Reassembly And Installation - Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual

Table of Contents

THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH

When replacing a bearing cup, repeat step 1., and chill bearing cup in dry

ice for a minimum of 15 minutes.

Remove wheel half from source of heat and bearing cup from the dry ice.

Dry the chilled bearing cup and coat its contacting surfaces with zinc

chromate primer.

Install the chilled bearing cup into the bearing bore of the heated wheel

half. Tap bearing cup gently and evenly into place, using a fiber drift pin

or suitable arbor press.

Inspect wheel brake disc assembly for cracks, excessive wear or scoring, rust

and corrosion. Remove corrosion and blend out small nicks using fine (400 grit)

sandpaper. Replace brake disc if worn below wear limit of .395 inch (see Fig. 6-

2). Coning of disc in excess of 0.015 inch is cause for replacement of disc (see

Fig. 6-3).

Inspect self-locking nuts for self-locking feature. Replace nuts if they can be

turned onto the bolt past the self-locking section by finger.

Tires and tubes are balanced as individual units and marked at the time of manufacture.

The tire balance mark is a red dot. The tube balance mark is a yellow stripe on the

base of the tube. The following procedure is suggested as a guide for mounting the

tires in balance and installing the wheels.

Reassemble cone bearings, grease seals, felts and snap ring into the proper

wheel halves. Lubricate bearings. See Inspection of Main Wheel Assembly.

Inflate tube sufficiently to round it out.

Dust tube with a small amount of tube talc.

Insert tube into tire so that balance mark (yellow or white band) is radically

aligned with the tire balance mark (red dot).

Place outer wheel half into tire and pull tube valve stem through valve hole.

Turn tire and wheel half over and place inner wheel half into the tire and align the

bolt holes with the outer wheel half.

Place brakes discs into the inner wheel half and align bolt holes.

Install bolts through the inner wheel half and washers and nuts on the outer

wheel half.

Tighten nuts evenly and torque to 150 inch-pounds.

Uneven or improper torque may cause Bolt or wheel failure.

Inflate tube until beads seat on wheel flanges. Remove valves core and allow

tube to deflate.

Effective: 5/05/04

AIRCRAFT MAINTENANCE MANUAL