Download chapter 12 Engine Lubrication

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section iI Engine repair
312
Skill Drill 12-2
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Before you begin, clean up any oil
spills, obtain the oil drain container
Draining the Engine Oil
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(and make sure it has enough
room for the oil to be drained),
have enough new oil of the
­correct type to refill the engine,
have the correct oil filter, and
ensure that the engine oil is up
to operating temperature before
starting the oil change.
4
Allow the oil to drain while
you are dealing with the drain
plug, gasket, and oil filter (see
Skill Drill 12-3).
Identify the location of the oil
drain plug. Some vehicles have
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Screw in the drain plug all the
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two drain plugs, draining separate
sump areas. If the drain plug is
leaking, damaged, or does not
look right, inform your supervisor.
Use a box wrench or socket to
remove and replace the drain bolt.
Be careful that you do not remove
the transmission drain plug by
mistake.
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way by hand and then tighten it
to the torque specified by the
­manufacturer. Wipe any drips from
the underside of the engine.
only a minute or two of running. Always check that the
old O-ring was removed with the filter. If it was not, reach
up and peel it off of the filter mounting.
Third, when installing the spin-on oil filter, smear a
bit of oil on the surface of the O-ring. Doing so lubricates it
so that it will spin with the oil filter as it is being tightened.
Failure to lube the O-ring can cause it to bind and roll out
of the oil filter groove when the filter is being tightened.
Last, when installing the spin-on oil filter, it can be
hard to see how it is going on the threaded filter adapter.
If you get it cross-threaded, it will leak just like a doublegasketed O-ring. Plus you are likely to damage the threads
Position the drain pan so it will
catch the oil. Remove and inspect
the drain plug and gasket; replace
as necessary.
Safely dispose of the drained oil
according to all local regulations.
Technician Tip
To help judge how far to turn the filter to tighten it,
mark the outside of the filter with a marker or a dab of
oil (but remember to wipe the oil off when you have
finished). Do not overtighten the filter. Typically, threequarters to a full turn is adequate torque for a seal that
will not leak, but make sure to follow the tightening
instructions for the filter, which are on the filter and/or
the box it came in. Be careful not to cross-thread the
oil filter on the threaded adapter fitting.