Complete workshop repair service manual with electrical wiring diagrams for Caterpillar 308D CR Series Excavators. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

Caterpillar 308D CR Series Excavators service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

892 pages, bookmarked, Searchable, Printable, high quality PDF

MANUAL LIST:
KENR6164 - Systems Operation (308D CR Excavator Hydraulic System)
KENR6165 - Testing and Adjusting (308D CR Mini Hydraulic Excavator Hydraulic System)
KENR6799 - Specifications (308D, 314D, 321D and 328D Excavators Air Conditioning and Heating)
KENR6799 - Systems Operation (308D, 314D, 321D and 328D Excavators Air Conditioning and Heating)
KENR6799 - Testing and Adjusting (308D, 314D, 321D and 328D Excavators Air Conditioning and Heating)
KENR7708 - Schematic (308D Excavator Hydraulic System)
KENR8224 - Schematic (308D CR SB Excavator Electrical System)
RENR9740 - Disassembly and Assembly (308D CR Excavator Engine Supplement)
RENR9741 - Disassembly and Assembly (308D CR Excavator Machine Systems)
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 KENR6163 - Specifications (308D Excavator Machine System)
    Accumulator (Pilot).pdf
    Air Conditioner Lines.pdf
    Auxiliary Hydraulic Lines - Long Stick.pdf
    Auxiliary Hydraulic Lines - Medium Pressure Long Stick.pdf
    Auxiliary Hydraulic Lines - Medium Pressure Medium Stick.pdf
    Auxiliary Hydraulic Lines - Medium Stick.pdf
    Blade Cylinder Lines.pdf
    Blade Lift Cylinder.pdf
    Blade Mounting.pdf
    Boom - 3.39 m (11.1 ft).pdf
    Boom Cylinder Lines.pdf
    Boom Cylinder.pdf
    Boom Cylinder - Variable Angle.pdf
    Boom Lines.pdf
    Bucket Cylinder Lines.pdf
    Bucket Cylinder.pdf
    Bucket Linkage.pdf
    Cab.pdf
    Check Valve (Hydraulic Oil Cooler Bypass).pdf
    Control Manifold (Pilot Oil).pdf
    Counterweight.pdf
    Cylinder (Thumb).pdf
    Engine Mounting.pdf
    Fasteners.pdf
    Final Drive.pdf
    Front Idler.pdf
    Front Lines.pdf
    Fuel Lines.pdf
    Fuel Tank.pdf
    Handle Control (Travel).pdf
    Heater and Air Conditioner Mounting.pdf
    Hydraulic Tank and Filter.pdf
    Hydraulic Tank Mounting.pdf
    Joystick Control.pdf
    Main Hydraulic Pump Mounting.pdf
    Main Hydraulic Pump.pdf
    Operator Monitor.pdf
    Pilot Lines.pdf
    Pilot Valve (Joystick).pdf
    Pilot Valve (Travel).pdf
    Pump Coupling.pdf
    Recoil Spring.pdf
    Refrigerant Compressor Mounting.pdf
    Sprocket.pdf
    Stick Cylinder Lines.pdf
    Stick Cylinder.pdf
    Stick Lines - Long.pdf
    Stick Lines - Medium.pdf
    Stick - Long 2.21 m (7.3 ft).pdf
    Stick - Medium 1.67 m (5.5 ft).pdf
    Swing Boom Cylinder.pdf
    Swing Drive.pdf
    Swing Gear and Bearing.pdf
    Swivel.pdf
    Track Adjuster.pdf
    Track Carrier Roller.pdf
    Track.pdf
    Track Roller (Center Flange).pdf
    Track Roller Mounting.pdf
    Track Roller (Single Flange).pdf
    Travel Motor Guard.pdf
    Travel Motor Lines.pdf
    Upper Frame - Swing.pdf
    Wiring (Battery).pdf
 KENR6164 - Systems Operation (308D CR Excavator Hydraulic System)
    Accumulator (Pilot).pdf
    Blade Hydraulic System.pdf
    Bucket Hydraulic System.pdf
