Inspection Of Main Wheel Assembly - Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual

Table of Contents

THRUSH AIRCRAFT INC – MODEL S2RHG-T65 TURBO THRUSH

Remove bolts, washers and nuts and separate wheel halves. Guard valve stem

to avoid damage while removing tire and tube.

Remove brake disc from brake side of wheel. If disk sticks, pry out disc using

non-metallic instrument.

Remove bearing retainer snap ring, grease seal ring, and grease seal, spacer

and bearing cone from inboard side of wheel.

Wheel halves can be replaced individually. Wheel sets no

longer have to be replaced as match pairs.

Clean all parts in cleaning solvent and dry thoroughly. A soft bristle brush may

be used to remove hardened grease, dust or dirt.

Cleaning solutions are toxic and volatile.

ventilated area. Avoid contact with skin or clothing. Do not

inhale vapors.

Inspect bearing cones for nicks, scratches, water staining, spalling, heat

discoloration, roller wear, cage damage, cracks or discoloration.

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).

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.

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).

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:

Insert wheel half into boiling water for one (1) hour or place it in an oven at

250 degrees Fahrenheit for 30 minutes.

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.

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AIRCRAFT MAINTENANCE MANUAL

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