Case 1021F, 1121F Wheel Loader Service Manual


Covers: Case 1021F, 1121F Wheel Loader

  • Please contact us with your serial number if you have compatibility questions

Type: Service Manual
Language: English
Format: PDF
Features: Bookmarked, searchable, printable
Compatibility: Windows/Mac/Tablet/Mobile

This service manual contains important information for the maintenance, troubleshooting and servicing of Case 1021F and 1121F loaders. In this 1,600+ page manual you will find detailed specifications, illustrations, diagrams and step-by-step procedures to properly service the loader to the factory standards.

Tier 2 or Tier 4 emissions (select from drop-down). Engine repair manuals sold separately.



  • Torque specifications
  • Capacities


  • Engine removal and installation
  • Air Cleaner
  • Aftercooler testing
  • SCR (if equipped)
  • Reverse fan control system


  • Powershift transmission
  • Powershift transmission external controls
  • Gearbox internal components
  • Powershift transmission internal components

4WD System

  • Driveshaft


  • Front/Rear Axles
  • Front bevel gear set and differential
  • Final drive hub, steering knuckles, and shafts


  • Parking brake / Parking lock
  • Hydraulic service brakes


  • Hydraulic system description, service and tests
  • Variable displacement pump
  • Reservoir, cooler, and filters
  • Pilot system
  • Main control valve
  • Auxiliary hydraulic valves and lines
  • Front loader arm hydraulic system
  • Steering


  • Fuel tank system
  • Engine cooling system
  • Engine control system
  • Transmission control system
  • Service brake electrical system
  • Parking brake electrical system
  • Hydraulic system control
  • Steering control system
  • HVAC control system
  • Cab HVAC controls
  • Harnesses and connectors
  • Engine starting system
  • Cold start aid
  • Alternator
  • Battery
  • External lighting
  • External lighting switches and relays


  • Machine shields and guards
  • Protections and footboards
  • Air Seat
  • Cab
  • Air conditioning


  • Wiring Diagram Poster
  • Hydraulic Schematic Poster

Please note this manual is in downloadable PDF format only. If you have any questions about this product or would like to request sample pages, please contact us and reference the product name or SKU.

SKU: CASE-1021F-SM Category: Tags: , ,