Extra 300/SC - Page 60

MAINTENANCE MANUAL EXTRA 300/SC
CHAPTER 05
PAGE 22
PAGE DATE: 1. August 2014
O O 3 Inspect the brake disc for rust, excessive grooves, large cracks,
coning or other visible damage. Check if disc thickness is
more than 0.325in/8.255mm. Coning of disc in excess of
0.015 in /0.381 mm is cause for replacement.
O 4 Remove wheels and wheel bearings. Inspect wheel bearing
grease for contamination and solidification.
O 5 Inspect snap rings and grease seals for distortion or wear.
Replace grease seal felts if they are hard or contaminated.
Lightly saturate grease seals should be replaced if cracked,
dried out, or distorted.
O 6 Inspect wheel bearings for excessive wear or damage. Replace
on condition.
O 7 Repack bearings with MIL-PRF-81322F or later, Mobil Avia-
tion Grease SHC 100 or equivalent. Reinstall wheels and
secure.
O O 8 Check wheel bearing clearance and wheels for free rotation.
Tires
O O 1 Visually inspect tires for cuts, flat spots, and tread or sidewall
damage. If changing of tires is necessary follow the instruc-
tions, including off-aircraft inspection of wheels, presented in
the Cleveland Wheels & Brakes Component Maintenance
Manual.
O O 2 Check inflation pressure (2.6 bar/38 psi). Proper inflation
will provide maximum tire and wheel life.
Inspector:
Mechanic:
Date:
Serial No.:
Inspections
as specified
each 100 hours
SCHEDULED MAINTENANCE CHECKS
Maintenance Checks Schedule
each 50 hours