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Miscellaneous—Troubleshooting
Continued on next page KR46761,00013A2 -19-22SEP16-3/5
Symptom Problem Solution
Poor fuel quality Drain fuel and replace with quality
fuel of the proper grade.
Leaks in fuel system Locate source of leak and repair as
required.
Fuel tank inlet screen restricted or
missing
Clean or replace.
Excessive Oil Consumption
Incorrect engine oil
Drain crankcase and rell with correct
oil.
Oil leaks Locate source of leak and repair as
required.
Poor fuel quality Drain fuel and replace with quality
fuel of the proper grade.
Engine temperature too high
Check cooling system.
Air lters restricted or dirty Replace air lter elements.
Worn engine
See an authorized Hitachi dealer.
Engine Idles Poorly
Poor fuel quality Drain fuel and replace with quality
fuel of the proper grade.
Air in fuel system Bleed air. See Bleed Fuel System.
(Section 4-1.)
Air lters restricted or dirty Replace air lter elements.
Fuel lters restricted Replace lters. Bleed air. Clean fuel
tank inlet screen. See Bleed Fuel
System. (Section 4-1.)
Fuel lter not installed correctly Install new lter and O-ring. Ensure
proper O-ring seal. Bleed air. See
Bleed Fuel System. (Section 4-1.)
Diesel exhaust uid empty Rell diesel exhaust uid (DEF) tank.
See Relling Diesel Exhaust Fluid
(DEF) Tank. (Section 3-1.)
Engine speed control system
See an authorized Hitachi dealer.
Worn engine
See an authorized Hitachi dealer.
4-3-4
112321
PN=329
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