Page 39
Initial Revision
2020-12-10
ATA 61-07-19
8.5.
Extremely slow pitch change or no pitch change on ground
Cause:
1. Blocked oil line.
2. Residual oil in propeller piston.
3. Damaged pitch change mechanism.
4. Corrosion in the blade bearings.
Remedy:
1. Check beta tube and the electric actuator
2. Clean beta tube oil lines
N
OTE
:
T
HIS BEHAVIOR DOES NOT APPEAR AT ONCE AND GETS WORSE OVER TIME
.
I
T SHOULD BE OBSERVED
.
3. Contact manufacturer.
4. Repair propeller.
8.6.
Oil leakage (visible outside or hidden inside)
Cause:
Damaged seals
Remedy:
Replace gaskets or repair propeller.
8.7.
Rough running engine / propeller, possibly in limited RPM range only
Cause:
1. Bad static balance.
2. Bad dynamic balance.
3. Rotation of blade in outer blade ferrule
Remedy:
1. Rebalance statically.
2. Rebalance dynamically.
3. Check marking whether blade is rotated in outer blade ferrule.
If applicable, reset according to chapter 5.
Summary of Contents for MTV-28-2 Series
Page 16: ...Page 15 Initial Revision 2020 12 10 ATA 61 07 19 Drawing MTV 28 2 AZ R H P 1582 1...
Page 17: ...Page 16 Initial Revision 2020 12 10 ATA 61 07 19 Drawing Beta rod P 1587 X...
Page 25: ...Page 24 Initial Revision 2020 12 10 ATA 61 07 19...
Page 37: ...Page 36 Initial Revision 2020 12 10 ATA 61 07 19 Figure 20 balance weight B 486...
Page 38: ...Page 37 Initial Revision 2020 12 10 ATA 61 07 19 Figure 21 Boot B 683 6...
