the oil can immediately flow to the bearings
and the time required by the oil to attain the
correct pressure is minimised.
If this instruction is ignored the bearing may get
damaged. The oil filter must be kept clean as far
as possible to protect the engine components
from rapid and excessive wear and tear due to
abrasion. Tighten the centre bolt to 4 Kg-m. torque.
Fig. 1-3 Cross-section of Lub-oil Filter
faulty injection nozzle operation may be the cause.
Generally, this is due to dirt in the fuel system.
If excessive black smoke is emitted on
acceleration, its could be due to drubbing of
Fig. 1-4 : Oil Filling Point on Engine
nozzles. Get the nozzles checked at MICO dealer
point.
Note : In case the old filter cartridge was found
damaged/punctured, the filter top cover
CHANGING ENGINE OIL
assembly should also be removed and
The engine oil should be drained while it is still hot.
refitted after thorough cleaning.
a. Unscrew sump drain plug and allow the oil
Proceed as below :
to drain out for 20 mins.
i. Remove the two screws holding the filter top
b. Unscrew filler plug of oil filter, drain out oil
cover to the crankcase and remove it with
and refit filler plug.
its gasket.
c. Unscrew centre bolt and remove oil filter
ii. Remove the bypass valve assembly and
bowl. Discard oil filter cartridge. The filter
clean the valve and its seat.
cartridge should not be cleaned or
iii. Clean all oil passage in cover thoroughly.
reused.
Replace "O' ring and seals if found
d. Check "O' ring and seal for any damage.
damaged.
Replace if found damaged.
iv. Reassemble bypass valve with new sealing
e. Clean the bowl thoroughly and insert a
washer if necessary.
new genuine fuel flow oil filter cartridge
into the bowl.
v. Fit new gasket on the cover.
f. During re-assembly of the oil filter, fill the
vi. Refit oil filter cover assembly to the
filter bowl with one litre of engine oil through
crankcase taking care that the gasket does
the drain plug and fit the filter bowl to the
not get damaged during fitment.
top cover and tighten the centre bolt to the
vii. Tighten evenly and equally the two mounting
specified torque. Before starting, crank the
bolts of cover to 6 Kg-m. torque.
engine with the help of ignition key, so that
Workshop Manual
S3.8 Engine
A030K288 (Issue 2)
01-2010
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