Doosan 7/26E, Operation And Maintenance Manual

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70 ENGINE MAINTENANCE SCHEDULE
7/26E, 7/31E, 7/41
When performing the following items, the daily inspection items should also be carried out.
IMPORTANT:
Establish a periodic check plan according to the operating conditions and make sure to conduct checks at specified intervals. Otherwise,
malfunctioning may occur to shorten the engine life.
As special knowledge and skill are required for items marked with “ D ” , consult your local branch or distributor.
* The specific emissions related parts for the EPA/ARB regulations
“ C ”: Check “ R ”: Replace “ D ”: Contact your dealer
System Check item Daily
Periodic inspection interval
Every 50
hours
Every 250
hours
Every 500
hours
Every 1000
hours
Every 2000
hours
Fuel oil Fuel tank oil level check and refill C
Draining from fuel tank C
Draining from oil / water separator C
Cleaning oil / water separator C
Fuel filter replacement R
Engine oil Engine oil level C
Engine oil replacement
R
1st time
R
2nd & after
Engine oil filter replacement
Cooling water Check & addition cooling C
Radiator fin checking & cleaning C
Cooling fan V-belt checking & adjusting C
1st time
C
2nd & after
Cooling water replacement R
or every 1
year
Cooling water path flushing & maintenance D
Rubber hoses Fuel & cooling water pipe replacement D
or every 2
years
Operating
system Governor lever & accelerator check & adjust
C C
Intake and
exhaust Air cleaner element cleaning & replacement
C R
Electrical
equipment Battery electrolyte check and recharging
C
Cylinder head Adjust intake I exhaust valve clearance D
Lapping intake I exhaust valve seats D
Fuel valve
pump
*
Check fuel injection valve pressure & adjust D
Check & adjust fuel injection pump D