53-52 Horizontal Stabilizer
Refer to R66 Illustrated Parts Catalog (IPC) Figure 53-29.
A. Upper Horizontal Stabilizer Assembly Removal
1. Remove upper vertical stabilizer assembly and lower vertical stabilizer assembly per
§ 53-51.
2. Remove hardware securing forward clamp to upper horizontal stabilizer assembly.
Cut and discard ty-raps securing position light and gearbox chip detector wires and
connectors together. Disconnect position light at connectors.
3. Support upper horizontal stabilizer, remove two bolts and associate hardware
securing stabilizer to tailcone casting, and remove assembly.
B. Upper Horizontal Stabilizer Assembly Installation
1. Position upper horizontal stabilizer assembly on tailcone casting. Install two bolts
and associate hardware securing stabilizer to casting; select bolt length to meet
torque requirements per § 20-30. Standard torque hardware per § 20-32, and
torque stripe per Figure 5-1.
2. Install upper vertical stabilizer assembly and lower vertical stabilizer assembly per
§ 53-51.
3. If C044-1 stabilizer was replaced, match drill C554 clips 0.144-inch diameter hole
through trailing edge of horizontal stabilizer. Deburr hole and install fastener.
4. Connect position light at connectors. Install hardware securing forward clamp
to upper horizontal stabilizer. Install MS3367-4-9 or -5-9 ty-raps as required to
secure position light and gearbox chip detector wires and connectors together.
Cinch ty-raps until snug without over-tightening, and trim tips flush with heads.
5. Test and verify correct function of position and TR chip light circuits.
C. Lower Horizontal Stabilizer Assembly Removal
1. Remove tail skid per § 53-54.
2. Refer to Figure 53-7. Using plastic scraper, remove sealant around edges where
lower horizontal stabilizer assembly brackets attach to lower vertical stabilizer
assembly doublers. Remove lower horizontal stabilizer assembly.
D. Lower Horizontal Stabilizer Assembly Installation
1. Refer to Figure 53-7. Position lower horizontal stabilizer assembly on lower vertical
stabilizer assembly and install tail skid per § 53-54.
2. Seal lower horizontal stabilizer bracket edges to lower vertical stabilizer doublers
using B270-1 sealant.
MAY 2015 Chapter 53 Fuselage Page 53.19
To Next Page
Loading...