53-31 Lower Frames (continued)
B. Installation
1. Refer to Figure 53-2.
a. F046-1 (LH) only: Install hardware securing shackle and frame to F574-8
block (threaded). Special torque bolt per § 20-33, and torque stripe per
Figure 5-1. Install hardware securing frame to F574-5 block (insert bolt thru
G246-1 brace, inside baggage compartment). Standard torque bolt per §
20-32, and torque stripe per Figure 5-1.
b. F046-2 (RH) only: Install hardware, and G914-5 tab, securing frame to
F574-1 support assembly (access bolts from inside baggage compartment).
Remove finish from surface under braided wire terminal, if installed. Standard
torque bolts per § 20-32, and torque stripe per Figure 5-1.
2. Install hardware securing F046 lower frame to F574-10 block assembly (threaded).
Install hardware securing F020-1 frame weldment, firewall, and F046 lower
frame. Standard torque bolts per § 20-32, and torque stripe per Figure 5-1.
3. Verify rod end engagement in F174-1 support weldment is approximately
symmetrical with minimal preload. Adjust rod end extension on both sides as
required per § 5-33, and Figures 5-1 & 5-2; ensure rod extension is no more
than 1.10 inches. Install hardware securing weldment to lower frames, standard
torque bolts per § 20-32, and torque stripe per Figure 5-1. Remove tailcone
support.
4. Seal around frame weldment(s) at firewalls using B270-1 sealant.
5. Connect F049-03 harness assembly wires at plastic connectors, install hardware
securing clamps to firewall, and install ty-raps as required. Cinch ty-raps until
snug without over-tightening, and trim tips flush with heads.
6. a. F046-1 (LH) only: Install hardware securing power turbine governor control
cable clamps, F723-3 line assembly clamp, and firewall clamp to F046-1 lower
frame. Standard torque hardware per § 20-32, and torque stripe per Figure
5-1.
b. F046-2 (RH) only: Install hardware securing battery cable harness clamp,
external power block, and stiffener clamp to F046-2 lower frame. Standard
torque hardware per § 20-32, and torque stripe per Figure 5-1.
7. Install engine per § 71-10.
JUL 2020 Chapter 53 Fuselage Page 53.7
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