ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL
Rev.
8
MM-8-39
Sep
20/17
8-10 Pylon
A. Pylon Removal and Installation
The pylon assembly supports all major structural and drive train components of the helicopter.
The removal and installation of the pylon is accomplished by completing the removal and
installation procedures for the following items:
(1)
Cabin Assembly
See Section 8-1
(2)
Tailcone Assembly
See Section 8-10
(3)
Main Rotor Transmission
See Section 11-6
(4)
Powerplant
See Section 13-2
(5)
Landing Gear
See Section 8-9
B. Pylon Inspection
Inspection is limited to a field survey of the pylon condition. Visually inspect all members of the
pylon for the following:
(1) Cracks
and
dents
(2)
Integrity of finish
(3)
Evidence of corrosion
(4)
Security of welded joints
(5)
Scuffing and abrasion
C. Pylon Repair
Damage to the pylon section tubes can be repaired in accordance with FAR 43. Special care
must be taken during such repairs as not to distort the structure. Remove minor surface
corrosion and paint the area using MIL-PRF-23377 primer or equivalent. Repair limit
10%
wall thickness (e.g., .0035” for a .035” thick wall).
8-11 Baggage
Compartment
A. Baggage Compartment Removal (See Figure 8-13)
1. Remove baggage compartment door as follows: (See Figure 8-13, View A)
(a) Remove panel (1) from kick-in steps.
(b) Release fastener screws (2) on upper cowling.
(c) Remove the two screws (3), washers, and nuts from upper hinge pin post at top
right corner of baggage compartment.
(d) Turn key latch and open door.
(e) Lift upper cowling to slide it from pivot pins on door and remove door assembly.
2. Remove upper and side cowling.
3. Remove sheet metal flanges (4) from the right side, outboard edges of the baggage
compartment.
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