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DPX7500 DIESEL GENERATOR
CHAPTER 3 MAINTENANCE
3-1 Maintenance schedules
Keeping your generator well maintained will prolong the life of your generator. Everything needs to be
checked including the diesel engine, generator, control cabinet, and frame.
Before starting the maintenance, make sure the diesel engine is off.
Please refer to the Table 3-1 for the proper maintenance schedule.
time
After 1 month
Everyday
item
or 50hours
Check the fuel level and
_Before
refill
starting
Drain the fuel tank
_
Check and fill enough
_
engine oil
Clean the fuel filter
_after every
Check fuel oil leakage
operating
Check and screw each
_
fastered part
Check injector
Check injection pump
Cheak fuel pipe
Check the lube. oil level in
_before
the oil pan and refill
starting
Replace the lube. oil
_the first time
Clean lube. Oil filter
_the first time
Check the air cleaner
_the first time
element
Change the core of air filter
If damaged or smeary , change it in time
Check the battery liquid
_
level and refill
Adjusting the intake and
_the first time
exhaust valve clearance
Grind air intake and air
exhausted gate
Exchange piston ring
Check electric brush and
slide ring
Check insulation resistance
The time of stop is over 10 days
18
Every 3 month or
Every 6 month or 400
Every 1year or
200 hours
hours
1000 hours
_
_screw the bolt of
cylinder head firmly
_
_
_If necessary exchange
it
_the second time and
afterward
_the second time and
afterward
_the second time and
afterward
_the second time and
afterward
_
_
_
_
DPX7500 DIESEL GENERATOR
3-1.1 Changing the engine oil (every 200 hours)
1. Clean air-filter every 6 months or 400 hours of operation.
2. If necessary, exchange it.
3. Do not use detergent to clean air filter element.
Note:
Never start the engine without the air filter .
This can cause serious damage to the engine if
foreign objects enter the intake system.
Always change the air filter on time.
3-1.3 Fuel filter maintenance
1. The fuel filter should be cleaned often to keep the engine running at maximum
performance.
2. The recommended time period for cleaning the fuel filter is 6 months or 400
hours of operation.
a. To do this, first drain the fuel from the fuel tank.
b. Loosen the small screws on the fuel switch and remove the fuel filter
form the port. Use diesel fuel to clean the fuel filter. Also, remove the
fuel injector and clean the carbon deposit around it. The recommended
time period for this is 3 months or 200 hours.
3-1.4 Cylinder head bolt tensions
The cylinder head bolts should be tightened to specifications please refer to the
diesel engine manual for specifications and the special tools required to do
this.
19
Take the oil cover off. Remove the oil
drain plug when the diesel engine is still
hot. Be careful of hot oil and hot engine
as you may get burned.
The bolt is
located at the bottom of the cylinder.
After draining the oil, put the bolt back
and tighten it. Then fill with the proper
engine oil to the proper level.
3-1.2 Air filter maintenance schedule