Hitachi ZAXIS 850-3 - User Manual

Hitachi ZAXIS 850-3

366 pages

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Serial No

20001 and up

PRINTED IN JAPAN (E) 2006, 02

This book is printed on recycled paper.

ZAXIS850

-3

•

850LC

-3

•

870H

-3

•

870LCH

-3

HYDRAULIC EXCAVATOR OPERATOR’S MANUAL

EM1JB-1-1

Hydraulic Ex ca va tor

PART NO.

EM1JB-1-1

850

-3

850LC

-3

870H

-3

870LCH

-3

URL:http://www.hitachi-c-m.com

URL:http://www.hitachi-c-m.com

Table of Contents

Other manuals for Hitachi ZAXIS 850-3

Workshop Manual28 pages

Questions and Answers

C
christopherandersonAug 20, 2025
Why won't my Hitachi ZAXIS 850-3 engine start?
- K
  Katie HartAug 20, 2025
  If your Hitachi Excavator's engine won't start, it might be due to a discharged battery. In this case, charge or replace the battery. Alternatively, check for disconnected, loose, or corroded battery terminals; repair any corrosion and tighten the connectors securely. It's also possible that the pilot control shut-off lever is lowered, so pull it up. Another potential issue is disconnected, loose, or corroded starter ground line terminals, which can be fixed by repairing corrosion and tightening the connectors. If the engine oil viscosity is too high, change it to one with an appropriate viscosity.
K
Kathleen JohnsonAug 26, 2025
What to do if Hitachi Excavators engine will not start due to a faulty electrical system?
- P
  Paul GardnerAug 26, 2025
  If the engine of your Hitachi Excavators won't start, the pilot control shut-off lever electrical system may be faulty, or the starter and/or electrical system could be malfunctioning. In these cases, it is best to consult your authorized dealer for assistance.
J
Jeremy ParkerSep 4, 2025
Why does my Hitachi ZAXIS 850-3 Excavators engine knock, run irregularly, or stop?
- J
  jimmy72Sep 4, 2025
  If your Hitachi Excavators engine is knocking, running irregularly, or stopping, several factors could be responsible. Check the engine oil level and add oil if it's low. Ensure the air intake system is clean. Inspect the feed pump strainer and clean or replace it if dirty. Other potential issues include plugged fuel filters (install new filters), low coolant temperature (thermostat not working correctly or too “cool”), or water, dirt, or air in the fuel system (bleed air). Also, the fuel shut-off linkage may need adjustment or repair. If these steps don't resolve the problem, the injection pump may be out of time or the injection nozzles may be dirty or faulty, requiring professional attention. You might also need to clean the fuel tank outlet screen.
W
William MurphyNov 9, 2025
How to fix a Hitachi Excavators that is hard to start?
- R
  roachkaitlynNov 9, 2025
  If your Hitachi Excavators is hard to start, begin by checking the fuel supply: add fuel if the tank is empty, ensure the correct fuel type is used, and drain and replace contaminated fuel. Verify the battery has sufficient power, charging or replacing it if necessary. Clean and tighten battery and starter motor connections to address poor electrical connections. Other checks include replacing air filter elements if plugged, removing air from the fuel system if the fuel filter is plugged, and switching on the fuel shut-off switch. Inspect the fuel system for leaks, bleed any air from the system, ensure the fuel feed pump plunger is correctly positioned and tightened, and clean or replace the feed pump strainer. Finally, open the fuel pre-filter cock. For issues like a faulty injection pump...
F
Frank GrossNov 13, 2025
What causes a Hitachi ZAXIS 850-3 Excavators engine to crank but not start?
- J
  John OwensNov 14, 2025
  Several factors can cause a Hitachi Excavators engine to crank but not start. These include: No fuel (add fuel), wrong fuel (use correct fuel), contaminated fuel (drain tank and add clean fuel), low battery power (charge or install new battery), poor electrical connection (clean and tighten battery and starter motor connections), a plugged air filter (replace elements), a plugged fuel filter (remove air from fuel system), a fuel shut-off switch that is off (switch on), leaks in the fuel system (check fuel system connections), air in the fuel system (bleed air), a fuel feed pump plunger that is up (push down and tighten knob), a dirty feed pump strainer (clean or replace), or a closed fuel pre-filter cock (open pre-filter cock). For issues related to the injection pump, wrong preheat line o...
B
Brianna StokesDec 1, 2025
What to do if my Hitachi ZAXIS 850-3 engine cranks but won't start?
- D
  Dr. William HerreraDec 1, 2025
  If your Hitachi Excavators engine cranks but won't start, there are several potential causes. First, ensure you have fuel and that it is the correct type and not contaminated; add fuel or drain and replace as necessary. Check for low battery power and charge or replace the battery. Inspect for poor electrical connections, cleaning and tightening battery and starter motor connections. Other possible issues include a plugged air filter (replace elements), a plugged fuel filter (remove air from fuel system), or a fuel shut-off switch that needs to be switched on. Also, check the fuel system for leaks and bleed any air present. Ensure the fuel feed pump plunger is down and tightened, and that the feed pump strainer and fuel pre-filter cock are clean and open, respectively. If none of these res...

Hitachi ZAXIS 850-3 Specifications

General

Brand	Hitachi
Model	ZAXIS 850-3
Category	Excavators
Language	English

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