Eagle ICA-D212-725, Instructions Manual

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ICA-D212-725 (63)
Page 104 of 144
CHAPTER 63 – MAIN ROTOR DRIVE SYSTEM (63-00-00)
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COPYRIGHT

2007 BY DART AEROSPACE LTD.

THIS DOCUMENT IS PRIVATE AND CONFIDENTIAL AND IS SUPPLIED ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED FOR ANY PURPOSE OR COPIED OR COMMUNICATED TO ANY
OTHER PERSON WITHOUT WRITTEN PERMISSION FROM DART AEROSPACE LTD.
Revision:
6
Date: 13.08.26
63.7.4 Input Drive Quill Seal
TOOLS REQUIRED
T101488 Wrench Set
NOTE
Refer to paragraph 63.7.4.1 for seal replacement
on 205-040-263-003 quill and paragraph 63.7.4.2
for 205-040-263-101 quill.
63.7.4.1 Replacement – Input Drive Quill
(205-040-263-003) Seal
63.7.4.1.1
Remove cowling and main
driveshaft, in accordance with paragraph 63.2.1.1.
63.7.4.1.2
Remove retaining ring (6, Figure
63-45) and grease retainer(S) with preformed
packing (4) from freewheeling clutch assembly (1).
Remove locking spring (3). Use T101488 wrench
set and remove nut (2).
63.7.4.1.3
Remove freewheeling coupling
assembly from splines of pinion and place on a
suitable work bench.
CAUTION
DO NOT ALLOW COUPLING OUTER RACE TO
MOVE AXIALLY RELATIVE TO COUPLING
INNER RACE, AS THIS COULD PERMIT
CLUTCH DRAG SPRINGS TO DROP OFF END
OF CLUTCH INNER RACE AND PREVENT
PROPER REASSEMBLY. TO PREVENT THIS,
CAREFULLY REINSTALL GREASE RETAINER
AND RING (WITHOUT PACKING) INTO
COUPLING OUTER RACE TO HOLD PARTS IN
PLACE DURING HANDLING.
63.7.4.1.4
Carefully remove seal wear sleeve
(19) from coupling outer race by using a hand-held
grinder to grind a groove almost through the old
wear ring. Use caution to avoid grinding through
wear ring and damage the race. Strike the wear
ring with a hard rubber mallet to pop the wear ring
off the race. Clean old adhesive from race with a
plastic scraper and Scotchbrite (C-407).
63.7.4.1.5
Inspect new seal wear sleeve (19)
and mating surface on coupling outer race for
damage. Any nicks or dents on OD of wear
sleeve are reasons for scrapping.
63.7.4.1.6
Installation of a new seal wear
sleeve (19) is accomplished by masking off the
outer surface of wear ring, cleaning and drying
inner surface of wear ring and mating outer
surface of outer coupling race. Scrub grease
removing primer (C-345) into the surface
thoroughly with Scotchbrite (C-407). This is a very
important step.
NOTE
The primer (C-345) must be thoroughly stirred
before use. Also, the solvent in the primer is
trichloroethylene, and should be used with
adequate ventilation.
63.7.4.1.7
Allow primer (C-345) to air dry to a
white powder. Remove dry powder with a clean,
dry cheesecloth. Apply only enough adhesive
promoter (C-327), in a well ventilated area, with a
brush to wet surface. Let promoter air dry a
minimum of 30 minutes at 65 to 85°F (18 to 29°C)
prior to applying adhesive (C-317).
NOTE
Adhesive (C-317) is a two-part component, 33
parts B to 100 parts A with a pot life of 40 minutes.
63.7.4.1.8
Assemble seal wear sleeve (19) to
coupling outer race with the use of a press.
Fabricate a suitable plate to bridge over the
coupling inner race so that uniform pressure may
be applied around entire circumference of wear
sleeve while installing, to avoid cocking and
distorting (Refer to Figure 63-46.) Install wear ring
with large radius at outer edge of coupling race
flush to 0.020 inch recess. Clean excess adhesive
from wear sleeve thoroughly and remove all
protective masking tape from seal bearing surface
of wear sleeve.
CAUTION