Bearings

5.2.2.10

Ball Bearing.

5.2.2.10.1

The bearing is a press fit on the crankshaft.

If either bearing or crankshaft is to be replaced, the bearing should be

removed in an arbor press.

To install, heat bearing in hot (325 max.)

oil. Place crankshaft in a

hot, it will be a slip fit on

vise with bearing side up. When bearing is

crankshaft journal. Grasp bearing with the

shield down and thrust it

on the crankshaft. The bearing will tighten

on while cooling. DO NOT

QUENCH.

TABLE 12

MAIN BEARING REJECT SIZE

CHART

Reject Size

Engine Model

P. T. O.

Magneto

.878

SX- 1086

5.2.2.10.2

Replacing Magneto Bearing (Aluminum Cylinder Engines ).

There is no removable bearing in these models, so the cylinder must be

reamed out so a replacement bushing can be installed.

Place guide bushing in the sump bearing with flange of guide bushing to-

ward inside of sump.

Assemble sump on cylinder. Be careful that guide bushing does not fall

out of place. Place guide bushing into the oil seal recess in the cylinder.

This guide bushing will center the counterbore reamer even though old

bearing might be badly worn.

Place counterbore reamer on pilot and insert into cylinder until the tip of

the pilot enters the guide bushing in the sump.

Turn reamer clockwise with a steady even pressure until it is completely

through the bearing. Ream dry.

Remove sump and pull reamer out without backing it through the bearing.

Clean out reaming chips. Remove guide bushing from oil seal recess.

Hold the new bushing against the outer end of the reamed out bearing, with

the notch in bushing aligned with the notch in the cylinder. Note the position

of the split in the bushing. At a point in the outer edge of the reamed out