Dismantling and assembling pistons and cylinders

7 8 9 10

No.

Designation

Removal

Installation

1

Cylinder

6

Mark installation position

Check, oil bore

1a

Cylinder head gasket

6

Always replace with new parts, fit dry

2

O-ring 102 x 2

6

Always replace with new parts

3

Snap ring

6

Lever out

Always replace with new parts, check for correct seating, use Special Tool 9500

4

Wrist pin

6

Must remain allocated to the corresponding piston. Do not mix with parts from another cylinder, even within the same engine. When dismantling and assembling the engine, observe this procedure and mark parts accordingly.

Observe inside dia., use suitable thrust pin

5

Piston

6

Mark installation position

6

Snap ring

6

Lever out

Always replace with new parts, check for corr. seating, use Sp. Tool 9500

7

Taper faced ring, groove 1

6

8

Stepped taper faced ring, groove 2

6

9

Double-bevelled oil control ring, groove 3

6

10

Tubular spring, groove 3

6

Lift off cylinder head only in this reinforced area (arrows) using a suitable tool. If required, soak sealant residues with adhesive remover, e.g. by Loctite, and remove carefully.

1011-13

Stepped Taper Faced Ring

Dismantling and assembling pistons, cylinders

Printed in Germany - XVI, 1992

Piston

1 - Groove 1 - Taper face ring

2 - Groove 2 - Stepped taper face ring

3 - Groove 3 - Double-bevelled ring with rubber-hose lined spring

Disassembling and Assembling Pistons / Cylinders

Printed in Germany - XIV, 1991

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