Cleaning the Centrifugal
Lubricating Oil Filter
Stop the engine, and allow time
for lubricating oil to drain back to sump.
(1) Unscrew the cover nut and
lift off the filter body cover.
(2) Examine "O" ring
for damage, renew if necessary.
(3) Withdraw rotor assembly from
spindle and allow oil to drain from nozzle before removing from filter body.
Hold rotor body and remove rotor knurled nut. Separate the rotor cover from the
rotor body. Remove central stand tube.
(4) Remove sludge from the inside
of the rotor cover by means of a wooden spatula or suitably shaped piece of
wood and wipe clean.
(5) Clean and wash out the
central! stand tube using a suitable solvent ensuring that the strainer holes
are not blocked.
(6) Clean out nozzles with brass
wire to ensure free passage of oil. Examine top and bottom bearings in rotor
body to ensure that they are free from damage or excessive wear. Examine
"O" ring for damage renew if necessary.
(7) Re-assemble rotor complete,
tighten cover nut to 9.5 Nm - 10.8 Nm (7-8 lbft.).
(8) Examine spindle journals to
ensure that they are free from damage or excessive wear, remove cut-off valve
plug from filters only and remove cut-off valve assembly. Check that the spring and shuttle are
undamaged and free to move. Examine gasket for damage. Renew if necessary,
(9) Re-assemble cut-off valve
assembly.
(10) Re-assemble filter complete,
checking that the rotor assembly is free to rotate then replace filter cover
and tighten cover nut by hand until full resistance is felt.
(11) With the engine running
check all connections and joints for leakage.
Cleaning Engine Oil and Standard
Spin-On Type Lubricating Oil Filters
With the engine stopped, place a
suitable container of at least 148 litres (32.5 gal) beneath the drain plug.
Remove the drain plug and allow the oil to drain. This operation is best carried
out while the engine is still warm as the thinner oil will drain more
efficiently. White the oil is draining remove the three oil filters turning
them and clockwise with a strap wrench.
NOTE: Removal of oil filters will
allow an escape of oil from the filter header. It is therefore recommended that
a suitable container of at least 5 litres (1 gal) capacity is positioned under
each filter prior to removal. Wipe clean the sealing faces and threaded bosses
of the oil header. Smear engine oil on the captive rubber sealing ring and
carefully screw each new filter up to the o{l header using firm hand pressure
only.
Use only genuine Perkins oil
filters. The use of other filters may cause serious damage to the engine. Refit
the drain plug and fill the engine with the appropriate grade of new oil.(If
fitted) manually set the air shut off valves to the run position, hold the stop
lever in the stop position. Turn the key switch to the start position, and
crank the engine over until the oil pressure gauge registers 0.4 kg/cm2
(5lb/in2).
Continue cranking for a further
10 seconds which will ensure that oil has reached the turbocharger bearings.
Stop cranking the engine and visually check the engine for oil leaks, top up
the oil level.
Cleaning the Optional Changeover
Lubricating Oil Filters
These special duplex fitters are
normally intended for use on long running engines, or where a servicing
requirement may occur when it is impractical to stop the engine. For this
reason they are fitted with a three way change-over valve in the head which enables
the elements to be changed, one at a time, whilst the engine continues to run.
They are normally mounted on the engine, but may be remotely mounted, and
connected to the engine by means of flexible pipes.
NOTE: If the flexible connections
to the filter are removed for any reason, it is essential that they are
reconnected correctly to avoid unfiltered oil getting into the engine. Failure to change fitters when due can also lead to trouble from
unfiltered oil.
Changing the Filter Elements When
the Engine Is Stopped
All that is necessary is to
unscrew the canisters with a strap wrench as shown in Fig. 31, without moving
the change-over valve, as there is no pressure in the system when the engine is
stationary. The underside of the header is then wiped clean, and a smear of oil
applied to the sealing rings on the new canisters, before screwing them up by
hand and tightening them by no more than three quarters of a turn after the
seals contact the header. Check the filter for leaks after the engine is
restarted.
WARNING!! Reduce engine speed to
idling if changing the filters whilst the engine is running.
Changing the Filter Elements
without Stopping the Engine
The normal position of the
change-over valve is with marking on the valve spindle for the spanner showing
the leg of the inverted T pointing upwards when both filter elements are in
circuit. Turning tine valve with the spanner provided so that the leg of the T
points to the left, puts the right hand filter out of service, so that it may
be exchanged for a new one, fill the new filter with clean oil before fitting.
Turning the valve so that the leg points to the right, puts the left hand
filter out of service, so that this one can now be exchanged for a new filter
canister. The valve is then returned to its original position, so that both
elements of the filter are back in service. Check for oil leaks.
NOTE: Prepare for a small
spillage of oil from the filter as each canister is removed, by placing a container
of about 5 litres or 1 gallon capacity under the filter.
Note the piston jet filters which
can only be changed with the engine stopped.
1. Change right filter
2. Normal running position
3. Change left filter
4. Dirty oil into filter
5. Clean oil into engine
changing filter elements.jpg
As one of leading manufacturers of diesel generators in China, we are in the field of generator set
manufacturing more than 43 years. We not only provide Perkins 4000 Series
750KVA to 2250KVA power generator, but also produce 30KVA to 625KVA generating sets with Perkins engines.
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