Section 12 ELECTRICAL SYSTEM
Subsection 01 (IGNITION SYSTEM)
A25E0VA
1
1
1
TYPICAL
1. Retaining screw
Example 1
When PTO flywheel mark is on right side of timing
tool slot, it indicates advanced timing.
F01H5UA
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1. Tooadvancedtiming
In this case, turn armature plate clockwise when
facing it.
Example 2
When PTO flywheel mark is on left side of timing
tool slot, it indicates retarded timing.
F01H5VA
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1. Retarded timing
In this case, turn armature plate counterclockwise
when facing it.
After adjustment, tighten armature plate retaining
screws.
CAUTION: Armature plate screws must have
Loctite 243 (blue) applied before tightening.
Make sure armature plate screws are well se-
cured.
Reinstall removed parts. Refer to MAGNETO
SYSTEM.
Recheckignition timing (make sure engine is cold).
Repeat armature plate positioning procedure if
timing mark position is not adequate.
787 RFI Engines
CAUTION: If the ignition timing is adjusted too
advanced, this will cause serious damage to
the engine.
VCK (Vehicle Communication Kit)
For the 787 RFI engines, use the VCK (Vehicle
Communication Kit) (P/N 295 035 981).
NOTE: For more information on the VCK, refer to
its online help.
B.U.D.S. (Bombardier Utility Diagnostic Software)
is designed, among other things, to allow adjust-
ing the ignition timing.
CAUTION: If the computer you are using is con-
nected to the 110 Vac power outlet, there is a
potential risk of electrocution when working in
contact with water. Be careful not to touch wa-
ter while working with the VCK.
smr2004-Complete Line Up 549
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