Case 450 Crawler Dozer Repair Manual


Covers: Case 450 Crawler Dozer (original series only, all years/serial numbers)
Pages: 883
Format: PDF
File size: 130mb
Compatibility: Windows/Mac/Tablet
Notes: Instant digital download only – no printed copy or CD-ROM media.

This professional factory repair manual in downloadable PDF format contains repair procedures for the original Case 450 crawler dozer. Troubleshooting, removal, disassembly, inspection and installation procedures, and complete specifications and tightening references can be found in most sections. View the PDF manual on your computer or print off detailed service and maintenance as well as illustrations as needed.



  • General Engine Specification – 188 and 207 Diesel
  • Detailed Engine Specifications – 207 Diesel
  • Detailed Engine Specifications – 188 Diesel
  • Maintenance and Lubrication
  • Torque Chart


  • Engine Diagnosis – Diesel
  • Engine Tune Up – Diesel
  • Cylinder Head, Valve Train and Camshaft – Diesel Engine
  • Cylinder Block, Sleeves, Pistons and Rods- 188 Diesel Engine
  • Crankshaft, Bearings, Flywheel and Oil Seals – Diesel Engine
  • Oil Pump – Diesel
  • Engine Removal, Installation anti Stall Tests
  • Air Cleaner
  • Cooling System – Diesel
  • Cylinder Block, Sleeves, Pistons – 207 Engine
  • Engine Lubrication – Diesel


  • Fuel Filters- Diesel Engines
  • Fuel Injection Pump
  • Fuel Injectors
  • Throttle Linkage Adjustments, Fuel Lines


  • Hydraulic Diagrams. Troubleshooting, Pressure Checks
  • Equipment Pump – D31254, D41390
  • Loader and Dozer Control Valves
  • Commercial – Shearing Backhoe Control Valves
  • Case Backhoe Control Valve
  • Miscellaneous Valves and Couplings
  • D26726 and D45399 Diversion Valves
  • D39297 4-in-1 Bucket Relief Valve
  • D43550 Anti-Rollback Check Valve
  • D46850 Relief Valve
  • Backhoe Quick Disconnect Couplings
  • Pull Behind Quick Disconnect Couplings
  • Boom Lockout System
  • Hydraulic Cylinders


  • Track and Suspension System
  • Supplement 1 – Torque Procedure for Sprocket Mounting Bolts
  • Intertrac Rollers


  • T145 Transmission and Final Drives
  • Troubleshooting the Transmission/Converter
  • Hydraulic System with a Flowmeter
  • Transmission/Converter Hydraulic System
  • Diagram – Transmission Removal – Transmission Controls
  • Torque Converter
  • Charging Pump
  • Declutch Lockout
  • Drive Shafts


  • Master Cylinders, Parking Brakes, Adjustments


  • Wiring Diagrams
  • Troubleshooting
  • Ignition System
  • Batteries
  • Starter and Starter Solenoid
  • Generator and Voltage Regulator


  • Loader
  • Dozers
  • Models 9 and 19 Gearmatic Winches
  • Ripper
  • Roll-Over Protection Structure
  • Models 26 and 26C Backhoes
  • Model 32 Backhoe
  • Model 33 Backhoe
  • Seat and Tank Assembly

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It’s simple – after purchasing this manual through our secure checkout, a download link will be sent to the email address you specify at checkout. You have up to 90 days to retrieve and save the file. Once saved, the manual is yours for good.

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