Pitch Change Link Adjustment - MD Helicopters MD Explorer Servicing And Maintenance

(a). Press ENT.
(7). Use the ↓ key to select MAIN ROTOR
TRACK from second level menu.
(a). Press ENT.
(b). The display changes to: FLASH
STROBE BLD SPREAD <ON>.
NOTE:
Move strobe light in a ``W'' pattern while
pointed at the blade tip path in front of the
rotorcraft to find the reflective blade track­
ing targets.
(8). Fly rotorcraft at 80 KIAS and record
vertical position of each rotor blade
tracking tip.
(9). Fly rotorcraft at 100 KIAS and record
vertical position of each rotor blade
tracking tip.
(10). Fly rotorcraft at 120 KIAS and record
vertical position of each rotor blade
tracking tip.
(11). Set the track.
(12). Do the Main Rotor Balance (In-Flight)
procedure (ref. Procedure 1.H.).
E. Pitch Change Link Adjustment
(Ref. Figure 202)
Consumable Materials
(Ref. CSP−SPM)
Item Nomenclature
C702 Lockwire
(1). Remove and discard lockwire from nuts
(3). Loosen nuts.
NOTE:
To increase blade pitch turn pitch
change link barrel left (shorten). To de­
crease blade pitch turn barrel right (length­
en). If you turn barrel one flat you will
change track approximately one inch.
(2). Adjust pitch change link (1) as shown
by BMS solutions.
MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Figure 202. Pitch Change Link Adjustment
WARNING
(3). Make sure there is sufficient thread
(4). Hold barrel (4) and torque nuts (3) to
(5). Safety pitch change link nuts with
18-00-00
WITNESS
HOLES
3
1. PITCH CHANGE LINK
2. ROD END
3. NUTS
4. BARREL
Control Rod Thread Engage­
ment
engagement between rod end (2) and
barrel (4). Put lockwire in witness holes
at each end of barrel (4). If lockwire
goes through witness hole, pitch change
link is lengthened too much.
900 in-lb (101.68 Nm).
lockwire (C702).
CSP−900RMM−2
2
3
4
1
LENGTHEN
2
9G18-004
Page 203
Revision 35