Caterpillar SIS 2021 (October) – Repair Manuals, Wiring & Parts – Full Offline Setup

Stop paying dealer subscriptions. Get the full CAT Service Information System (SIS) on your laptop—works 100% offline, anywhere you go.
The entire Caterpillar dealer library on your laptop.
Get offline access to over 2 million parts, repair manuals, and wiring diagrams for every CAT machine and engine ever made. No internet required. No subscription fees. 100% Remote Installation included.

Repair Any CAT Machine With Confidence

Stop calling the dealer for part numbers or torque specs. Caterpillar SIS 2021 puts the official factory data for every bulldozer, excavator, truck engine, and generator right on your screen—even when you have zero cell service.

This is the full October 2021 Data Release (4 DVDs), covering practically every machine from the 1970s up to late 2021.

What You Get (Dealer-Level Access):

• Complete Parts Catalogs: Find the exact part number in seconds using your serial number. View exploded 3D diagrams to see how assemblies fit together.

• Factory Service Manuals: Step-by-step disassembly and assembly instructions for engines, transmissions, hydraulics, and final drives.

• Electrical & Hydraulic Schematics: Full-color wiring diagrams and fluid power maps to trace shorts and leaks fast.

• Troubleshooting Guides: Follow the official "Fault Trees" to diagnose codes and symptoms correctly the first time.

• Specifications & Torques: Instant access to oil capacities, valve lash settings, and bolt torque specs.

Why Choose This Offline Version?

✅ Works 100% Offline: No internet needed. Perfect for service trucks, remote mines, and job sites with no signal.
✅ One-Time Payment: Say goodbye to the $1,000+ annual dealer subscription. You own this data forever.
✅ We Install It For You: This is a massive 180GB database. Don’t struggle with the setup—our certified technicians log in remotely and handle the entire installation from start to finish.

Works On Everything Caterpillar:

This database covers the entire CAT product line, including:

• Construction: Excavators, Dozers (D3-D11), Loaders, Graders, Backhoes, Skid Steers.

• Engines: C7, C15, C18, 3406E, Marine Engines, Generator Sets.

• Mining: 797 Trucks, Underground Loaders, Hydraulic Shovels.

• Ag & Forestry: Challengers, Harvesters, Feller Bunchers.

• Material Handling: Forklifts and Telehandlers.

Comparison: Offline SIS vs. Dealer Web SIS

System Requirements (Read Before Buying)

• Windows 10 Pro or Windows 11 Pro (64-bit). Note: Windows Home is NOT supported.

• Space: 250GB free hard drive space (SSD recommended for speed).

• RAM: 16GB highly recommended.

How It Works

1. Purchase: You will receive a download link for the 4 Data Discs (approx. 100GB total) within 30 minutes.

2. Download: Save the files to your PC.

3. Schedule: Contact us to book your remote install slot.

4. Relax: Our tech connects via TeamViewer, installs the software, configures the database, and tests it to ensure it’s ready to work.

🛡️ 100% Installation Guarantee

We guarantee a working installation. If our technician cannot get SIS 2021 running on your compatible laptop, you get a full refund.

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• 📥 Instant Download Link

• 🛠️ Remote Setup Included

• 🔒 Lifetime Offline License

• 🚛 Covers All CAT Models