Description

Fiat Hitachi 850-3, 850LC-3, 870H-3, 870LCH-3 Training Manual

If you are wrenching on a Fiat Hitachi 850-3 or any of the 850LC-3, 870H-3, 870LCH-3 models, you know the drill: you need to know where every sensor, valve, and filter lives before you start pulling parts. Guessing costs time. That’s why this 76-page Training Manual exists. It is not a repair guide with torque sequences. It is a factory-produced document that shows you the exact layout of the cab, engine, hydraulic system, and undercarriage. Page 1 starts with the overview – front, side, rear views. You get a map of the machine.

Fiat Hitachi 850-3 Training Manual – Component Identification

Coverage begins with the cab in detail: standard and heavy-duty cab types, air conditioner units (two sections), interior panels, and the floor. Switch panels – right and left – are shown including the Overheat Switch. The Pilot Control Shut-Off Lever appears in two sections. If you are retrofitting a seat or adding a monitor, the Cab Interior section shows bolt patterns and wiring access points. This saves you from pulling panels blindly. The Emergency Engine Stop Switch location is on page 13 of the cab section.

Engine System Coverage: Cooled EGR and CKP Sensor

Engine compartment starts on page 21. You get the Main Fuel Filter, Pre-Fuel Filter, Oil Filter, and the Cooled EGR System – critical on these Tier 4 engines. The Common Rail and Sensors page shows rail pressure sensor locations. The CKP (Crankshaft Position) Sensor and Starter are on that same spread. Alternator and Air-Con Compressor layout, plus the Overheat Switch. The Air Cleaner section shows inner and outer elements. If you are chasing a no-start, the Data-Link Connector and Barometric Sensor locations are in the Electrical Compartment section. The ECM, Battery, and Relays are also mapped.

7 Hydraulic Sections You Can Reference

The hydraulic system is covered from the Pump Compartment through the Control Valve (two sections), Signal Control Valve, Solenoid Valve Unit, Accumulator, and Pilot Filter. The Pressure Sensor Brock (factory spelling) and individual Pressure Sensors are identified. Fuel tank and hydraulic tank with level switches are included. The Swing Device and Travel Device appear in the Undercarriage section. For any hydraulic leak or performance issue, this manual helps you locate the component without guessing.

Where Is the Emergency Engine Stop Switch?

This is the kind of detail you need in a pinch. The Emergency Engine Stop Switch is covered on page 13 of the cab section. It shows exact location and wiring. The Multi-Function Monitor and Rear Tray are also detailed. If you are training a new operator or technician, this manual shows them where the stop switch is before they climb in. That is safety insurance. The Cab (Heavy-Duty Type) and Cab (Standard Type) are shown separately, so you can pick the right layout for your machine.

Read the Cab Interior Section Before You Modify Seats

The Cab Interior and Cab Floor pages show mounting points and cutouts. If you plan to install aftermarket seats or floor mats, you need to see those factory dimensions. The Air Conditioner sections (1 and 2) show component locations. The Rear Tray (1) and (2) show storage compartments. This manual is a blueprint for the entire operator environment.

Factory Training Documentation vs Aftermarket Reprints

This is an original Fiat Hitachi training document – 76 pages, not a photocopy or a third-party compilation. Aftermarket manuals often redraw diagrams and lose detail. Here you get the factory PDF with the same content used at Technical Training Centers. The document code is TTLA-0682-ZX. When you need to identify a part or trace a line, you want the real deal. This manual is not a generic aftermarket print or a Manual Transmission guide; it is machine-specific. For troubleshooting procedures, pair it with the Hitachi ZAXIS 850-3 / 850LC-3 / 870H-3 Troubleshooting Manual. For broader operational principle, see Hitachi ZAXIS 250-3/280-3/350-3 Operational Principle or Hitachi ZAXIS 40U-2, 50U-2 Operational Principle.

Frequently Asked Questions

Does this manual include torque specs?

This manual does not list fastener torque values. It is a training document focused on component locations and system layouts. For torque specs, you need the factory service manual. However, knowing where the bolts are – like those on the Pump Regulator or the Coolant Temp Sensor – saves time when you are under the machine. Use this manual to identify the component, then apply the correct torque from the service manual. If you need diagnostics, the Troubleshooting Manual is a better choice. Refer to Hitachi ZAXIS 850-3 / 850LC-3 / 870H-3 Troubleshooting Manual for that.

Can I use this for the 850LC-3 model?

Yes. The manual covers 850-3, 850LC-3, 870H-3, and 870LCH-3.

Is this a service manual or training manual?

It is a Training Manual, not a service manual. It teaches you where components are located and how they are arranged. For repair procedures, get the service manual.

How many pages does it have?

76 pages of factory training content, delivered as a PDF.

Stop wasting time hunting for parts on your Fiat Hitachi excavator. Access the Factory Manual and get the full 76-page layout today. Install it on your tablet or print the pages you need. For general understanding of power transmission concepts, see Manual Transmission. It is the quickest way to learn the machine.