TM 55-1520-240-23-11
MAINTENANCE ALLOCATION CHART
Section II
NOMENCLATURE OF END ITEMS
(1)
(2)
(3)
(4)
(5)
(6)
Maintenance Category
Group
Number
Component/Assembly
Maintenance
Function
AVUM
AVIM
DEPOT
Tools and
Equipment Remarks
050304
Centrifugal Droop Stop Springs and
Limiters
Inspect
-.-
Replace
-.-
278, 282
050305
Centrifugal Droop Stop Shrouds
Inspect
-.-
Replace
-.-
275
Repair
-.-
275
050306
Centrifugal Droop Stop Shroud
Shields and Base
Inspect
-.-
Replace
-.-
278
050307
Droop Stop Shroud
Replace
-.-
278
NOTE
AVUM level replacement is limited to removal and reinstallation of the same pitch varying housing.
0504
Pitch Varying Housing
Inspect
-.-
23
Replace
-.-
-.-
-.-
050401
Pitch Varying Housing Bearings
Replace
-.-
050402
Pitch Varying Housing Bearing Oil
Tank
Inspect
-.-
274
Service
-.-
Replace
-.-
273, 282
Repair
-.-
274
050403
Pitch Varying Housing Wear Sleeve
Inspect
-.-
Replace
-.-
227, 273
050404
Pitch Varying Housing Oil Seals
Inspect
-.-
Replace
-.-
T8, T11,
273
0505
Vertical Hinge Pin
Inspect
-.-
Replace
-.-
T79, 275,
282
050501
Vertical Hinge Pin Bearings
Inspect
-.-
273, 274
Replace
-.-
T10, T102,
242, 273
050502
Vertical Hinge Pin Bearing Oil Tanks
Inspect
-.-
273
Service
-.-
Replace
-.-
T33, 273,
282
B-29