    Bypass Valve (Return) - Bypass Check Valve.pdf
    Check Valve (Load).pdf
    Check Valve (Return Makeup) - Slow Return Check Valve.pdf
    Control Valve (Boom Lowering).pdf
    Control Valve (Stick Lowering).pdf
    Cylinders (Boom, Stick and Bucket).pdf
    Displacement Change Valve.pdf
    Final Drive.pdf
    Gear Pump (Pilot).pdf
    General Information.pdf
    Hydraulic Filter (Pilot).pdf
    Hydraulic Oil Cooler.pdf
    Hydraulic Tank and Filter.pdf
    Main Control Valve.pdf
    Main Hydraulic Pump.pdf
    Main Hydraulic System.pdf
    Medium Pressure Hydraulic System.pdf
    Oil Makeup (Swing System).pdf
    Oil Makeup (Travel System).pdf
    One-Way Flow Hydraulic System.pdf
    Pilot Hydraulic System.pdf
    Pilot Valve (Joystick).pdf
    Pilot Valve (Swing Parking Brake).pdf
    Pilot Valve (Travel).pdf
    Proportional Priority Pressure Compensation System - Metered Out.pdf
    Pump Control (Main Hydraulic).pdf
    Relief Valve (Cushion Crossover) - Anti-Reaction Valve.pdf
    Relief Valve (Line).pdf
    Relief Valve (Main).pdf
    Relief Valve (Pilot).pdf
    Relief Valve (Swing).pdf
    Return Hydraulic System.pdf
    Solenoid Valve (Hydraulic Lockout).pdf
    Stick Hydraulic System.pdf
    Swing Boom Hydraulic System.pdf
    Swing Drive.pdf
    Swing Hydraulic System.pdf
    Swing Motor.pdf
    Swivel.pdf
    Travel Counterbalance Valve.pdf
    Travel Hydraulic System.pdf
    Travel Motor.pdf
    Travel Parking Brake.pdf
    Two-Way Flow Hydraulic System.pdf
 KENR6165 - Testing and Adjusting (308D CR Mini Hydraulic Excavator Hydraulic System)
    Accumulator (Pilot) - Test and Charge.pdf
    Cylinder Drift - Check - Blade (If Equipped).pdf
    Cylinder Drift - Check - Empty Bucket.pdf
    Cylinder Drift - Check - Loaded Bucket.pdf
    Cylinder Speed - Check - Blade (If Equipped).pdf
    Cylinder Speed - Check - Boom Swing.pdf
    Cylinder Speed - Check.pdf
    Engine Performance - Test - Engine Speed.pdf
    Event Codes.pdf
    Gear Pump (Pilot) - Test.pdf
    General Testing and Adjusting Information.pdf
    Hydraulic System Air - Purge - Resonator Line.pdf
    Hydraulic System Pressure - Release.pdf
    Joystick Control - Calibrate - Slide Control.pdf
    Machine Drift on a Slope - Check.pdf
    Machine Tool Control System - Select.pdf
    Main Hydraulic Pump Air - Purge.pdf
    Main Pump (Flow) - Test.pdf
    Operational Checks.pdf
    Process for Setting Up the Work Tool.pdf
    Pump Control (Output Flow) - Adjust.pdf
    Relief Valve (Blade) - Test and Adjust - If Equipped.pdf
    Relief Valve (Line) - Test and Adjust - Boom and Stick Lowering Control Valves (If Equipped).pdf
    Relief Valve (Line) - Test and Adjust.pdf
    Relief Valve (Main) - Test and Adjust.pdf
    Relief Valve (Pilot) - Test and Adjust.pdf
    Relief Valve (Swing) - Test and Adjust.pdf
    Solenoid Valve (Proportional Reducing) - Calibrate.pdf
    Specifications.pdf
    Swing Motor - Test - Measurement of Case Drain Oil.pdf
    Swing Speed and Overswing on Level Ground - Check.pdf
    Swing Speed and Swing Drift on a Slope - Check.pdf
    Travel Motor - Test - Measurement of Case Drain Oil.pdf
    Travel on Level Ground - Test - Optional Test.pdf
