CHECKS BEFORE TROUBLESHOOTING
Item
Judgement standard
1.
2.
3.
4.
5.
6.
7.
a.
9.
Check fuel level
Check for dirt or water in fuel
Check hydraulic oil level
Check hydraulic oil strainer
Check swing machinery oil level
Check engine oil level (Level of oil in oil pan)
Check cooling water level
Check condition of dust indicator
Check hydraulic oil filter
1. Check for loose or corroded battery terminals
Tighten or replace
2. Check for loose or corroded alternator terminals
3. Check for loose or corroded straight motor
terminals
Check for abnormal noise or smell
Check for oil leakage
Bleed air from system
1.
2.
3.
4.
5.
6.
7.
a.
Check battery voltage (engine stopped)
ZO-30V
_
Check level of battery electrolyte
Check for discolored, burnt, or bare wiring
-
Check for missing wiring clamps, hanging wires
-
Checks for getting wet onto wiring (check
carefully getting wet at connectors and
terminals)
_
_
Check for broken or corroded fuses
Check alternator voltage (engine running at over
half throttle)
Noise when battery relay is operated (switch
starting switch from ON to OFF)
27.5 - 29.6 V
Replace
_
_
-
-
-
_
_
_
-
-
_
-
_
_
Remedy
Add fuel
Clean, drain
Add oil
Clean, drain
Add oil
Add oil
Add coolant
Clean or replace
Replace
Tighten or replace
Tighten or replace
Repair
Repair
Bleed air
Replace
Add or replace
Replace
Repair
Disconnect connector
and dry connection
Replace
Replace
20-73
a
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