Teledyne TSIO-360-RB, Maintenance Manual

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12-9
12-5 IGNITION SYSTEM MAINTENANCE (Continued)
NOTE . . . If the engine is equipped with a right angle drive starter adapter and does not
freely turn in the opposite direction of normal rotation the starter motor must be removed
from the starter adapter. Some right angle starter drive adapters incorporate an over-riding
spring clutch design that restricts engine rotation in the opposite direction of normal rotation.
CAUTION . . . The importance of establishing and maintaining correct magneto to engine
timing cannot be overemphasized. Incorrect timing, in addition to producing a rough running
engine, can lead to detonation, pre-ignition and possible internal engine damage or failure.
MAGNETO TO ENGINE TIMING
WARNING
To prevent injury or death, before beginning maintenance on the ignition system,
insure that the magneto switches and master switches are in the off position the
aircraft battery is disconnected and all ignition leads are disconnected and removed
from the spark plugs. Attach a sign stating "Hot Magneto - Do Not Turn," on each
propeller blade.
In conducting magneto timing check, use a top dead center locator, protractor and pointer
such as the Eastern Electronics Model E25 Timing Indicator or equivalent.
Use the following basic timing procedure to insure that timing is accomplished in accordance
with the required specifications.
1. Remove all top spark plugs. Rotate the crankshaft to the start of the compression stroke
on the number one cylinder. Install the top dead center locator in the number one
cylinder spark plug hole.
2. Install timing disk of indicator on the crankshaft flange, propeller spinner or propeller
hub.
3. Turn propeller slowly in direction of normal rotation until the piston lightly touches the top
dead center locator.
4. Rotate the disc of the timing indicator until the 0° mark aligns with the pointer.
POSITIVE DEAD CENTER
LOCATOR INSTALLED.
PISTON LIGHTLY
TOUCHING
# 1 CYLINDER
NOTE: THE PROTRACTOR/TIMING INDICATOR
SHOWN IS USED WITH THE PROPELLER AND
SPINNER INSTALLED.
NORMAL DIRECTION
OF ROTATION.
ADJUST THE PROTRACTOR/
TIMING INDICATOR DIAL TO
THE 0
o TDC INDICATION.
350
TDC
10
FIGURE 12-4 TIMING POSITION STEP 1