Eagle ICA-D212-725, Instructions Manual

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ICA-D212-725 (63)
Page 127 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
reinstall all firewalls, baffles, fairings, cowlings, and
access doors.
63.10 SERVICEABILITY CHECKS
63.10.1 Transmission
Serviceability
This procedure shall be performed when any doubt
exists as to serviceability of a transmission after
finding metal particles in oil.
63.10.1.1
Drain transmission, oil cooler, and
connecting lines. Insert magnet in pump screen
boss or plug boss to check for additional
contamination.
63.10.1.2
Flush oil cooler and connecting lines
with clean transmission oil (Chapter 12).
63.10.1.3
Clean and install chip detector plug,
pump inlet screen, and sump oil filter. Replace
external oil filter element.
CAUTION
NOTE CONDITION OF PACKINGS, SEALS, AND
GASKETS BEFORE INSTALLATION OF
TRANSMISSION. REPLACE PART(S) IF
DAMAGED.
63.10.1.4
Service transmission with clean oil
(Chapter 12).
63.10.1.5
Ground run helicopter (FMS-D212-
725-1) for one hour at 100% rotor rpm, with
maximum collective pitch that can be maintained
without becoming airborne.
63.10.1.6
Drain transmission oil into clean
container and inspect for chips. Inspect sump filter
and chip detector.
63.10.1.7
If number of particles has increased,
or if there are particles that can be visually identified
as chips or flakes from a gear or bearing, replace
transmission, mast assembly, and transmission oil
cooler, and flush oil lines. If number of particles has
decreased and only minute particles are found,
continue transmission in service.
63.10.1.8
After five hours of operation,
inspect sump filter and chip detector.
63.10.1.9
If the number of particles has
increased, or if there are particles that can be
visually identified as chips or flakes from a gear or
bearing, replace transmission, mast assembly,
and transmission oil cooler, and flush oil lines. If
the number of particles has decreased and only
minute particles are found, continue the
transmission service.
63.10.2 Intermediate or Tail Rotor
Gearbox - Serviceability
63.10.2.1
Remove, inspect, and clean
appropriate chip detector.
63.10.2.2
Drain gearbox oil into a clean
container. Inspect oil for chips.
63.10.2.3
Flush gearbox with clean oil
(Chapter 12). Inspect oil for chips.
63.10.2.4
Service gearbox with clean oil.
63.10.2.5
Accomplish ground run in
accordance with paragraph 63.10.1.
63.10.2.6 Repeat steps 63.10.2.1,
63.10.2.2, and 63.10.2.4 above.
63.10.2.7
If number of particles has
increased, or if particles can be visually identified
as chip or flakes from a gear or bearing, replace
gearbox. If number of particles has decreased
and only minute particles are found, continue
gearbox in service.
63.10.2.8
After 5 hours of service, repeat
steps 63.10.2.1, 63.10.2.2, and 63.10.2.4 above.
63.10.2.9
If the number of particles has
increased or particles can be visually identified as
chips or flakes from a gear or bearing, replace
gearbox. If number of particles has decreased
and only minute particles are found, continue
gearbox in service.