62-11 Blade Boots
Refer to R66 Illustrated Parts Catalog (IPC) Figure 62-1.
A. Removal
1. Remove main rotor blades per § 62-10.
2. Place a suitable drain container below main rotor blade spindle assembly. Remove
two B289-2 bolts and drain fluid.
3. Remove outer boot clamp and hold boot back to expose inner boot clamp. Remove
inner clamp and peel boot from spindle. Boot inner portion may be sealed to spindle
with B270-1 sealant.
4. As required, use a plastic scraper and vacuum cleaner to remove old B270-1 sealant
from spindle area to be covered by boot inner lip. Avoid contaminating spindle
bearings with old sealant.
WARNING
Use only plastic scrapers to remove old sealant; chemical
removal is prohibited.
B. Installation
NOTE
C156-1 (Black) blade boots are standard; C156-2 (grey) boots
are optional for use in sub-freezing temperatures.
1. Visually inspect and verify boot is undamaged. Carefully stretch new boot over
spindle.
2. Solvent-clean surfaces clamped by boot inner lip. Properly position boot inner lip;
install C165-1 (inner) clamp assembly and tighten clamp to 2.850 ± 0.005 inch
outside diameter. Rotate spindle and verify adequate clearance between clamp
assembly and pitch horn.
NOTE
When installing inner clamp, ensure that shoulder of boot inner
lip is not wedged beneath clamp or clamp may loosen in service.
Inspect boot interior and verify no cuts or punctures.
3. Stretch boot outer lip over pitch horn flange. Rotate spindle and align pitch horn
arm bolt hole with spindle bolt hole. Install C165-2 (outer) clamp assembly and
tighten clamp. Verify security.
4. Fill pitch bearing housing per § 12-51.
Page 62.6 Chapter 62 Main Rotor MAY 2015
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