11B.2
Pistons
The piston assembly must be dismantled for inspection of mating
surfaces between piston skirt and piston crown and for inspection and
cleaning of cooling oil spaces.
11B.3
Piston crown
11B.3.1 Visual inspection
The combustion space must be checked for corrosion and/or burning
marks.
••••
If marks deeper than 2 mm are found the piston crown should be
replaced.
Deposits in the cooling oil space thicker than 0.5 mm is an indication
of contaminated lubricating oil. Such extensive deposit layers can cause
overheating of the piston crown.
11B.3.2 Crack detection test
A crack detection test by use of liquid penetrant or, preferably, mag-
netic particle detection method should be performed, comprising all
surfaces.
••••
No cracks are allowed.
11B.3.3 Measurements
Piston ring grooves to be measured regarding wear in accordance with
normal practice.
Measurements of the distance between the inner and outer support
surfaces must be made, see piston type specific instructions below.
Please note that a special measuring tool has been designed for this
measurement.
11B.3.4 Reconditioning
Please contact Wärtsilä for reconditioning of piston crowns.
No repair welding is allowed.
Appendix B
Piston Overhaul
32-200138
11B - 2
Содержание PAAE051728
Страница 4: ......
Страница 18: ...Appendix B Welding Precautions 200640 00 6...
Страница 26: ...01 Main Data Operating Data and General Design 32 200634 01 01 8 W RTSIL 32...
Страница 60: ...Appendix A Environmental Hazards 200507 02A 10...
Страница 68: ...Page 7 7 Document No 4V92A0645 Rev j...
Страница 84: ...03 Start Stop and Operation 32 200402 04 03 12 W RTSIL 32...
Страница 98: ...04 Maintenance Schedule 32 200623 01 04 14 W RTSIL 32...
Страница 154: ...07 Tightening Torques and Use of Hydraulic Tools 32 200643 01 07 30 W RTSIL 32...
Страница 162: ...08 Operating Troubles Emergency Operation 32 200402 01 08 8 W RTSIL 32...
Страница 164: ...Specific Installation Data 2005 01 09 2...
Страница 178: ...10 Engine Block with Bearings Oil Sump and Cylinder Liner 32 200150 10 14 W RTSIL 32 34SG...
Страница 216: ...Appendix A Testing of cylinder tightness 32 200142 A 4 W rtsil 20 32 34...
Страница 226: ...13 Camshaft Driving Gear 32 200546 02 13 10 W RTSIL 32...
Страница 253: ...U tube manometer Fig 15 12 401508200050 32 200549 10 Turbocharging and Air Cooling 15 W RTSIL 32 15 19...
Страница 254: ...15 Turbocharging and Air Cooling 32 200549 10 15 20 W RTSIL 32...
Страница 274: ...16 Injection System 32 200627 01 16 20 W RTSIL 32...
Страница 280: ...Fuel System 32 200508 07 17 6 W RTSIL 32...
Страница 314: ...19 Cooling Water System 32 200050 19 14 W RTSIL 32...
Страница 394: ...23 Instrumentation and Automation 32 200115 II 23 60 W RTSIL 32...