Checks Before Troubleshooting - Komatsu Galeo PC800-8 Shop Manual

SEN00789-02

Checks before troubleshooting

Item
1. Check of level and type of fuel
2. Check of fuel for foreign matter
3. Check of hydraulic oil level
4. Check of hydraulic oil strainer
Lubricating
5. Check of swing machinery oil level
oil, Coolant
6. Check of level and type of engine oil (in oil pan)
7. Check of coolant level
8. Check of dust indicator for clogging
9. Check of hydraulic oil filter
1. Check of battery terminals and wiring for looseness and
corrosion
2. Check of alternator terminals and wiring for looseness
Electrical
equipment and corrosion
3. Check of starting motor terminals and wiring for loose-
ness and corrosion
1. Check for abnormal noise and smell
Hydraulic,
2. Check of oil leakage
Mechanical
equipment
3. Bleeding air
1. Check of battery voltage (with engine stopped)
2. Check of electrolyte level
3. Check of wires for discoloration, burn, and removal of
cover
4. Check for released wire clamp and drooping wire
Electric,
5. Check of wires for wetness (Check connectors and termi-
electrical
nals for wetness, in particular)
equipment
6. Check of fuse for disconnection and corrosion
7. Check of alternator voltage (while engine speed is at mid-
dle or higher)
8. Check of battery relay for operating sound (When starting
switch is turned ON or OFF)
4
40 Troubleshooting
Criterion Remedy
— Add fuel
— Clean and drain
—
— Clean and drain
—
—
— Add coolant
— Clean or replace
— Replace
— Retighten or replace
— Retighten or replace
— Retighten or replace
—
—
— Bleed air
20 – 30 V Replace
— Add or replace
— Replace
—
Disconnect the
—
connectors and dry
— Replace
After operating for
several minutes: Replace
27.5 – 29.5 V
— Replace
Add oil
Add oil
Add oil
Repair
Repair
Repair
PC800, 850-8