TB l-2835-205-20-3
( 1 ) Prepare the aircraft for safe ground maintenance.
( 2 ) Gain access to APU air screen assembly located between the turbine
and the re-
duction drive assembly.
(3) Cut
lacing from air screen assembly, spread screen ends, and separate air screen
assembly from turbine.
( 4 ) Locate six bolts previously concealed by air screen assembly (refer to figure 1,
8 of TM
bolt heads will be toward turbine assembly)
( 5 ) Perform torque check to verify 50 to 70 pound-inches torque above drag torque for each bolt.
Torque bolts as necessary.
(6) Apply torque-stripe across each bolt head.
Reposition and secure air screen assembly.
(8)
inspect torque-stripe on each bolt every
flight hours and retorque bolts if
until replacement self-locking bolts are available.
9. Correction
a . Requisition six replacement self-locking bolts (P/N
NSN 5306-00-l 17-9897) per APU
through normal supply channels.
b . Remove
screen assembly to gain access to the bolts.
In the following step, remove `and replace only one
bolt at a time. The replacement, e&f-locking
are
one-time
only.
c. Replacethe existing bolts one at a time with the new, self-locking
bolts and torque properly
(50 to 70 pound-inches torque).
d. Reposition and secure air screen assembly.
e . Remove from stock all bolts with P/N AN1 01118, NSN
f. Add pen and ink change
Figure I, Item 8, changing P/N AN1 01118, NSN
5306-00-l 17-9897 to P/N
3, NSN 5306-06-l 17-9697.
10.
and
a . Parts Required. Six replacement bolts (P/N
NSN 5306-00-117-9897) per APU.
b . Requisitioning Instructions.
replacement parts using
I supply procedures. All
requisitions shall use project code (CC 57-59)
(X-ray, Delta, X-ray).
NOTE
Project code
is required to track and establish
of stock fund
expenditures incurred by
field as a result of SOF actions.
c. Sulk and Consumable Materials. N/A.
d. Disposition. Dispose of removed parts/components using normal supply
accordance with Environmental Protection Agency Direc-
e . Disposition of Hazardous Material.
tives as implemented by your servicing environmental coordinator (AR 200-I).
11. Special
and Fixtures Required. N/A.
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