Clean bores in crankcase and separating point

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Plug bores on crankcase (2)

1 Insert shop-made cap (1) into the upper groove on the O-ring in the cylinder crankcase (2).

2 Cut insulation (3) (part number A 000 682 09 09) to size with an appropriate oversize to fit the coolant openings.

3 Close off all side coolant openings in the cylinder crankcase (2) with the cut-to-size insulation (3).

4 Close off both engine oil bores on the upper contact surface of the cylinder crankcase (2) with the insulation (3).

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5 Close off all coolant and tappet rod bores on the upper contact surface of the cylinder crankcase (2) using the shop-made stop plugs (4).

Clean collar seat and separating point on crankcase (2)

6 Clean upper contact surface and collar seat on crankcase (2) and remove corrosion points.

 Only scrape off corrosion points to clean.

7 Blow off upper contact surface and collar seat on crankcase (2) with compressed air.

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8 Suction out bores for the cylinder head bolts in the cylinder crankcase (2).

9 Remove deposits scraped out of holes in crankcase (2) and on cap (1) by evacuating or blowing out.

10 Remove stop plugs (4), insulation (3) and caps (1).