Hitachi ZAXIS 35U-5N User Manual (English)

Questions and Answers:

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ssnyderSep 1, 2025
Why do all actuators have no power on my Hitachi ZAXIS 35U-5N Excavators?
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  Sierra CuevasSep 1, 2025
  If all actuators on your Hitachi Excavators have no power, it could be due to a malfunction from a worn hydraulic pump, requiring replacement. The main relief valve set pressure in the control valve might be decreased, needing adjustment. A lack of hydraulic oil requires refilling. Also, the suction strainer in the hydraulic oil tank might be clogged, so clean it. Finally, air absorption from the oil suction side requires retightening.
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raymondmackenzieAug 31, 2025
What causes Hitachi Excavators engine to run irregularly?
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  Rebecca JacobsAug 31, 2025
  If your Hitachi Excavators engine runs irregularly, it could be due to a faulty fuel system or engine control system, both requiring repair and adjustment. Another possibility is water or air in the fuel system, which needs to be drained or bled.
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Brett AlvaradoAug 29, 2025
Why Hitachi ZAXIS 35U-5N Excavators batteries discharge quickly after being charged?
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  Jacob MorrisAug 30, 2025
  If the batteries in your Hitachi Excavators discharge quickly after being charged, the cause might be a shorted cable or battery separator, both needing repair or replacement. Another possibility is increased sediment in the battery, in which case you should replace the battery.
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Amy TaylorAug 28, 2025
Why hydraulic oil temperature increases in Hitachi Excavators?
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  Stephen HuntAug 28, 2025
  If the hydraulic oil temperature in your Hitachi Excavators is increasing, it might be due to a stained oil cooler, which needs cleaning. Also, check the engine fan belt tension and adjust if it is insufficient.
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Tracy GallowayAug 27, 2025
Why does my Hitachi ZAXIS 35U-5N Excavators engine stall soon after starting?
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  Miss Tammy BarnesAug 27, 2025
  If your Hitachi Excavators engine stalls soon after starting, the issue could be due to several factors. The idle speed might be too low, requiring repair and adjustment. A clogged fuel filter or pre-fuel filter (for ZX50U-5N, ZX60USB-5N models) could also be the cause; replace the fuel filter element after draining any water, or clean/replace the pre-fuel filter element. Additionally, a clogged air cleaner can lead to stalling, so clean or replace the element. The engine control system or injection pump might also be faulty, requiring repair and adjustment.
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Jacob StricklandAug 27, 2025
What to do if starter rotates on Hitachi ZAXIS 35U-5N but it won't start?
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  Michael AllenAug 27, 2025
  If the starter rotates but your Hitachi Excavators won't start, consider these possibilities: the machine might be out of fuel, so check for leaks and refill. There could be air in the fuel system, requiring you to bleed it. A clogged fuel filter is another potential cause; drain any water and replace the element. If the fuel is frozen, warm the fuel pump with hot water or wait for warmer temperatures. Alternatively, the injection pump or preheat system might be faulty, requiring repair and adjustment.
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trussellAug 25, 2025
What to do if coolant temperature is too high in Hitachi Excavators?
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  fwestAug 26, 2025
  If the coolant temperature in your Hitachi Excavators is too high, it could be due to several reasons. First, check if the coolant level is low and refill if necessary. Another possible cause is insufficient fan belt tension, which requires adjustment. Inspect the rubber hoses for damage and replace them if needed. A faulty thermostat or coolant temperature gauge can also cause this issue, and both would need replacement.
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Daniel DeanAug 25, 2025
How to fix Hitachi Excavators batteries that will not be charged?
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  cameron08Aug 25, 2025
  If the batteries of your Hitachi Excavators are not charging, the issue might stem from a broken battery separator, requiring a replacement. Alternatively, there could be a faulty regulator, which needs adjustment or replacement. A faulty ground line requires repair, or the alternator itself might be faulty, which means it needs to be repaired or replaced.