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Liners Inspection

The document discusses cylinder liners used in L23/30H engines. It notes that the cylinder liner is made of fine-grained cast iron and fitted into a bore in the engine frame. It describes markings used on liners, including arrows indicating front. It also discusses measuring reports, canyons that can form in liner surfaces, honing brushes used for cleaning liners, liner geometry, the effects of correct versus incorrect honing, removing flame rings during disassembly, and cavitations that can occur in cylinder liners.

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679 views9 pages

Liners Inspection

The document discusses cylinder liners used in L23/30H engines. It notes that the cylinder liner is made of fine-grained cast iron and fitted into a bore in the engine frame. It describes markings used on liners, including arrows indicating front. It also discusses measuring reports, canyons that can form in liner surfaces, honing brushes used for cleaning liners, liner geometry, the effects of correct versus incorrect honing, removing flame rings during disassembly, and cavitations that can occur in cylinder liners.

Uploaded by

g arv
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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L23/30H Piston, Con. Rod and Cyl.

Liner
- Cylinder liner

The cylinder liner is made of fine grained cast iron and is fitted in a bore in the engine frame.

MAN Diesel & Turbo Academy Holeby L23/30H Piston, Con rod & Liner 2015 < 1 >
L23/30H Piston, Con. Rod and Cyl. Liner
–Liner markings

Grove at the collar V-engine only

ST: Steuer Seite/


Maneuvering side

Marking for front: Arrow


ore “Fore”
MAN Diesel & Turbo Academy Holeby L23/30H Piston, Con rod & Liner 2015 < 1 >
L23/30H, Piston, Con. Rod and Cyl. Liner
–Measuring report

Uppermost dead point,


compression ring no.: 1

Highest piston speed,


compression ring no.: 1

Lowest dead point,


compression ring no.: 1

MAN Diesel & Turbo Academy Holeby L23/30H Piston, Con rod & Liner 2015 < 1 >
L23/30H, Piston, Con. Rod and Cyl. Liner -Canyons
in liner surface

MAN Diesel & Turbo Academy Holeby L23/30H Piston, Con rod & Liner 2015 < 1 >
L23/30H, Piston, Con. Rod and Cyl. Liner
- Honing brush = Cleaning

Honing brush for cleaning & rough up only


Pockets as in previous slide can not be restored by brush!

MAN Diesel & Turbo 606 Cylinder Liner.2006.05.02 (Dept/ini)


Academy Holeby L23/30H Piston, Con rod & Liner 2015 < 1 >
-L23/30H, Piston, Con. Rod and Cyl. Liner
-Liner Geometry

MAN Diesel & Turbo Academy Holeby L23/30H Piston, Con rod & Liner 2015 < 1 >
L23/30H, Piston, Con. Rod and Cyl. Liner
- Before and after correct honing

MAN Diesel & Turbo Academy Holeby L23/30H Piston, Con rod & Liner 2015 < 1 >
L23/30, Piston, Con. Rod and Cyl. Liner
- Removal of flame ring

In order to lift
flame ring –
use old piston
ring on top of
piston

MAN Diesel & Turbo Academy Holeby L23/30H Piston, Con rod & Liner 2015 < 1 >
L23/30H, Piston, Con. Rod and Cyl. Liner
- Cylinder Liner cavitations

Example of cavitation…..

Go to: Media spec. section 504

MAN Diesel & Turbo Academy Holeby L23/30H Piston, Con rod & Liner 2015 < 1 >

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