    Travel on Level Ground - Test.pdf
    Visual Inspection.pdf
    Work Tool Parameter - Default Values.pdf
    Work Tool Parameter - Program.pdf
    Work Tool - Select.pdf
 KENR6799 - Specifications (308D, 314D, 321D and 328D Excavators Air Conditioning and Heating)
    Air Conditioner Lines.pdf
    Blower Motor.pdf
    Pressure Switch (Refrigerant Pressure Cutoff).pdf
    Refrigerant Compressor.pdf
    System Capacities for Refrigerant (Excavators) - 308D CR-328D CR.pdf
 KENR6799 - Systems Operation (308D, 314D, 321D and 328D Excavators Air Conditioning and Heating)
    Actuator (Air Conditioner Control).pdf
    Air Conditioning and Heating System Sensor Operation.pdf
    Air Conditioning System.pdf
    Blower Motor.pdf
    Control Module.pdf
    Control Panel.pdf
    Evaporator Coil.pdf
    General Information.pdf
    Heater Core (Cab).pdf
    Pressure Switch (Refrigerant Pressure Cutoff).pdf
    Refrigerant Compressor.pdf
    Refrigerant Condenser.pdf
    Refrigerant Expansion Valve.pdf
    Refrigerant Receiver-Dryer.pdf
    Speed Control - Power Transistor.pdf
 KENR6799 - Testing and Adjusting (308D, 314D, 321D and 328D Excavators Air Conditioning and Heating)
    Actuator Troubleshooting - Abnormal Detection.pdf
    Actuator Troubleshooting - Guide for Actuators.pdf
    Air Conditioning System Troubleshooting - Guide for Sensors.pdf
    General Troubleshooting Information.pdf
    Machine Preparation for Troubleshooting.pdf
    Manifold Gauge Set (Refrigerant) - Install.pdf
    Manifold Gauge Set (Refrigerant) - Remove.pdf
    Refrigerant Compressor Oil - Check.pdf
    Refrigerant Leakage - Test.pdf
    Refrigerant Recovery.pdf
    Refrigerant System - Charge.pdf
    Refrigerant System - Evacuate.pdf
    Refrigerant System - Flush.pdf
    Required Tools.pdf
    Sensor Troubleshooting.pdf
    Visual Inspection.pdf
 KENR7708 - Schematic (308D Excavator Hydraulic System)
    Collage.pdf
    Main.pdf
 KENR8224 - Schematic (308D CR SB Excavator Electrical System)
    Collage.pdf
    Main.pdf
 RENR9740 - Disassembly and Assembly (308D CR Excavator Engine Supplement)
    Aftercooler - Remove and Install.pdf
    Air Cleaner - Remove and Install.pdf
    Alternator - Install.pdf
    Alternator - Remove.pdf
    Battery - Remove and Install.pdf
    Electric Starting Motor - Remove and Install.pdf
    Engine and Main Hydraulic Pump - Install.pdf
    Engine and Main Hydraulic Pump - Remove.pdf
    Engine Oil Filter and Oil Filter Base - Install.pdf
    Engine Oil Filter and Oil Filter Base - Remove.pdf
    Engine Oil Filter Base - Assemble.pdf
    Engine Oil Filter Base - Disassemble.pdf
    Fuel Filter and Water Separator Base - Remove and Install.pdf
    Hood - Remove and Install.pdf
    Hydraulic Oil Cooler - Remove and Install.pdf
    Muffler - Remove and Install.pdf
    Radiator and Hydraulic Oil Cooler - Install.pdf
    Radiator and Hydraulic Oil Cooler - Remove.pdf
    Radiator - Remove and Install.pdf
    Refrigerant Compressor - Remove and Install.pdf
    Refrigerant Condenser - Remove and Install.pdf
    System Pressure - Release.pdf
    Turbocharger - Install.pdf
    Turbocharger - Remove.pdf
    Water Temperature Regulator - Remove and Install.pdf
