3) Re-Assembly Of Interference Suppression Box; 4) Installation Of Interference Suppression Box - Rotax 912 Series Maintenance Manual

Effectivity: 912 Series
AIRCRAFT ENGINES
MAINTENANCE MANUAL II

13.4.16.3) Re-assembly of interference suppression box

Generally in reversed sequence to dis-assembly. Consult in
any case the wiring diagram for the suppression box. Apply
Lithium grease to all cable connections to prevent leakage
current.
Put both electronic boxes into interference suppression box
and place foam rubber filling pieces in position. Connect mass
and primary wiring to ignition coils. Fit set of ignition coils into
suppression box using 4 countersunk screws M4x12. Secure
countersunk screws with LOCTITE
Arrange H.V. leads according to wiring diagram or to code on
suppression box cover, in bottom part of clip-plate. Add top
half, using 3 counter sunk screws M4x8, attach clip plate ass'y
by two cheese-hd. screws M4x12 to box wall. Secure all
screws, using LOCTITE
ignition coil support by cable retaining straps.
NOTE:

13.4.16.4) Installation of interference suppression box

For safety reasons don't expose suppression box to ambient
temperatures above 60° C (140° F) and if possible attach by
reason of vibration to aircraft frame. If for space reasons the
box must be fitted to engine, make absolutely sure to use
vibration absorbing mountings.
Verify all mass connections beginning from interference sup-
pression box right to the engine. Clean contact surfaces as
required and use footned spring washer at connection. See
Service Instruction SI-25-1994.
NOTE:
®
221.
® 221. Attach H.V. leads 1T and 3B to
As every suppression box is numbered and
essential data is registered under this number,
it should be stated on all inquiries.
Since design year 1992 the resistance spar-
ing plug 12mm DCPR7E was introduced,
see SB-912-01.
page 76
Initial issue, Jan. 01/2002