Cessna 150 Series Service Manual page 141

f. Wash lid, hollow stud and can in cleaning sol-
gasket and repeat test. If this gasket falls
vent and dry with compressed air.
off, install a new lid.
NOTE
g. Inspect adapter gasket seat for gouges, deep
scratches, wrench marks, and mutilation. If any
When installing a new filter element, it is
of these conditions are found, install a new adapter.
important that all gaskets are clean, lubri-
h.
Place a new filter element in can and insert
cated, and positioned properly, and that
hollow stud with a new metal gasket in place, through
the correct amount of torque is applied to
the can and filter element.
the filter hollow stud. If the hollow stud is
i.
Position a new lower gasket inside flange of lid.
under-torqued, oil leakage will occur. If
Place lid in position on can.
the hollow stud is over-torqued, the filter can
j.
Install filter assembly on adapter with a new
might possibly be deformed, again causing
upper gasket in place. While holding can to prevent
oil leakage.
it from turning, tighten hollow stud and torque to
20-25 lb-ft (240-300 Ib-in), using a torque wrench.
Lubricate rubber grommets in each end of new
k. Install parts removed for access, and service
filter element, upper and lower gaskets, and
the engine with proper grade and quantity of engine
metal gasket with clean engine oil or general
oil.
One additional quart of oil is required each time
purpose grease before installing.
Dry gaskets
filter element is changed.
can cause false torque readings, again result-
1. Start engine and check for proper oil pressure.
ing in oil leakage.
Check for oil leaks after warming up engine.
m. Again check for oil leakage after engine has
Before assembly, place a straightedge across
been run at a high power setting (preferably a flight
bottom of filter can. Check for distortion or
around the field).
out-of-flat condition greater than 0.010 inch.
n. Check to make sure that the filter has not been
Install a new can if either of these conditions
in contact with adjacent parts due to engine torque.
exists.
o. While engine is still warm, recheck torque on
hollow stud, then safety hollow stud to bracket on
After installing a new upper gasket on the lid,
can, and safety adapter nut to other bracket on filter
turn lid over. If gasket falls, try a different
can.
24-
1/2
1/2
1/16
1-7/32
-7/8 R (TYP)
1-5/32 R
2.135
MATERIAL: 4130 (Rc. 35-38)
ALL DIMENSIONS ARE INCHES
Figure 11-5. Wrench Adapter Fabrication
11-16