Drott 120C Excavator Service Manual

Original price was: $51.46.Current price is: $24.99.

  • Covers Drott 120C Crawler Excavator
  • P/N S406208M2
  • 186 pages
  • Downloadable PDF format
  • 31mb file size
  • Works with Windows/Mac/Tablet/Mobile

The Drott 120C Service Manual PDF includes over 180 pages of technical specifications, step-by-step instructions, illustrations and schematics to guide mechanics through mechanical, electrical and hydraulic repairs. The service manual was digitally reproduced from the original dealer manual into a clear, searchable PDF format and is ideal for mechanics repairing or overhauling the Drott 120C excavator. This manual can be downloaded instantly to your computer, tablet or smartphone.

Latest edition. Detroit V-71 engine repair manual sold separately.



  • Torque Specs


  • Lubricant and Fluid Recommendations
  • Component Capacities
  • Pressure Settings
  • Maintenance Schedule
  • Service Chart
  • Pictorial Listing of Grease Fitting Locations


  • Description, Maintenance and Troubleshooting
  • Carbody and Turntable Bearing
  • Track Assemblies
  • Track Drive Assemblies
  • Disassembly and Repair
  • General Cleaning Instructions
  • Upper Track Rollers
  • Lower Track Rollers
  • Idler Wheel Assembly
  • Digging Brake
  • Track Drive Transmission


  • Description, Maintenance and Troubleshooting
  • Pump Drive System
  • Swing System
  • Boom Assembly
  • Disassembly and Repair
  • Pump Drive Transmission and Clutch
  • House Brakes
  • Swing Gearbox
  • Turntable Bearing Replacement
  • Boom Removal


  • Description, Maintenance and Troubleshooting
  • The Charging System
  • Control Circuits
  • Lights and Instrument Circuits
  • Disassembly and Repair
  • Wiring Diagram


  • Description, Maintenance and Troubleshooting
  • Hydraulic Schematic
  • Introduction to Hydraulics
  • General Description and System Maintenance
  • Hydraulic Reservoir and Supercharge System
  • Hydraulic System Flushing and Troubleshooting
  • Main Hydraulic System
  • Pilot Control System
  • Auxiliary System
  • Track Drive Circuit
  • Tool Cylinder Circuit
  • Swing Circuit
  • Crowd Cylinder Circuit
  • Hoist Cylinder Circuit (includes Fast Hoist Circuit)
  • Pump Drive Clutch Circuit
  • Counterweight System
  • Disassembly and Repair
  • Hydraulic Reservoir
  • Main Pumps
  • Main Control Valves
  • Power Sensing Valve
  • Hydraulic Filters (In-line)
  • Charging Pump
  • Modulator Valves
  • Swing Cushion Valve
  • Swing Motors
  • Tool, Crowd and Hoist Cylinders
  • Fast Hoist Control Valve
  • Track Drive Motors
  • Hydraulic Swivel
  • Counterweight Control Valve
  • Counterweight Cylinders
  • Clutch Cylinder

Example Service Manual PDF Download

Need more information on this product?

If you have any questions regarding this manual, please contact us and reference the title or SKU.

SKU: DRT-120C-SM Categories: , Tags: ,


There are no reviews yet.

Be the first to review “Drott 120C Excavator Service Manual”

Your email address will not be published. Required fields are marked *