Technical data

Repair instructions

Measure the upper and lower turning points in the cyl-

inder liner, and at several points along the height of

the liner. At each measurement point, the measure-

ment must be done in the transverse and lengthwise

directions of the engine.

Cylinder liner, inspection and

measurement

Inspection

The cylinder liner should be carefully cleaned before

inspection and measurement. The cylinder liner must

be removed from the cylinder block to permit accurate

crack checking.

IMPORTANT! The position and number of the

cylinder liner must be marked with a felt tip pen

before the liner is removed.

NOTE! Routine removal of the cylinder liner should

not be done unless measurement or other checks indi-

cate that replacement, honing or careful crack check-

ing is necessary.

The Magnaflux method can be used for crack check-

ing.

Measurement

Measure the wear on the cylinder liner with a cylinder

indicator. To get the most accurate wear measure-

ment possible, the cylinder indicator should first be

set with a gauge ring or micrometer.

Use the original diameter of the cylinder liner as the

starting value.

If the wear is greater than 0.35–0.40 mm, the cylinder

liner with pistons and piston rings should be replaced.

NOTE! The piston and cylinder

liner are only supplied

as a complete set as spare parts. The pistons and

cylinder liners are classified and marked with a letter,

C, D or E. This means that a piston marked E must

only be installed with a liner marked E.

Cylinder liner, removal

Special tools, 6(x) series: 9996087, 9996394 (2 no.),

9996395 (2 no.), 9996645

7(x) series: 9992178, 9996394 (2 no.), 9996395

(2 no.), 9996645

Mark up the cylinder liner (cylinder and installation lo-

cation) if it is to be re-used.

Assemble the extractor with extractor plate 9996087

(6x series) or 9992178 (7x series). Pull out the cylin-

der liner. Remove the seal rings.