ar0100b0001b

Inspect engine for dust damage

Type ar · topic 01.00 · version 0100 · 2016-02-12

Applies to: Cumbustion engine 476.93

Where it sits

Function group 1 Engine › 01 Complete engine, crankcase ventilation, cylinder head, crankcase › 01.00 General

EinPAS 15 Engine › 15.15 Combustion engine, complete/engine housing/crank assembly › 15.15.15 internal combustion engine, complete

Also applies to engines/gearboxes: 476 93*

AR01.00-B-0001B

Inspect engine for dust damage

12.02.16

Cumbustion engine 476.93

Remove

In the case of excessive engine oil consumption or lack of engine power, generally this can be caused by damages due to the penetration of dust, or from normal wear.

1

Removing pistons

AR03.10-B-7021F

Check

2

Check the intake manifold and the ducts between the air filter and the engine, for penetration of dust.

A heavy dust contamination in the duct elbows indicates air intake without passing through the air filter. In engines with oil bath air filter, a fine layer of dust is permitted.

3

Check the pistons and cylinder running surfaces for wear (damages caused by dust).

Check the contact surfaces of the piston skirts and the honing of the cylinders, to identify if the damages were caused by dust.

Indications for the checking of damages in the cylinder caused by penetration of impurities.

In case of damages

AH01.40-B-0001-01A

Install new cylinder liner.

AR01.40-B-9324C

Indications for the checking of damages on the pistons caused by penetration of impurities.

In case of damages

AH03.10-B-0001-01A

install new piston.

AR03.10-B-7021F

Referenced documents