Remove cylinder liner

AR01.40-B-9272B

Remove cylinder liner

18.02.2020

Engine

904.9, 906.9 in model 368, 382, 685

Engine

904.9, 906.9 in model 685, 958

Engine

904.9, 906.9 in model 693, 695

Engine

904.9, 906.9 in model 958

1

Engine block

2

Cylinder liner

3

Milling machine



Remove

1

Fasten the engine block (1) on the milling machine (3)

2

Center the cylinder liner (2) to be removed on the milling machine (3)

 Have as reference for centralization, the cylinder diameter in the area above the top reversion point of the 1st piston ring.

3

Adjust the tool and machine the cylinder liner (2) in several passes, until removing about the half of the cylinder liner thickness

 In the case of removing one or more cylinder liners, observe the work sequence to avoid damages due to excessive heating: 4-cylinders engines; 2-4-1-3, and 6-cylinders engines; 1-3-5-2-4-6.

Inside diameter of the installed cylinder liner (final finish)

*BE01.40-B-1003-03C

Liner external diameter

*BE01.40-B-1001-03C

4

Carry out some more passes, so that after the last pass, the cylinder liner (2) is with approximately 0.2 mm-thickness

 In general, with this procedure, the cylinder liner collar detaches from the cylinder liner.

Liner external diameter

*BE01.40-B-1001-03C

5

Using a three-square file, make a longitudinal groove in all cylinder liner extension (2) and remove it from crankcase (1)

 Be careful not to damage the seat-bore of the cylinder liner on the crankcase.

Test values for the cylinder liner

Number

Designation

Engine 902.9; 904.9, 906.9

BE01.40-B-1001-03C

Liner external diameter

mm

106,075...106,095

Test values for the cylinder liner

Number

Designation

Engine 902.9; 904.9, 906.9

BE01.40-B-1003-03C

Inside diameter of the installed cylinder liner (final finish)

mm

101,985...102,015