Anti-Torque Fan Assembly Balance; Anti-Torque Fan Balance Using Balance Monitoring System (Bms) In Iids - MD Helicopters MD Explorer Servicing And Maintenance

2. Anti−Torque Fan Assembly Balance
A. Anti−Torque Fan Balance Using Balance
Monitoring System (BMS) in IIDS
Rotor Vibrations
WARNING
(1). Start one engine, refer to current
Rotorcraft Flight Manual (Ref. Section
01-00-00, Table 201).
(2). Set main rotor RPM to 100% for two
minutes.
NOTE:
D Make sure directional control pedals are
set to approximately one inch forward
right pedal to get minimum fan pitch be­
fore you do this procedure.
D You can also look at the torque indication
on the IIDS and move directional control
pedals to get the lowest torque indication.
This will give you an accurate indication
the fan is at minimum pitch.
MD Helicopters, Inc.
Rotorcraft Maintenance Manual
(3). Do the NOTARr Balance Collect Data
(4). Do the Display NOTARr Measurements
NOTE:
permitted.
(5). Do the NOTARr Balance Solutions
NOTE:
(6). If necessary, change anti-torque fan
(7). If necessary, do steps (1). thru (6).
18-00-00
Menu procedure (Ref. CSP-900RMM-3,
Section 95-30-00)
Menu procedure (Ref. CSP-900RMM-3,
Section 95-30-00).
No more than 0.15 IPS fan balance is
Menu procedure (Ref. CSP-900RMM-3,
Section 95-30-00). If necessary, record
recommended balance adjustment.
Try to balance the fan to (0.05 IPS).
balance weight.
again.
CSP−900RMM−2
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