Caterpillar 3126B and 3126E On-Highway Engine Disassembly and Assembly Shop Manual

This is a service and repair manual for the Caterpillar 3126B and 3126E On-Highway Engine Disassembly and Assembly. It is written for people who do the work themselves — professional technicians and fleet and maintenance teams alike — and collects the procedures, specifications and test information you need in one searchable document.

The document is 612 pages long and is referenced as SENR3581-04.

What's inside

• Disassembly and Assembly
• Specifications
• Systems Operation
• Testing and Adjusting
• Troubleshooting
• 37-MT, 41-MT, and 42-MT Series Starting Motors (assembly/disassembly procedures)
• RENR2314 - Wabco Air Compressors (supplementary reference)
• UENR3262 - Seal Installation (supplementary reference)
• Starting Motor - Delco 50-MT

Models covered

• 3126B
• 3126E On-Highway Truck Engines

User help

1. Make sure it matches your machine. Look up your model and serial number and compare them with the coverage above. Not sure? Send us those details and we will help you check before you buy.
2. Get the file. This is a digital PDF download. Nothing is shipped, so you can start using it as soon as you have the file.
3. Open it anywhere. Use any current PDF reader (Adobe Acrobat Reader, your browser, or a phone or tablet app). Save a copy to your computer and to a backup drive.
4. Jump straight to the section you need. Start from the table of contents or search for a part name, fault code or value, then print just those pages for the workshop.
5. Work step by step. Read the safety notes for a procedure before you start, follow the stated torque values and sequences, and use the specification and test sections to confirm a fault before replacing parts.
6. Safety first. Work on machinery, fuel and electrical systems carries real risk. Follow the document's safety notes, use suitable tools and supports, and comply with local rules. If a job is beyond your experience, use a qualified technician.

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