Description

Komatsu 730E Technical Manual: Factory Specs for the 200-Ton Hauler

Listen, I have been wrenching for 28 years, and when a 200-ton hauler like the Komatsu 730E Technical Manual shows up in the bay, the last thing you want is a generic manual that guesses at torque values. This 186-page OEM book gives you the factory numbers – the same ones Komatsu uses on the assembly line. If you are pulling a Cummins K2000E or setting the HYDRAR II suspension, the wrong spec will cost you time and parts. I have seen guys strip threads on the GE-70R motor mount because they used a third-party chart. Don’t be that guy.

186 Pages of Factory Data

This Komatsu 730E Technical Manual is exactly 186 pages. That is the full factory specification book, not a condensed aftermarket reprint. It covers the diesel engine (Komatsu SSA16V16V159 / Cummins K2000E), the CTA 2X drive, all hydraulic circuits, the HYDRAR II suspensions, and the GE-70R traction motors. Page 5 lists the engine data: 16 cylinders, 4-cycle, 2000 hp at 1900 rpm, 1860 flywheel hp, wet weight 11,670 pounds. You will also find the pump IDs for the steering/brake pump, hoist pump, alternator, blower, and filter locations.

That weight is 11,670 pounds wet.

Engine Specifications and Overhaul Procedures

If you are rebuilding or swapping the Komatsu SSA16V16V159, you need the original factory specs. The manual gives you the bore, stroke, firing order, and all torque values for the head bolts – though the specific numbers are on the engine pages. It also includes the flywheel horsepower rating (1860 hp at 1900 rpm) and the brake horsepower (2000 hp). This is not a summary; it is the actual Komatsu data table from the assembly plant.

What Torque Values Are Listed for the GE-70R Motors?

The GE-70R traction motors are part of the CTA 2X propulsion system. The manual includes the motor specifications and the electrical connection diagrams. [DATA NEEDED] for exact torque values on the motor mount bolts, but the factory section on the drive system contains the OEM tolerances. If you need the torque for the grid box or the alternator coupling, the manual lists those in the electrical chapter.

Hydraulic System: From the Tolva Pump to Steering

The manual breaks down every hydraulic component: the steering/brake pump (BOMBA DIRECCION/FRENOS), the hoist pump (BOMBA LEVANTE TOLVA), the hoist cylinders (CILINDROS HIDRAULICOS DE LEVANTE TOLVA), and the hydraulic filter and tank. It even covers the blower (SOPLADOR) and the inflation systems (INFLAMIENTO Y DICTO). The original manual is in Spanish, but the numbers and diagrams are universal. If you understand a hydraulic schematic, you can use this book.

Source Authenticity: Why Aftermarket Manuals Cost You Money

I have seen aftermarket manuals that copy the cover but change the torque specs to fit some generic database. That will ruin a $10,000 hoist cylinder. This Komatsu 730E Technical Manual is an original OEM publication – identical to what the dealer’s tech uses. It is not a reprint of a copy. It comes from our verified stock at AutoRepairManuals. When you see a page that says “NEUMATICOS 37.28 REST” and the hydraulic circuit for the levante tolva, you know it is real. The truck uses electric drive – not a Manual Transmission – so you need the factory electrical diagrams. And compared to a standard Manual Transmission, this system requires specific diagnostic procedures that only the OEM manual covers.

Who Needs This Manual? The Home Garage Mechanic and the Fleet Shop

Whether you are a heavy-equipment hobbyist with a single 730E or a fleet shop with ten of these trucks, the factory data matters. If you do suspension work on the HYDRAR II, you need the pre-charge pressures and alignment specs. If you are swapping the alternator, the manual tells you the pulley ratio and the output rating. I have talked to guys who spent two days chasing a hydraulic leak because they had a bad diagram. This manual gives you the exact routing from the filter to the hoist cylinders. Do not waste your time.

Is this manual in English?

No, it is the original factory manual in Spanish.

Does it cover the Cummins K2000E engine?

Yes, page 5 lists the Komatsu SSA16V16V159, which is the same as the Cummins K2000E. It gives all the basic engine specs, though specific overhaul steps are in the engine chapter.

What about the GE-70R traction motors?

The manual covers the CTA 2X drive system and the traction motors. The GE-70R data includes mounting, electrical connections, and system pressure specs. If you need the exact torque for the motor retaining bolts, that is in the traction motor section – but the OCR excerpt does not list that number. I would trust the factory page when you get it.

How do I know this is the factory manual and not a reprint?

We source directly from OEM suppliers. This is the official Komatsu 730E Technical Manual with the original part number, original layout, and factory hydraulics diagrams. The file name is KOMATSU_730E_Technical_Manual_es-35313016903.pdf. There is no conversion, no aftermarket editing – just the raw PDF as Komatsu printed it. I have seen shops pay extra for a reprint that calls the hoist cylinders by the wrong part number. This one is correct.

If you are working on a 730E, stop guessing. Access the Factory Manual from AutoRepairManuals today. You can also check related publications like the Komatsu 730E Workshop Manual or the Komatsu 730E Shop Manual for more in-depth procedures. For other Komatsu heavy equipment, see the DEMAG KOMATSU H285 S Hydraulic Calibration.