Doosan 10/215HA, Руководство по эксплуатации и техническому обслуживанию

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24 ENGINE INSTRUCTION MANUAL
9/235HA, 10/215HA
Battery cable connection
Check the battery cable connections for looseness or corrosion. A
loosened cable connection will result in hard engine starting or
insufficient battery charge. The battery cables must be tightened
securely. Never reverse “+” and “-” terminals when reconnecting
cables after disconnection. Even a short period of reverse connection
will damage the electrical parts.
Fig. 5
A. Battery cable
B. Connection
Battery electrolyte level
The amount of electrolyte in the batteries will be reduced after repeated
discharge and recharge. Check the electrolyte level in the batteries,
replenish with a commercially available electrolyte such as distilled
water, if necessary. The battery electrolyte level checking procedure
will vary with battery type.
CHECKS AND OPERATION AFTER START-UP
Check after the engine start-up
Check the following items in the engine warming-up operation:
• Engine oil pressure - The engine oil pressure gauge readings
(where fitted) may vary depending on ambient temperature and
type of oil. The gauge should register around 55 to 85 psi in the
warming-up period.
• Engine noise and exhaust smoke color - Listen to the engine
and, if any abnormal noise is heard, check to determine the cause.
Check the fuel combustion condition by observing the exhaust
smoke color. The exhaust smoke color after engine warm-up and at
no-load condition should be colorless or light blue.
Black or white smoke indicates incorrect combustion.
Leakage in the systems
Check the following items:
• Lubrication oil leakage - Check the engine for oil leaks, paying
particular attention to oil filter and oil pipe joints.
• Fuel leakage - Check the fuel injection pump, fuel lines and fuel
filter for leakage.
• Coolant leakage - Check the radiator and water pump hose
connections and the water drain cock on the cylinder block for
leakage.
• Exhaust smoke or gas leakage
Checking coolant level
The coolant level could drop because any mixed air is expelled in about
5 minutes after the engine started.
Stop the engine, remove radiator cap, and add coolant.
OPERATION AND CARE OF A NEW ENGINE
Your engine is carefully tested and adjusted in the factory, however,
further run-in is necessary. Avoid any harsh engine operation within the
initial 100 operating hours.
Do not operate the unit at full load until the engine is warmed-up.
Do not allow the engine to run unloaded for extended periods so as to
minimise the risk of cylinder bore glazing.
During operation, pay attention to the following points if the engine
shows any sign of abnormalities:
(1) Engine Oil Pressure - The engine oil pressure is monitored by a
switch that will stop the engine if the pressure falls below a pre-set
value.
If the oil pressure gauge shows below 30 psi or if the reading fluctuates
continually, stop the engine and check the oil level. If the level is
correct, contact your local Doosan branch or dealer to establish the
cause.
(2) Coolant Temperature - The engine performance will be adversely
affected if engine coolant temperature is too hot or too cold. The
normal coolant temperature is 75 to 85°C (167 to 185°F).
Overheating
If the Engine Coolant Temperature gauge (where fitted) shows an
overheat condition, or you have reason to suspect the engine may be
overheating, take the following steps:
• Close the service valve to reduce the load.
• Let the engine run at normal idle speed for two or three minutes. If
the engine coolant temperature does not start to drop, turn off the
engine and proceed as follows:
NOTE: Do not replenish with dilute sulfuric acid in the daily
service.
CAUTION: When inspecting the batteries, be sure to stop the
engine first.
As dilute sulphuric acid is used as electrolyte, be careful not to
contaminate your eyes, hands, clothes, and metals with the
electrolyte. If it gets in your eye, wash with a large amount of
water at once, then seek medical advice.
As highly flammable hydrogen gas is released from the
batteries, do not create a spark or allow any naked flame near
the batteries.
When handling such metallic articles as tools near the batteries,
be sure not to contact the “+” terminal because the compressor
body is “-” and a dangerous short circuit might result.
When disconnecting the terminals, start with “-” terminal. When
connecting them, connect the “-” terminal last.
NOTE: After start-up from cold the engine might be noisier and
the exhaust smoke color darker than when it has warmed up.
However this condition will disappear after warm up.
CAUTION: Hot steam can rush out and you could get burnt if the
radiator cap is removed when the engine is hot. Cover the
radiator cap with a thick cloth and loosen the cap slowly to
reduce the pressure, then remove the cap.
CAUTION: If you see or hear escaping steam or have other
reason to suspect there is a serious overheat condition, stop the
engine immediately.
CAUTION: To help avoid being burned:
Do not open the canopy or door if you see or hear steam or
engine coolant escaping. Wait until no steam or engine coolant
can be seen or heard before opening the engine canopy or door.
Do not remove the radiator filler cap if the engine coolant in the
reserve tank is boiling. Also do not remove the radiator filler cap
while the engine and radiator are still hot. Scalding fluid and
steam can be blown out under pressure if either cap is taken off
too soon.