CHAPTER 5
PAGE 15
PAGE DATE: 12. June 2015
MAINTENANCE MANUAL EXTRA 300LT
Inspector:
Mechanic:
Date:
Serial No.:
Inspections
as specif
i
ed
eac
h
50 hours
eac
h
100 hours
O
1
15 Clean and flush the Inverted Oil System with a suitable
petroleum solvent, such as Varsol according to Lycoming
Operator’s and Maintenance Manual.
O
2
O O 16 Service engine with recommended lubricating oil in accord-
ance with chapter 12-10-04.
O O 17 Inspect condition of spark plugs (clean and adjust gap as
required, adjust per Lycoming Service Instruction 1042). If
fouling of spark plugs is apparent, rotate bottom plugs to
upper plugs and vice versa.
O O 18 Inspect spark plug cable leads and ceramics for corrosion
and deposits.
O O 19 Perform a hot engine differential compression check in
accordance with FAA AC 43.13-1A.
O 20 Inspect cylinders for cracked or broken fins.
O O 21 Check cylinders for evidence of excessive heat which is
indicated by discoloration.
O 22 Check fuel injector nozzles for loseness. Tighten to 6.8 Nm
(60 inch-pounds) torque. Check fuel lines for fuel stains
which are indicative for fuel leaks.
O O 23 Inspect rocker box covers for evidence of oil leaks. If
found, replace gasket; torque cover screws 5.7 Nm (50
inch-pounds).
O
3
24 Remove rocker box covers and check for freedom of valve
rockers when valves are closed. Look for evidence of ab-
normal wear or broken parts in the area of valve tips, valve
keeper, springs and spring seats.
SCHEDULED MAINTENANCE CHECKS
Maintenance Checks Schedule
1 each 300 hours
2 each 25 hours
3 each 400 hours
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