Caterpillar D20D Articulated Truck 9MG Workshop Manual PDF

This PDF Workshop Service Manual was developed to provide complete guidance on the operation, inspection, repair, and scheduled maintenance of the Caterpillar D20D Articulated Truck 9MG model. It serves as a full technical reference that helps users quickly recognize mechanical issues, detect abnormal machine performance, and correct faults in a timely manner. This electronic guide is an excellent tool for keeping the truck reliable, safe, and in proper working condition throughout its service life.

Supported Model: D20D Articulated Truck 9MG

Table of Contents:

Troubleshooting
SENR4130 HDB Series & M1 Series Heavy Duty Brushless Alternators.pdf
SENR3581 37-MT, 41-MT, 42-MT Series Starting Motors.pdf
SENR2082 N3 Series Brushless Alternators.pdf

Torque Specifications
SENR3130 Torque Specifications.pdf

Testing & Adjusting
SENR8230 D20D & D250D Articulated Truck Brake Systems.pdf
SENR8229 D20D & D250D Articulated Truck Suspension.pdf
SENR8228 D20D & D250D Articulated Trucks Steering & Body Hoist.pdf
SENR6615 Contour Series Seat.pdf
SENR6454 3114, 3116 and 3126 MUI Engine Governors.pdf
SENR4130 HDB Series & M1 Series Heavy Duty Brushless Alternators.pdf
SENR3583 3114, 3116 and 3126 Engines For Caterpillar Built Machines.pdf
SENR3581 37-MT, 41-MT, 42-MT Series Starting Motors.pdf
SENR2082 N3 Series Brushless Alternators.pdf
RENR2165 Comfort Series Seat For Caterpillar Machines.pdf
RENR1252 26SI Series Alternator.pdf

Systems Operation - Fundamentals
SEGV3008 Electrical System for All Caterpillar Products.pdf

System Operation
SENR8230 D20D & D250D Articulated Truck Brake Systems.pdf
SENR8229 D20D & D250D Articulated Truck Suspension.pdf
SENR8228 D20D & D250D Articulated Trucks Steering & Body Hoist.pdf
SENR6615 Contour Series Seat.pdf
SENR6454 3114, 3116 and 3126 MUI Engine Governors.pdf
SENR4130 HDB Series & M1 Series Heavy Duty Brushless Alternators.pdf
SENR3981 Fluid Power & Electrical Graphic Symbols.pdf
SENR3583 3114, 3116 and 3126 Engines For Caterpillar Built Machines.pdf
SENR3581 37-MT, 41-MT, 42-MT Series Starting Motors.pdf
SENR2082 N3 Series Brushless Alternators.pdf
RENR2165 Comfort Series Seat For Caterpillar Machines.pdf
RENR1252 26SI Series Alternator.pdf

Specifications
SENR8230 D20D & D250D Articulated Truck Brake Systems.pdf
SENR8229 D20D & D250D Articulated Truck Suspension.pdf
SENR8228 D20D & D250D Articulated Trucks Steering & Body Hoist.pdf
SENR8205 Articulated Truck Power Train.pdf
SENR6454 3114, 3116 and 3126 MUI Engine Governors.pdf
SENR4130 HDB Series & M1 Series Heavy Duty Brushless Alternators.pdf
SENR2082 N3 Series Brushless Alternators.pdf
RENR1252 26SI Series Alternator.pdf

Schematics
SENR3981 Fluid Power & Electrical Graphic Symbols.pdf
Caterpillar-D20D-Diagrams-Electric-pdf.pdf

Safety
SENR7733 General Service and Repair Safety Info.pdf

Operation & Maintenance Manual
SEBU9208 CAT Filters Recommendations.pdf
SEBU8257 European Union Physical Agents (Vibration) Directive.pdf
SEBU8157 Work Area Vision System.pdf
SEBU6516 D20D & D250D Articulated Truck.pdf
SEBU6250 CAT Machine Fluids Recommendations.pdf
SEBU5898 Cold Weather Recommendations.pdf
SEBU5596 Product Identification Numbers (PIN) Location Guide.pdf
M0085473 Caterpillar Corporate Radio.pdf

General Service Information
SENR5668 Limited Slip Differential.pdf
SELD0250 3126 and C7 Long Blocks.pdf
SELD0205 Selection Flowchart for Engines, etc.pdf
SELD0190 3406 and C-15 Long Blocks.pdf
SELD0188 3204 Long Blocks Reman Technical Supplement.pdf

Disassembly & Assembly
SENR8231 D20D & D250D Articulated Dump Trucks Machine System.pdf
SENR8226 D20D & D250D Articulated Dump Trucks Power Train.pdf
SENR6615 Contour Series Seat.pdf
SENR6454 3114, 3116 and 3126 MUI Engine Governors.pdf
SENR5583 Supplement for 3116 Engine D20D & D250D Articulated Dump Truck.pdf
SENR4130 HDB Series & M1 Series Heavy Duty Brushless Alternators.pdf
SENR3611 3114 & 3116 Engines, Excavator, Backhoe, Wheel Loader, Integrated Toolcarrier, Track-Type Tractor.pdf
SENR3581 37-MT, 41-MT, 42-MT Series Starting Motors.pdf
RENR2165 Comfort Series Seat For Caterpillar Machines.pdf

This workshop manual is written with a strong focus on practical service work and real repair procedures. It is not only useful for standard maintenance but also for more advanced mechanical repairs. All included documents together create a complete professional service package. To reduce the risk of equipment failure, personal injury, or costly damage, it is important to carefully follow all safety warnings, service notes, and operating recommendations. The manual is organized in a user-friendly way, making it suitable for both professional technicians and less experienced owners.

Manual Features
File Format: PDF
Language: English
Supported Platforms: Windows, Mac OS, Linux, Android, iOS
This digital factory guide contains disassembly instructions, installation procedures, wiring and hydraulic diagrams, system operation descriptions, technical specifications, engine service information, troubleshooting steps, safety rules, and many detailed illustrations. Additional files provide schematic symbols, component location references, and electrical system layouts.

FAQs
How can I download the manual?
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Is printing available?
Yes, the entire document can be printed. All pages are clear, readable, and available for saving or printing anytime.

Need support?
If you have any questions regarding this manual, please contact us. We are happy to assist and provide full after-sales support.