Engine Maintenance; Prevention Of Damage And Abrasion; Prevention Of Pollution; Handling Of Engine Oil - Doosan DP158L Series Operation & Maintenance Manual

1. General introduction

Engine maintenance

Prevention of damage and abrasion

Using an engine for any purposes other than the designed
purpose may cause critical faults to the engine for which
Doosan shall not be held liable. For details concerning the
usage and purpose of the engine, please direct questions to
Doosan Sales Team. Do not adjust, convert, or change the
ECU without Doosan authorization.
If a problem is found in an engine, figure out and solve the
cause to prevent the critical faults in advance.
Use of genuine parts is recommended. Using unauthorized
or remanufactured parts may cause critical damage and
faults to engine for which Doosan shall not be held liable.
Consider the following while managing engines.
1. Use clean, specified, and qualified fuel only. Use fuel
recommended in this Operation and Maintenance
Manual.
CAUTION
Using inappropriate or unspecified fuel may cause crit-
ical damage and faults in engine performance.
2. Do not operate an engine without lubrication oil or
coolant. Use only the products (engine oil, cooling water,
anticorrosive agent, and etc) recommended by Doosan.
3. Always keep surroundings of the engine clean.
4. Use fuel recommended in this Operation & Maintenance
manual.
5. Conduct inspections and exchanges regularly according
to the regular inspection table.
6. If the engine is overheated, do not stop it immediately,
but operate it at idle status for five minutes or more to
lower the engine temperature to the proper level.
WARNING
If the radiator cap is opened while the engine is still hot,
hot water will spurt out and may cause burns.
7. Check the engine oil level on a flat surface. Do not
exceed the maximum of the oil level gauge.
CAUTION
Immediately replenish engine oil when the engine oil
level is below the lower limit of the engine oil gauge.
8. If there are gauges for battery, oil pressure and coolant
and temperature, check if they indicate a normal status.
9. Do not operate engine without coolant.
Always use coolant mixed with antifreeze. If coolant
without antifreeze is used, the coolant may freeze
causing the coolant passage in the cylinder block to
freeze and damaging the engine.

Prevention of Pollution

Consider the following to manage engine without causing
environmental pollution.
1. Discharge oil and coolant using collection containers.
2. Discard oil and coolant according to the regulations of the
relevant authorities.
3. Be careful not to let discharged oil and cooling water flow
into the ground or the sewer. Otherwise, serious pollution
of the drinking water source may occur.
4. Classify the oil, filters, and filter cartridges as environ-
mental pollution wastes and discards them according to
regulations.
5. Classify the antifreeze, cooling water, and anticorrosive
agent as hazardous wastes and discards them by
observing the regulations.

Handling of Engine Oil

Prolonged and repeated contact of skin with engine oil may
cause skin to dry out and contract, causing dermatitis.
Engine oil includes substances toxic to the human body.
Handle engine oil by observing the following safety rules:
1. Do not expose skin to used engine oil for a long time.
2. Always wear working clothes and gloves.
3. If skin comes in contact with engine oil, immediately wipe
it off with water, soap or hand cleaners.
4. Do not clean skin with gasoline, fuel, thinner, or solvent.
5. Apply a skin care cream after cleaning from oil.
6. Do not put oil-stained gloves or cloth in ones pocket.
Discard oil according to the regulations set forth by the
relevant authorities. Disposing of discharged oil into
the ground, sewers, drains, rivers, or the sea will cause
serious environmental pollution. Violation of regula-
tions regarding discard of engine oil without observing
the handling regulations, will be punished.
8
CAUTION
WARNING