G80XW/XF, G115XW/XF, G150XW/XF, G200XW/XF - 50HZ
OPERATION & MAINTENANCE MANUAL
52
G100XW/XF, G135 XW/XF, G170XW/XF, G225XW/XF - 60Hz
STARTING AND STOPPING OF THE ENGINE
PREPARING FOR START
Check the following before starting the engine for the first
time after purchase.
1. Before starting an engine, check the levels of fuel,
coolant, and oil and replenish those fluids if required.
2. Check if engine oil level is between the upper and
lower limit of the oil level gauge. The upper and lower
limit of the oil level gauge indicate the maximum and
minimum of the engine oil level.
CAUTION
When replenishing engine oil, do not exceed the
maximum on the oil level gauge. Too much oil may
cause damage to the engine.
The oil required to fill the oil filters and pipes
depends upon the engine equipment and use and
must be determined individually at the time of initial
commissioning. Make a note of the determined
quantity.
3. Be careful not to mix foreign substances in fuel,
engine oil, or coolant while adding the fluid, and keep
the fluid clean while it is not in use. Use fuel, oil, and
coolant recommended by Doosan. Otherwise, critical
damage to the engine may occur.
STARTING THE ENGINE
Observe the following when starting the engine.
1. Insert key in start switch.
2. Move control lever to idle speed.
3. Turn key switch clockwise.
4. Do not operate for longer than 10 seconds at a time.
5. When engine starts release the key switch.
6. Adjust control lever for desired speed.
7. If engine fails to start, release the key, wait
approximately 1 minute, then operate starter again.
8. Avoid running the cold engine idle for any length of
time as this may cause increased wear due to
corrosion. Prolonged idling is harmful to the
environment.
CAUTION
On initial start of an overhauled engine or after long
periods without use, press shutdown lever in “stop”
position and operate starter motor for a few seconds
(max. 10) until oil pressure is indicated.
Ensure that the engine can not be started by
unauthorized persons.
RUNNING IN
It is recommended that new or overhauled engines
should not be operated at a load higher than
approximately 75% of the maximum load during the first
few hours of operation. Initial run-in should be at varying
speeds or load. After this initial run-in, the engine should
be brought up to fuel output gradually.
DURING OPERATION
CAUTION
Do not overload the engine. Do not exceed the
maximum permissible engine tilt. If faults occur, find
their cause immediately and have them eliminated in
order to prevent more serious damage.
1. Oil pressure.
During operation the oil pressure in the engine
lubrication system must be monitored. if the
monitoring devices register a drop in the lube oil
pressure, switch off the engine immediately.
2. Coolant temperature.
Operating an engine with too low coolant temperature
increases fuel consumption, abrasion of the cylinder
liner, and shortens the engine's life span.
3. Alternator.
In order to avoid damage to the alternator, observe
the following instructions while the engine is running.
1) Do not switch off the main battery.
2) Do not disconnect the battery or pole terminals or
the cables.
3) If during operation the battery charge lamp
suddenly lights up, stop the engine immediately and
remedy the fault in the electrical system.
4) Do not short-circuit the connections of the
alternator with those of the regulator or said
connection with ground, not even by briefly bringing
the connections into contact.
5) Do not operate the alternator without battery
connection of the alternator with those of the regulator
or said connections with ground, not even by briefly
bringing the connections into contact.
6) Do not operate the alternator without battery
connection.
