TM 1-1520-238-23
Change 8
4-177
4.56.
NO. 1 OR NO. 2 ENGINE AFT INBOARD MOUNT/AFT LOWER MOUNT BUSHING
REMOVAL/INSTALLATION (AVIM)
4.56.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
4.56.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
Light duty laboratory apron (item 27, App H)
Industrial faceshield (item 129, App H)
Chemical protective gloves (item 154, App H)
10-ton hydraulic hand operated arbor press (item 236,
App H)
Adjustable air filtering respirator (item 262, App H)
Materials/Parts:
Lubricant (item 114, App F)
Sealing compound (item 165, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
67R3F
Attack Helicopter Repairer/Technical
Inspector
NOTE
This task is typical for No. 1 or No. 2
engine aft inboard or aft lower mounts.
4.56.3. Removal
a. Remove two aft inboard bushings (1) from
mount (2). Use arbor press.
b. Remove two aft lower bushings (3) from
mount (4). Use arbor press.
4.56.4. Cleaning
a. Clean internal bore of aft inboard and lower
mounts (para 1.47).
4.56.5. Inspection
a. Check mounts for cracks. None allowed.
b. Check mounts for corrosion (para 1.49).
c. Measure aft inboard link bushing mounting
hole inner diameter.
(1) If diameter exceeds 0.5015 INCH, replace aft
inboard mount.
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M04–3666
1
2
1
AFT
INBOARD
M04–3666
2
4
3
AFT
LOWER
