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hitachi zaxis 470 starting problem

abedsunna

Well-Known Member
Joined
Sep 13, 2020
Messages
90
Location
Oman
hello

i have excavator hitachi 470 not starting in morning even weather not cold unless we spray eather inside air filter
any ideas please
 

Midnightmoon

Senior Member
Joined
Nov 9, 2013
Messages
445
Location
Ny
Next time dont use eather and pump the primer valve for fuel system until it's hard and try starting. If it starts easier you have a leak in the fuel system and your loosing the prime overnight. A hole in the return line or supply line, loose fuel filter, loose hose clamp. You wont see a viable leak
 

abedsunna

Well-Known Member
Joined
Sep 13, 2020
Messages
90
Location
Oman
i do pump the primer valve and i could hear the return NVR open from pressure still not working
i also check the fuel pipes and release the air but no air was inside
 

Midnightmoon

Senior Member
Joined
Nov 9, 2013
Messages
445
Location
Ny
Does the primer get hard? You have to pump it 50+ times to over come a potential leak. How many hours on the machine. Some systems have check valves that go bad in the fuel system. What's the serial number
 

abedsunna

Well-Known Member
Joined
Sep 13, 2020
Messages
90
Location
Oman
the primer get hard in about 5 times but not very hard as the NVR openes
Model / Type :ZX 470 LCH - 3F
IDENTIFICATION NUMBER : *HCM4 XM00V00024623*
 

abedsunna

Well-Known Member
Joined
Sep 13, 2020
Messages
90
Location
Oman
how to get into system to read the error codes please and error code list

like in 450 i can go throw the menue and read the error codes
 

abedsunna

Well-Known Member
Joined
Sep 13, 2020
Messages
90
Location
Oman
i have this errors
 

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mg2361

Senior Member
Joined
Jul 5, 2016
Messages
5,124
Location
Pennsylvania
Occupation
Equipment Mechanic
172-3 Intake Air Temperature Fault (Voltage too high, above 4.95V)
14006-2 Satellite Communication Terminal communication error
 

abedsunna

Well-Known Member
Joined
Sep 13, 2020
Messages
90
Location
Oman
Does the primer get hard? You have to pump it 50+ times to over come a potential leak. How many hours on the machine. Some systems have check valves that go bad in the fuel system. What's the serial number
hello friend
any idea what to test , i removed the injectors and send it for testing . it was not working so we fixed them but now it not working even with eather before fix the injectors and after
it looks have ni power coming to the injectors
 

abedsunna

Well-Known Member
Joined
Sep 13, 2020
Messages
90
Location
Oman
good morning
i do one try
i put the stop switch under the operator chair to off mode and do trigger the starter motor manually , the engine start . but once i put the switch no normal mode the engine stopped and the starter motor wont trigger from the starting key
 
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