Hitachi ZX35U-2 - User Manual

Questions and Answers

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Tina ArmstrongAug 19, 2025
How to troubleshoot a Hitachi ZX35U-2 engine that does not start?
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  Miguel PetersonAug 19, 2025
  If your Hitachi Excavator's engine won't start, several issues could be the cause. It could be due to a dead battery, in which case you should recharge or replace it. A faulty starter might also be the culprit, requiring repair or replacement. Check for loose or corroded connections and clean/tighten them. If the engine is too cold, preheat it by warming up the coolant. Air in the fuel system can also prevent starting, so thoroughly bleed the air. Make sure there is enough fuel, and if the fuel filter is restricted, clean or replace it.
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Angel WhiteAug 21, 2025
Why does my Hitachi ZX35U-2 engine overheat?
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  Michael BenjaminAug 21, 2025
  If your Hitachi Excavator engine overheats, it could be due to several reasons. First, check the coolant level and look for any leaks, adding coolant and repairing any leaks as needed. Next, inspect the fan belt for looseness or oil contamination; adjust or replace it accordingly. Also, inspect the radiator fins for clogging or bending, clean or repair them. Finally, a malfunctioning thermostat can cause overheating, so consider replacing it.
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Marcia PageAug 25, 2025
What to do if my Hitachi Excavators engine stalls?
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  Carrie HoAug 25, 2025
  If your Hitachi Excavator engine stalls, it could be due to a lack of fuel in the fuel tank, so refuel. Another potential cause is air in the fuel system, in which case you should re-tighten the connections and bleed the system.
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Christopher GomezAug 26, 2025
Why won't the starter rotate on my Hitachi Excavators?
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  David DoughertyAug 26, 2025
  If the starter on your Hitachi Excavator doesn't rotate, it could be due to a few reasons. A harness failure could be the cause, so inspect and repair it. Low battery power can prevent the starter from working, so charge the battery. Loose or corroded battery connections can also be the problem, so clean and tighten them. Lastly, a faulty key switch could be the issue, requiring replacement.
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Mrs. Amanda MoralesAug 28, 2025
Why is my Hitachi Excavators engine knocking?
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  zachary98Aug 28, 2025
  If your Hitachi Excavator engine knocks or runs irregularly, the fuel filter might be restricted, so clean or replace it. Air in the fuel system could also be the cause, so re-tighten the connections and bleed the system. Another possible reason is a restricted air cleaner, so clean or replace the element.
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shornAug 30, 2025
What causes low engine oil pressure in Hitachi ZX35U-2?
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  Timothy ObrienAug 30, 2025
  If you notice low engine oil pressure in your Hitachi Excavator (the engine oil pressure indicator comes on), it could be due to insufficient engine oil, so add oil. Check for oil leaks at the connections and repair them if necessary. It could also be due to a faulty oil pressure switch, so replace it.
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Jennifer OrtegaSep 1, 2025
Why does the alternator indicator stay on in my Hitachi ZX35U-2 Excavators?
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  Thomas CainSep 1, 2025
  If the alternator indicator on your Hitachi Excavator doesn't turn off after starting the engine, it could be due to alternator failure, so replace it. Another possible cause is harness failure, in which case you should inspect and repair it.
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Jennifer UnderwoodSep 3, 2025
Why aren't the monitor indicators working on my Hitachi ZX35U-2 Excavators?
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  Rita RogersSep 3, 2025
  If the monitor indicators on your Hitachi Excavator don't come on, or the gauges don't operate, it could be due to a blown fuse, so replace it. A sensor failure could also be the cause, so replace the sensor. Another possibility is harness failure, so inspect and repair the harness. Finally, burned indicator bulbs could be the issue, so replace them.
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Wesley Joseph MDSep 5, 2025
Why does my Hitachi Excavators not travel smoothly?
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  Andrew MaddoxSep 5, 2025
  If your Hitachi Excavator doesn't travel smoothly, there are several potential causes: * The track might be too tight (sag), so adjust the track sag. * Foreign matter, like rocks, might be stuck in the tracks, so remove it. * A counterbalance valve failure could be the problem, so replace it. * The travel motor performance might have dropped, so replace it.
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Holly GomezSep 7, 2025
What causes a Hitachi Excavators to mistrack?
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  madison36Sep 8, 2025
  If your Hitachi Excavator is mistracking, it could be due to unequal track sag on both sides, so adjust the track sag properly and equally on both sides. Another cause could be hydraulic pump performance drop, so replace the pump. An oil leak inside the control valve might also be the issue, so replace the control valve.

Summary

SAFETY

RECOGNIZE SAFETY INFORMATION

UNDERSTAND SIGNAL WORDS

FOLLOW SAFETY INSTRUCTIONS

Emphasizes reading and following all safety signs and manual messages.

MOVE AND OPERATE MACHINE SAFELY

General precautions for safe machine movement and operation around others.

PARK MACHINE SAFELY

Provides steps for safely parking the machine to prevent unauthorized movement.

OPERATOR’S STATION

PEDALS, LEVERS AND MONITOR PANEL

SEAT BELT (OPTIONAL)

OPERATING THE ENGINE

BEFORE STARTING ENGINE

Outlines pre-start checks and procedures for safe engine operation.

STARTING ENGINE

Provides step-by-step instructions for starting the engine in normal temperatures.

STOPPING THE ENGINE

DRIVING THE MACHINE

TRAVEL LEVERS AND PEDALS

Explains how to operate the travel levers and pedals for machine movement.

PRECAUTIONS FOR TRAVELING ON SLOPES

Outlines critical safety measures for operating on inclines and slopes.

OPERATING THE MACHINE

CONTROL LEVER (ISO EXCAVATOR PATTERN)

Explains the control functions for the ISO excavator pattern.

MAINTENANCE

DAILY INSPECTION

Lists inspection points for the engine, upperstructure, undercarriage, etc.

TROUBLESHOOTING

1. Engine

3. Hydraulic System

SPECIFICATIONS

Hitachi ZX35U-2 Specifications

General

Operating Weight	3, 500 kg
Engine Model	Yanmar 3TNV88
Bucket Capacity	0.12 m³
Travel Speed (Low / High)	2.5 / 4.5 km/h
Overall Length	4, 285 mm
Overall Width	1740 mm / 5 ft 9 in
Overall Height	2, 540 mm
Transport Length	4, 285 mm
Transport Width	1740 mm / 5 ft 9 in
Transport Height	2, 540 mm
Rated engine speed	2400 rpm