Eagle ICA-D212-725, Instructions Manual

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ICA-D212-725 (63)
Page 44 of 144
CHAPTER 63 – MAIN ROTOR DRIVE SYSTEM (63-00-00)

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
63.5.3 Transmission Oil Pump
The oil pump (18, Figure 63-13) is mounted in the
underside of transmission sump case, and is
driven by reduction gears and a splined shaft.
63.5.3.1 Removal
63.5.3.1.1
Remove access door on front of
pylon support in cabin.
63.5.3.1.2
Drain oil from transmission sump
case (Chapter 12).
63.5.3.1.3
Remove oil pump inlet screen (17,
Figure 63-15). Remove drain tubes (11 and 15).
63.5.3.1.4
Remove nut (9) and washers (8),
and bracket (10), tee connection (14), nut (12),
and washer (13) together as an assembly.
63.5.3.1.5
Clean sealant from puller hole in
bottom center of pump (4) using a sharp plastic
scraper.
CAUTION
THREADED HOLE IS FOR ATTACHING
PULLER. DO NOT USE A JACKSCREW. DO
NOT LET PULLER BOLT BOTTOM OUT IN
THREADED HOLE OR PUMP MAY BE
DAMAGED.
63.5.3.1.6
Install slide hammer type puller
equipped with 1/4 X 28 UNF threads into center of
pump base.
63.5.3.1.7
Loosen jamnut on drain valve
(13A) and rotate counterclockwise.
63.5.3.1.8
Remove remaining nuts (7) with
washers (5 and 6).
63.5.3.1.9
Pull pump (4) downward from
sump case using puller to assist removal.
63.5.3.1.10
Remove and discard packings (2
and 3).
63.5.3.1.11
Cover opening in sump case (1).
63.5.3.2 Installation
MATERIALS REQUIRED
Refer to BHT-ALL-SPM for specification and
source.
NUMBER NOMENCLATURE
C-405 Lockwire
63.5.3.2.1 Install
new packings (2 and 3,
Figure 63-15) in grooves on oil pump (4).
63.5.3.2.2
Remove cover from opening in
sump case (1).
63.5.3.2.3
Warm sump case port with a heat
lamp, and lubricate packings and mating surfaces
with transmission oil to facilitate installation of
pump. Turn main rotor slowly as necessary to
obtain alignment of parts.
63.5.3.2.4
Insert pump (4) into mounting
port. Align pump shaft with internal splines of
transmission shaft (18) and align pump flange over
mount studs. Use a flashlight to verify
engagement of pump and shaft (18) through open
port of oil pump screen.
63.5.3.2.5
Install bracket (10), tee connection
(14), washer (13), and nut (12) on pump mounting
stud.
63.5.3.2.6
Install steel washer (8) and nut
(9). Position drain valve (13A) as required and
tighten jamnut.
63.5.3.2.7 Install
aluminum washers (5), thin
steel washers (6), and nuts (7). Torque nuts (7)
and nut (9) 50 to 70 inch-lbs. (5.6 to 7.0 Nm).
63.5.3.2.8
Connect drain tubes (11 and 15).
63.5.3.2.9
Install oil pump inlet screen (17)
with new, lubricated packing (16). Torque screen
(17) 300 to 400 inch-lbs. (33.9 to 45.1 Nm).