ar0140b9202d

Measure cylinder bores

Type ar · topic 01.40 · version 0101 · 2016-02-12

Applies to: Cumbustion engine 476.93

Where it sits

Function group 1 Engine › 01 Complete engine, crankcase ventilation, cylinder head, crankcase › 01.40 Crankcase, timing case cover, end cover

EinPAS 15 Engine › 15.15 Combustion engine, complete/engine housing/crank assembly › 15.15.31 Crankcase/oil separator/ventilation

Also applies to engines/gearboxes: 476 93*

AR01.40-B-9202D

Measure cylinder bores

12.02.16

Cumbustion engine 476.93

Measure cylinder bores

B01.40-0006-06

1 Cylinder liner

2 Dial indicator

3 Bore meter

4 External micrometer

A,B Measuring direction on the cylinder liner

I Measuring point above the inversion zone of the first piston ring (no-wear zone)

II Measuring point at the inversion zone of the first piston ring (highest wear zone)

Check

1

Clean the inside of the cylinder liner (1).

2

Check the sliding surface of the cylinder liner (1).

Sliding surfaces should not show signs of excessive wear and/or deformation.

Directions to check damage to the cylinder liner caused by the penetration of impurities.

AH01.40-B-0001-01A

Measure

3

Using the micrometer (4), adjust the dial indicator (2) and bore meter (3) to the diameter of the cylinder liner (1).

Installing the dial indicator with 5 mm preload.

*BE01.40-B-1001-03F

*001589532100

4

Measure the bore of the liner (1) at the no-wear zone (I) and adjust the dial indicator scale (2) to "0".

Measure at the measurement point (I), above the inversion zone of the first piston ring, in the (A) and (B) directions.

*BE01.40-B-1001-03F

5

Measure the wear on the sliding surface of the liner (1) at the inversion zone (II) of the first piston ring.

Measure at the measuring point (II), the highest wear zone, in the longitudinal (A) and transversal (B) directions.

*BE01.40-B-1002-03F

Max roundness and taper.

*BE01.40-B-1003-03F

In cases of inconsistency

Replace the cylinder liner.

AR01.40-B-9324C

Inspection data of cylinder liner

Número

Denominação

Engine 476.93

BE01.40-B-1001-03F

Cylinder linear inside diameter

Letter B

mm

127,990...127,995

Letter C

mm

127,995...128,000

Letter D

mm

128,000...128,005

Letter E

mm

128,005...128,010

BE01.40-B-1002-03F

Maximum permissible wear on cylinder linear sliding surface

At the first piston ring upper reversing point

mm

0,08

BE01.40-B-1003-03F

Out-of-round and taper on cylinder liner sliding surface

mm

0,015

Measure cylinder bores

001 589 53 21 00

Dial indicator

Referenced documents