MD Helicopters MD Explorer - Anti-Torque Fan Balance Weight Change

CSP−900RMM−2 MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 208
Revision 35
18-00-00
9G18-005C
VIEW LOOKING FORWARD
13
12
11
10
9
8
7
6
5
4
3
2
1
BALANCE STUD ASSEMBLY
(13 PL, TYP)
5
4
2
6
1
3
1. ANTI−TORQUE FAN (REF. IPL, 64−30−01, FIG. 1)
2. BALANCE STUD
3. COLLAR
4. BALANCE WEIGHTS
5. NUT
6. AZIMUTH SENSOR INTERRUPTER RIVET
Figure 205. Anti−Torque Fan Balance Weight Adjustment
B. Anti−Torque Fan Balance Weight Change
(Ref. Figure 205)
(1). Remove baggage compartment closeout
panels and soft insulation panels (ref
Section 25-50-00).
(2). Remove anti-torque fan diffuser lower
half (ref. Section 53-00-00).
(3). Number balance studs (2) on anti-
torque fan (1) with a permanent
marker (ref. Figure 205).
(4). Add or remove balance weights (4) (ref.
Table 201) recorded from the NOTAR
Balance Solutions Menu Procedure (ref.
CSP-900RMM-3, Section 95-30-00).
NOTE:
 Thickness of balance weights (4) on bal
ance stud (1) cannot be more than 0.20
inch (5.1 mm).
 One gram of balance weight change gives
approximately 0.18 IPS of balance
change.
 If more than three weights are added at
one time, weigh the total number of
weights with a scale.
(a). Remove nut (5).
(b). Remove or install balance weights
(4), as necessary.
(c). Install nut (5) on balance stud (2).