IHI NIIGATA MG(L)26HLX, Instruction Manual

Page: 147 / 204

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
SECTION
４
- DISASSEMBLY AND REASSEMBLY
4.3 CYLINDER LINER
４－３－０１
4.3 CYLINDER LINERS
4.3.1 Description
The cylinder liners are cast iron, replaceable, wet (water-cooled) liners. As
shown below, a flange at the top of each liner rests on top of the engine
block. The liners are clamped in place when the cylinder heads are bolted to
the block.
A sealing compound is used between the liner flange and the top surface of the
block. O-ring seals
③
are used on the OD of the liner to seal the water
passages in the block.
4.3.2 Visual Inspection
- After removing the cylinder head and the piston, visually inspect the
cylinder liner bore.
- If deep scratches or surface galling is apparent on the surface of the bore,
a new liner should be installed.
- Deglazing the Liner
- If the liner is to be reused, carefully check the surface of the bore in the
ring travel area. If the surface is very highly polished and no
circumferential "tool marks" are visible under a strong light, deglazing may
be required. Deglazing forms microscopic oil grooves in the liner surface
to retain an oil film and improve lubrication.