 RENR9741 - Disassembly and Assembly (308D CR Excavator Machine Systems)
     Accumulator - Remove and Install.pdf
     Blade Cylinder - Remove and Install.pdf
     Blade - Remove and Install.pdf
     Blower Motor (Air Conditioner, Heater) - Remove and Install.pdf
     Boom Cylinder - Remove and Install.pdf
     Bucket Cylinder - Remove and Install.pdf
     Bucket - Install.pdf
     Bucket Linkage - Install.pdf
     Bucket Linkage - Remove.pdf
     Bucket - Remove.pdf
     Cab - Install.pdf
     Cab - Remove.pdf
     Check Valve (Cooler Bypass) - Install.pdf
     Check Valve (Cooler Bypass) - Remove.pdf
     Check Valve (Slow Return) - Install.pdf
     Check Valve (Slow Return) - Remove.pdf
     Control Manifold (Pilot Oil) - Install.pdf
     Control Manifold (Pilot Oil) - Remove.pdf
     Counterweight - Remove and Install.pdf
     Duo-Cone Conventional Seals - Install.pdf
     Evaporator Coil - Install.pdf
     Evaporator Coil - Remove.pdf
     Final Drive and Travel Motor - Assemble.pdf
     Final Drive and Travel Motor - Disassemble.pdf
     Final Drive and Travel Motor - Install.pdf
     Final Drive and Travel Motor - Remove.pdf
     Front Idler and Recoil Spring - Install.pdf
     Front Idler and Recoil Spring - Remove.pdf
     Fuel Tank - Install.pdf
     Fuel Tank - Remove.pdf
     Gear Pump (Pilot) - Install.pdf
     Gear Pump (Pilot) - Remove.pdf
     Heater Core - Install.pdf
     Heater Core - Remove.pdf
     Heating and Air Conditioning Unit - Install.pdf
     Heating and Air Conditioning Unit - Remove.pdf
     Hydraulic Lockout Control - Install.pdf
     Hydraulic Lockout Control - Remove.pdf
     Hydraulic Tank - Install.pdf
     Hydraulic Tank - Remove.pdf
     Hydraulic Track Adjusters - Install.pdf
     Hydraulic Track Adjusters - Remove.pdf
     Main Control Valve - Assemble.pdf
     Main Control Valve - Disassemble.pdf
     Main Control Valve - Install.pdf
     Main Control Valve - Remove.pdf
     Main Hydraulic Pump - Assemble.pdf
     Main Hydraulic Pump - Disassemble.pdf
     Main Hydraulic Pump - Install.pdf
     Main Hydraulic Pump - Remove.pdf
     Oil Filter and Base - Remove and Install.pdf
     Pilot Valve (Alternate Pattern Control) - Remove and Install.pdf
     Pilot Valve (Blade) - Assemble.pdf
     Pilot Valve (Blade) - Disassemble.pdf
     Pilot Valve (Blade) - Install.pdf
     Pilot Valve (Blade) - Remove.pdf
     Pilot Valve (Joystick) - Assemble.pdf
     Pilot Valve (Joystick) - Disassemble.pdf
     Pilot Valve (Joystick) - Install.pdf
     Pilot Valve (Joystick) - Remove.pdf
     Pilot Valve (Travel) - Assemble.pdf
     Pilot Valve (Travel) - Disassemble.pdf
     Pilot Valve (Travel) - Install.pdf
     Pilot Valve (Travel) - Remove.pdf
     Receiver Dryer (Refrigerant) - Remove and Install.pdf
     Recoil Spring - Assemble.pdf
     Recoil Spring - Disassemble.pdf
     Relief Valve (Pilot) - Remove and Install.pdf
     Seat - Remove and Install.pdf
     Seat Support - Remove and Install.pdf
     Seat Suspension - Remove and Install.pdf
     Solenoid Valve (Hydraulic Lockout) - Remove and Install.pdf
     Solenoid Valve (Swing Boom) - Assemble.pdf
     Solenoid Valve (Swing Boom) - Disassemble.pdf
