SECTION 6
LYCOMING OPERATOR’S MANUAL
TROUBLE-SHOOTING
O-360 AND ASSOCIATED MODELS
TROUBLE
PROBABLE CAUSE
REMEDY
High Oil Temperature (Cont.)
Low grade of oil
Replace with oil conforming to
specifications.
Clogged oil lines or strainers
Remove and clean oil strainers.
Excessive blow-by
Usually caused by worn or stuck
rings.
Defective temperature gage
Replace gage.
Excessive Oil Consumption
Low grade of oil
Fill tankwith oil conforming to
specifications.
Failing or failed bearings
Checksump for metal particles.
Worn piston rings
Install new rings.
Incorrect installation of piston
Install new rings.
rings
Failure of rings to seat (new
Use mineral base oil. Climb to
nitrided cylinders)
cruise altitude at full power and
operate at 75% cruise power
setting until oil consumption
stabilizes.
2. TROUBLE-SHOOTING – TURBOCHARGER.
TROUBLE
PROBABLE CAUSE
REMEDY
Excessive Noise or Vibration
Improper bearing lubrication
Supply required oil pressure.
Clean or replace oil line;clean
oil strainer. If trouble persists,
overhaul turbocharger.
Leakin engine intake or exhaust
Tighten loose connections or
manifold
replace manifold gaskets as
necessary.
Dirty impeller blades
Disassemble and clean.
Engine Will Not Deliver
Clogged manifold system
Clear all ducting.
Rated Power
Foreign material lodged in
Disassemble and clean.
compressor impeller or turbine
6-4