Shindaiwa 357 Service Manual download pdf (Page 83)

Q Shindaiwa Inc. 1995 83

CRK-74

Engine Crankcase Section 8

STEP 2. Using an appropriate bearing driver

and a soft-faced hammer, carefully tap

each bearing from its bore in the crankcase

(Figure 8.13).

IMPORTANT!

Bearing removal is generally unnecessary

unless the engine has suffered a major

internal failure, has extremely high hours, or

has ingested large amounts of debris. If a

bearing must be removed, however, always

replace it with a new one. For maximum

performance and service life, use only

Shindaiwa factory replacement bearings as

listed in the accompanying table.

If bearing removal is difficult, the bearing

bore can be expanded slightly by using a heat

gun to pre-heat the bearing bore to not more

than 210°F (Figure 8.14).

■ Clean all parts in solvent and blow dry with

compressed air. Stubborn gasket com-

pound or sealant can be removed with

acetone, or can be softened with paint

remover.

■ Residue can be carefully scraped from

sealing surfaces with a plastic scraper or

conventional gasket scraper, but be

extremely careful to avoid nicking or

scratching crankcase sealing surfaces.

WARNING!

Wear eye and skin protection when

working with any solvent or paint remover.

Follow manufacturers instructions as to

other safety and disposal precautions!

Crankshaft bearings (Figure 8.15)

Inspect both crankshaft bearings for damage

or accumulated debris. Shindaiwa engines are

high performance engines and require

premium bearings for maximum performance

and service life.

■ Inspect bearings visually and manually.

Carefully spin each bearing by hand.

■ Replace any bearing that feels “rough” or

appears to “catch” when rotated.

Soft-faced

Hammer

Figure 8.13 Removing Bearing with a Driver

CRK-61

Figure 8.14 Expanding the Bearing Bore

Bearing Part Numbers

Bearing Bearing

Model p/n (M) p/n (C)

300, 300S, 360 02030-06001 02030-06201

357 12900-62010 12900-62010

377 12900-60010 12900-62010

488 02030-06201 02030-06201

575, 695 02030-06202 02030-06202

577 12900-62020 12900-62020

680 02000-06202 02000-06202

757 02030-06202 02030-06203

Figure 8.15 Bearing Inspection

Missing

Components

Clogged with

Debris

New

Bearing

Driver

ENGINE CRANKCASE

Heat

Gun

Bearing Bore

Cleaning

Inspection

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