     Solenoid Valve (Swing Boom) - Install.pdf
     Solenoid Valve (Swing Boom) - Remove.pdf
     Solenoid Valve (Travel Speed) - Remove and Install.pdf
     Solenoid Valve (Two-Way Flow and One Pump_Two Pump) - Assemble.pdf
     Solenoid Valve (Two-Way Flow and One Pump_Two Pump) - Disassemble.pdf
     Solenoid Valve (Two-Way Flow and One Pump_Two Pump) - Install.pdf
     Solenoid Valve (Two-Way Flow and One Pump_Two Pump) - Remove.pdf
     Sprocket - Remove and Install.pdf
     Stick Cylinder - Remove and Install.pdf
     Stick - Install.pdf
     Stick - Remove.pdf
     Support (Swing Boom) - Install.pdf
     Support (Swing Boom) - Remove.pdf
     Swing Boom Cylinder - Remove and Install.pdf
     Swing Boom - Install.pdf
     Swing Boom - Remove.pdf
     Swing Drive - Assemble.pdf
     Swing Drive - Disassemble.pdf
     Swing Drive - Install.pdf
     Swing Drive - Remove.pdf
     Swing Gear and Bearing - Remove and Install.pdf
     Swing Motor - Assemble.pdf
     Swing Motor - Disassemble.pdf
     Swing Motor - Install.pdf
     Swing Motor - Remove.pdf
     Swivel - Assemble.pdf
     Swivel - Disassemble.pdf
     Swivel - Install.pdf
     Swivel - Remove.pdf
     System Pressure - Release.pdf
     Track Adjuster - Assemble.pdf
     Track Adjuster - Disassemble.pdf
     Track Carrier Roller - Remove and Install.pdf
     Track - Remove and Install.pdf
     Track Roller - Remove and Install.pdf
     Undercarriage Frame - Install.pdf
     Undercarriage Frame - Remove.pdf
     Window Wiper Motor - Remove and Install.pdf

EXCERPT:
Blade RAISE
During a BLADE RAISE operation, the oil delivery from main pump (20) flows through line (19) to parallel feeder passage (5) in main control valve (2). Oil flows to blade control valve (12) .
Pilot pump (21) supplies oil to pilot control valve (16) through line (15). When the joystick for the blade is moved to the full BLADE RAISE position, the pilot oil flows from pilot control valve (16) through pilot line (13). The pilot oil flows to blade control valve (12) .
The pilot oil flow shifts blade control valve (12) for BLADE RAISE operation. The oil delivery from the main pump in parallel feeder passage (5) flows through passage (8) through blade control valve (12). The oil delivery from the main pump then flows through line (6) to the head end of blade cylinder (1) .
Return oil from the rod end of blade cylinder (1) flows through line (11) to blade control valve (12). The oil then flows through passage (9) and through return line (17) and line (18) to the hydraulic tank (23) .
Blade FLOAT
In the FLOAT position, no pump oil is supplied to the blade cylinder. No hydraulic control is used on the blade cylinder. The mass (size and weight) of the blade causes the blade to stay on the ground. The FLOAT position is suitable for levelling work on a soft surface.
When the blade control lever is moved forward into the detent position, the blade is placed in the FLOAT position. Blade control valve (12) shifts for the FLOAT operation. This allows oil to flow from the rod end of the cylinder and the head end of the cylinder through blade control valve (12).
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