooting and System Checks
Discharging and Charging the Air Conditioning System
Removal and Installation of Air Conditioning Components
Compressor and Clutch
ROPS Cab and ROPS Canopy
Seats and Seat Belts
Suspension Seat
Pedals and Levers

Example content (actual manual may vary):

Case Dozer Service Manual Sample

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