Description
John Deere JD644 and JD644-A Loaders Technical Manual (TM1011)
John Deere JD644 and JD644-A Loaders INDEX:
GENERAL
Section 10 –
Group 5
$eciiications
Predelivery, Delivery, and After
Sales Service
Tune-Up and Adjustment
Group 15
Group 20
Lubrication
Group 25
Loader Separation
Section 20
– ENGNE
Group 5
Diagnosis
Basic Engine
Group 10
Engine Lubrication
Group 15
Group 20
Speed Control Linkage
Engine Coolinx
Group 25
Group 30
Specifications and Special Tools
FUEL SYSTEM
Section 30
System Diagnosis
Group 5
Tank, Filters, and Transfer
Group IO
Pump
Group 15
Air Intake System
Group 20
Fuel Injection Pump
Roosa-Master Injection Nozzles
Group 25
ELECTRICAL SYSTEM
Section 40 –
Wiring Diagrams
Group 5
Charging System
Group 10
Group 15
Starting Circuit
Gauges and Switches
Group 20
Section 50
– POWER TRAN
System Diagnosis
Group 5
Group 10
Damper Asse mbly and Drive
Shafts
Group 15
Transmission Assernbly
Group 16
Disconnect Output Shaft
Group 20
Axle Assemblies
Group 25
Differentials
Section 60
– POWER STEERING AND BRAKE SYSTEMS
Group 5
General Information, Testing, and
Diagnosis
Group 10
Hydraulic Pump
Group 15
Filters, Oil Cooler, and Accumu-
lators
Group 20
Steering System
Group 25
Brake System
– HYDRAULIC SYSTEM (Loader
Section 70
Functions)
Group 5
General Information, Testing, and
Diagnosis
Group 10
Reservoir and Filters
Group 15
Hydraulic Pump
Group 20
Control Valve
Group 25
Return-to-Dig Valve
Group 30
Backhoe Control Valve
Group 35
Cylinders
Group 40
Backhoe Swing Cylinder
Section 80 –
MISCELLANEOUS COMPONENTS
Group 5
Frames
Group 10
Buckets
Group 15
Group 20
0905 Backhoe
Group 25
Specifications and »ecial Tools
