Troubleshooting - Hitachi ZW180 Operator's Manual

TROUBLESHOOTING

If any machine trouble has occurred, immediately repair it. Make certain the cause of the trouble and take necessary mea-
sures to prevent the reoccurrence of the same trouble. In case troubleshooting is difficult, or measures marked with * must
be taken, consult the nearest Hitachi dealer. Never attempt to adjust, disassemble, or repair the hydraulic and/or electrical/
electronic parts/components.
1. Engine
Consult the nearest Hitachi dealer for the engine troubleshooting.
2. Engine Auxiliaries
Problem
Batteries will not be charged.
Batteries discharges quickly
after being charged.
Coolant temperature is too
high.
3. Engine does not Start.
Symptom
The starter does not rotate.
Although the starter rotates,
the engine does not start.
Although the engine cranks,
running speed is low and
easy to stall.
Items with * mark: Consult your nearest Hitachi dealer.
TROUBLESHOOTING
Cause
Broken battery separator
Faulty regulator
Faulty ground line
Faulty alternator
Shorted cable
Shorted battery separator
Increased sediment in battery
Low coolant level
Loose engine fan V-belt
Damaged rubber hose
Faulty thermostat
Faulty coolant temperature gauge
Cooling system passages dirty
Radiator core or oil cooler core plugged
Radiator screen plugged
Cause
Reduced battery voltage
Increased resistance in the starter circuit
Faulty key switch
Damaged wire harness
Faulty battery relay
Blown slow blow fuse link
The forward/reverse selector lever is in either
the forward or reverse position.
Faulty starter
Use of poor quality fuel, insufficient fuel, lack
of fuel
Faulty glow plug
Air mixed in the fuel supply line
Faulty injection pump or nozzle
Reduced compression pressure
Deteriorated engine oil
Contaminated injection nozzle
Clogged fuel filter
Clogged feed pump strainer
Air mixed in the fuel supply line
11-1
Solution
Replace
* Adjust and replace
* Repair
* Repair and replace
* Repair and replace
* Repair and replace
* Clean
Add
Adjust
* Replace
* Replace
* Replace
Flush cooling system
Clean radiator and oil cooler
Clean screen
Solution
Charge the batteries. Replace
* Clean and/or retighten the battery
terminals and starter terminals
* Replace
* Repair or replace
* Replace
* Replace
Return to neutral.
* Repair or replace
Change fuel. Refill
* Replace glow plug
Bleed air
* Repair or replace
* Adjust
Change engine oil
* Replace
Replace
Clean
Bleed air