Centinel System – Repair Manual – 001-028   Cylinder Liner

CAUTION  Cylinder liners of different design can not be mixed within an engine. All six cylinder liners must be of the same design.

There are two different designs of cylinder liners used. The design used in a particular engine is dependent on the engine’s production vintage.

Engines assembled prior to engine serial number 14022615 have groove-top cylinder liners. They are characterized by a groove machined into the top surface of the cylinder liner flange.

Engines with serial number 14022615, and after, are assembled with flat-top cylinder liners. They are characterized by a cylinder liner flange that is flat, except for the fire dam.

Make sure the cylinder block and all parts are clean before assembly.

Lubricate the two cylinder liner o-ring seals with vegetable oil prior to assembly.

Install the two o-ring seals onto the cylinder liner.

CAUTION  Cylinder liners of different design can not be mixed within an engine. All six cylinder liners must be of the same design.

Install the cylinder liner into the cylinder block.

When acceptable and used cylinder liners are installed, rotate the cylinder liner 90 degrees from its original position in the engine. The thrust and anti-thrust surfaces must face the front and back of the cylinder block.

Use cylinder liner installation kit, Part Number 3162461, to seat the liner.

If the cylinder liner does not seat properly, remove it and inspect the cylinder liner bore seat and cylinder liner for nicks, burrs, or dirt.

Install the cylinder liner again.

Because of design differences, the cylinder liner’s position (relative to the cylinder top deck) will be different.

For groove-top cylinder liners, a recession measurement is taken. This measures the depth of the groove relative to the cylinder block deck regardless of the flange or fire dam height.

For flat-top cylinder liners, a cylinder liner protrusion measurement is taken which is the height of the cylinder liner flange above the cylinder block surface regardless of the flange or fire dam height.

Regardless of the cylinder liner design, the measurement technique will be the same.

The cylinder liner measurement must be checked before installing the pistons and connecting rods.

The cylinder liner measurement must be made with the cylinder liners in the clamped state.

Install and tighten the cylinder liner installation tool.

Use depth gauge, Part Number 3823495, to measure the clamped state at the intake side three times and average the readings.

Measure the clamped state of the exhaust side three times and average the readings.

Cylinder Liner Recession (Groove-Top Cylinder Liners)

Cylinder Liner Protrusion (Flat-Top Cylinder Liners)

If the cylinder liner measurement on either the intake or exhaust side is not within specifications, the cylinder liner must be replaced.

For flat-top cylinder liners only:

• The difference between the lowest cylinder liner and the highest cylinder liner can not be greater than 0.102 mm [0.004 in].
• The maximum allowable difference between adjacent cylinders is 0.051 mm [0.002 in].
• The protrusion must be within 0.0381 mm [0.0015 in] around any cylinder.

Before installing the piston and connecting rod assemblies, wipe the inside of the cylinder liners.Use a clean cloth with 15W-40 oil.