Caterpillar Diagnostic Tool CF-31 with Cat ET for Heavy Equipment 2026

Caterpillar diagnostic tool with Cat ET and Panasonic Toughbook CF-31

• ✔ Caterpillar machines and engines up to model year 2026
• ✔ 24 months of technical support
• ✔ 12-month warranty
• ✔ Fully set up & ready to use immediately
• ✔ Rugged Panasonic Toughbook CF-31 included

The Caterpillar diagnostic tool is the professional solution for fault finding, parameter setting and ECU programming on Cat construction machines and engines. It runs Cat ET (Caterpillar Electronic Technician), the manufacturer’s own diagnostic software. The system is built for daily workshop and job-site use and reaches deep into machine- and ECU-dependent systems.

The system is supplied on a rugged Panasonic Toughbook CF-31 in an overhauled and tested condition. The computer is set up and ready to use immediately.

Supported Caterpillar machines and engines

• Excavators: crawler and wheeled excavators of the 300 series, including 320, 323, 330, 336 and 349
• Wheel loaders: wheel loaders of the 900 series, including 950, 966, 972 and 980
• Track-type tractors: track-type tractors of the D series, including D3, D4, D5, D6 and D8
• Motor graders: motor graders of the 120, 140 and 160 series
• Articulated trucks: articulated dump trucks of the 725, 730 and 740 series
• Compact and backhoe loaders: skid steer loaders such as 226, 232, 242 and 262 as well as backhoe loaders such as 428, 432 and 444
• Road construction: compactors and rollers of the CB and CS series, asphalt pavers of the AP series and cold planers
• Engines: Cat industrial and machine engines, including C4.4, C6.6, C7, C7.1, C9, C13, C15, C18, C27 and C32 as well as the 3406E series

The statement “up to model year 2026” describes the overall period the system can cover across all supported series – it does not mean that every machine and every function is automatically supported in full up to 2026. Which functions are actually available always depends on the machine, series, model year and ECU.

Professional diagnostics on Cat machines

Cat ET communicates with the machine’s control units via CAT Data Link (CDL) as well as J1939 CAN and J1708. This narrows down faults faster and allows targeted repairs instead of replacing parts on suspicion.

• Read and clear active and logged fault codes
• Read and record live data in real time
• Display and change configurable parameters
• Carry out calibrations and service functions
• Run tests such as cylinder cut-out and actuator control
• Flash control units and update software levels
• Create diagnostic reports for customers and workshop records

The available functions always depend on the machine, series and control unit.

Panasonic Toughbook CF-31 – overhauled, for use on site

The Toughbook CF-31 offers a large, low-glare display and a full keyboard for longer diagnostic sessions.

• Windows 10 Professional pre-installed
• 13.1-inch display, readable even in sunlight
• Fully sealed industrial housing
• Overhauled and technically tested

The computer is overhauled and supplied with a 12-month warranty. Depending on condition and use, the battery runtime is at least approx. 2 hours. The battery is a wear part and is not covered by the warranty.

More scope than universal diagnostic tools

On Cat machines, universal diagnostic tools usually only read generic fault codes. The manufacturer software Cat ET, by contrast, offers parameter setting, calibrations, tests and ECU programming – exactly the work that makes the difference in day-to-day service.

Scope of delivery

• Rugged computer Panasonic Toughbook CF-31 with pre-installed and configured Cat ET diagnostic software
• Comm Adapter 3 (478-0235) for the connection to the machine
• Data cable 457-6114
• Data cable 370-4617
• Transport case
• Power supply and mains cable
• 24 months of technical support and a 12-month warranty on the computer

Payment by invoice is possible via Klarna or PayPal. If you have questions about vehicle and machine coverage, call us on 0711-3654 4645.

FREE SHIPPING WITHIN THE EU ON ORDERS OVER €100!!

Goods are regularly delivered by shipping to the delivery address provided by the customer. The delivery address provided by the customer during the ordering process is decisive for the transaction. Deviating from this, if PayPal is selected as the payment method, the delivery address stored by the customer with PayPal at the time of payment is decisive.

If delivery to the customer was not possible and the shipping company returns the shipped goods to the seller, the customer bears the costs for the unsuccessful shipment. This does not apply if the customer exercises their right of withdrawal by refusing acceptance, if they are not responsible for the circumstance that led to the impossibility of delivery, or if they were temporarily prevented from accepting, unless the seller announced the service to them a reasonable time in advance.

You can choose to pay by bank transfer (prepayment), PayPal (direct debit and credit card via PayPal), Klarna (purchase on account or installment payment), Shop Pay, Google Pay or cash on delivery. If cash on delivery is selected as the payment method, an additional fee of €9.99 will be charged.

Free shipping within Germany for orders over €50.

Shipping costs within the EU are €14.99. For orders over €100, shipping within the entire EU is free.

The delivery time within Germany is usually 1–3 business days.

Worldwide shipping – to countries outside the EU – is also available. The applicable shipping costs are calculated and displayed during checkout depending on the destination country. For deliveries to countries outside the EU, additional customs duties, import taxes or other charges may apply, which are to be borne by the customer.