Inspection Of Main Wheel Assembly - Thrush Aircraft S2R–T660 Maintenance Manual

INSPECTION OF MAIN WHEEL ASSEMBLY

(Cleveland, Divided Type)
A. Clean all parts in cleaning solvent and dry thoroughly. A soft bristle brush may be used to
remove hardened grease, dust or dirt.
B. Inspect bearing cones for nicks, scratches, water staining, spalling, heat discoloration, roller
wear, cage damage, cracks or discoloration.
C. Inspect wheel-bearing grease for contamination and solidification (see Inspection Intervals
Chart in Section II). When repacking wheel bearings, use MIL-G-81322 (Aeroshell 22).
D. Inspect wheel halves for cracks, corrosion and other damage. A cracked or badly corroded
casting should be replaced. Small nicks scratches or pits can be blended out using fine 400-
grit sandpaper.
E. Inspect snap rings and grease seals for distortion or wear. Replace parts, if damage or
deformed. Saturate grease seal felts with SAE 10 oil (do not soak).
F. Inspect bearing cups for looseness, scratches, pitting, corrosion, or evidence of overheating.
The bearing cups are pressed into the wheel halves and should not be removed unless
replacement is necessary due to the above conditions. If replacement is necessary, proceed
as follows:
1. Insert wheel half into boiling water for one (1) hour or place it in an oven at 250
degrees Fahrenheit for 30 minutes.
2. Remove wheel half from source of heat and invert wheel half. If bearing cup does
not drop out, tap the bearing cup evenly from the axle bore with a fiber drift pin or
suitable arbors press.
6 -8
THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
Wheel halves can be replaced individually. Wheel sets no
longer have to be replaced as match pairs.
*** WARNING ***
Cleaning solutions are toxic and volatile. Use in a well-
ventilated area. Avoid contact with skin or clothing. Do not
inhale vapors.
* NOTE *
Effective: 12/17/03