MD Helicopters CSP-900RMM-2, Servicing And Maintenance

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CSP − 900RMM − 2 MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 401
Revision 33
53-55-00
EMPENNAGE
REMOVAL / INSTALLATION
1. Empennage
A. Empennage Removal
(Ref. Figure 401)
(1). Remove tailboom/thruster fairings SL1,
SR1, and S2 (Ref. Section 53-40-00).
(2). Remove nuts (3) and washers (4) and
disconnect bond jumpers (1).
(3). Remove safety wire from bolts (5) and
discard. Remove bolts (5), washers (8),
and washers (18).
(4). Measure and record thickness of
washers (18).
(5). Remove safety wire from jam nuts (9)
and discard. Remove jam nuts (9) and
washers (11).
(6). Record location of shims (12) and
plastic washers (13).
(7). Put a support below the empennage.
(8). Remove bolts (10), washers (11), shims
(12), and plastic washers (13).
(9). Lift empennage up and to the left away
from damper safety pins, do not pull on
wire harnesses below empennage.
(10). Disconnect electrical connectors P310
(15) , P317 (16), and antenna coaxial
connector (if installed) and remove
empennage.
B. Empennage Installation
(Ref. Figure 401)
Consumable Materials
(Ref. CSP − SPM)
Item Nomenclature
C702 Lockwire
C216 Sealant, Fuel Resistant
(1). Put empennage above attach frames
and put a support below it.
(2). Connect electrical connectors P310 ,
P317 , and antenna coaxial connector (if
installed.
(3). Align empennage left mount with
damper safety pins and right mount
trunnions with bushings in right side of
attach frames.
(4). Install bolts, shims, washers, and
plastic washers. Use shims to get a
clearance of
0.00-0.002 in. (0.00-0.051
mm) between attach frames and
empennage.
(5). Align empennage and damper bolt
holes, install bolts and washers. Install
washers between empennage and
damper to get
0.00-0.010 in
(0.00-0.254 mm) compression on
damper. Torque bolts and safety with
lockwire (C702).
(6). Install two jam nuts on each bolt.
Torque inner jam nuts 20-30 in-lb
(2.26-3.39 N
w
m) . Torque outer jam
nuts to standard torque. Safety with
lockwire (C702).
(7). Prepare mating surfaces of empennage
and bond jumper for electrical bond
(Ref. CSP-SPM, Section 20-50-00).
(8). Install bond jumpers, washers, and
nuts. Torque nuts.
(9). Test bond jumpers for Class “L”
electrical bond (Ref. CSP-SPM, Section
20-50-00).
Sealant, Fuel Resistant (C216)
(10). Environmentally seal bond jumpers,
use sealant (C216) (Ref. CSP-SPM,
Section 20-50-00).
(11). Install tailboom/thruster fairings SL1,
SR1, and S2 (Ref. Section 53-40-00).