Eagle ICA-D212-725, Инструкция по эксплуатации

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ICA-D212-725 (71)
Page 3 of 28
CHAPTER 71 – POWER PLANT SYSTEM (71-00-00)
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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: 5
Date: 12.06.20
71.1 POWER PLANT SYSTEM
71.1.1 Power Plant – General
The T5317A/B/BCV gas turbine engine is a free
turbine power plant. The engine is a shaft
turbine engine with a two-stage, free-type power
turbine and a two-stage gas producer turbine
that drives a combination axial centrifugal
compressor. Five major sections of the engine
are air inlet, compressor, diffuser, combustor,
and exhaust. The maintenance procedures
outlined in the following paragraphs include only
those systems and controls that are not a part of
the basic engine. Maintenance and overhaul
instructions for the basic engine are found in the
applicable Honeywell Publications.
Tools Required
- - - - Hoist
LTCT773 Engine Sling
71.1.1.1 Removal – Power Plant
Remove engine from helicopter as a quick-
change assembly, with adapting parts attached
as outlined below. Preservation should be
accomplished, if applicable, before removing
engine.
71.1.1.1.1 Disconnect
battery.
71.1.1.1.2 Open engine cowling.
Disconnect starter generator air duct at top end,
release support tubes, pull pins at each end of
support beam and remove top sections of the
engine cowl.
71.1.1.1.3
Disconnect antenna and anti-
collision light connections under tailpipe.
Unfasten sections of tailpipe fairing and remove
from helicopter.
71.1.1.1.4
Remove air inlet cowl and
screening. Remove main input driveshaft.
(Refer to Chapter 63.)
71.1.1.1.5
Disconnect fuel and oil hoses,
electrical connectors and engine controls as
follows: (Refer to Figures 71-1 and 71-2.)
71.1.1.1.5.1
When disconnecting fuel and oil
hoses with shroud installed, loosen clamp to
allow shroud to be moved for access to hose
connection. Retain clamp and shroud with hose.
71.1.1.1.5.2 Disconnect oil and fuel hoses
and electrical connector at engine deck.
Disconnect bleed air hose at selector valve.
71.1.1.1.5.3
Disconnect oil pump outlet hose
at external oil filter. Disconnect fuel inlet hose at
fuel filter.
71.1.1.1.5.4
Disconnect droop compensator
control tube from cambox at left forward side of
engine. Disconnect power lever control tube at
power lever arm on fuel control.
71.1.1.1.5.5 Disconnect
electrical connectors
at forward firewall, fuel pressure transmitter,
engine oil filter switch and fuel filter bypass
switch. Remove clamps from wiring.
71.1.1.1.5.6
Disconnect breather hose and
oil inlet hose at oil tank.
71.1.1.1.6
Install suitable engine hoist.
71.1.1.1.7
Attach LTCT773 engine sling or
suitable type sling to lifting points on engine, and
connect to hoist.
71.1.1.1.8
Release fasteners on aft engine
firewall.
71.1.1.1.9
Remove V-band coupling (1,
Figure 71-1) which secures air intake bellmouth
to flange of engine inlet housing.
71.1.1.1.10 At
each engine mount pillow
block (2), open hinged bearing cap by loosening
nut on latching eyebolt. Remove forward left
engine mount tube assembly by removing bolt
and washer.