4, 19 and 18 seconds.
This shows that cyl.no.4 is the one to be suspected for a blow-by.
The test can be verified by listening for leaking sounds inside
crankcase during testing.
••••
If the time is limited to overhaul only one piston, it is recom-
mended to dismantle the worst measured blow-by piston for
inspection. The result of inspection gives a hint of general engine
condition.
••••
When re-testing the cylinder after an overhaul a rapid pressure
drop can be observed. The reason for this is because the running
in of piston rings is not yet performed.
Note! Keep pre-lubricating pump running during test.
Note! The turning gear should be engaged during test.
••••
In general, the location of leakage can be found by listening when
the air valve is open.
Attention! A general condition of engine is indicated with the test device, but
more important is the operation data records.
The overhauls must be made according to recommended over-
haul intervals and not only when the pressure test shows a big
blow-by.
32-200142
Testing of cylinder tightness
Appendix A
Wärtsilä 20/32/34
A - 3
Summary of Contents for PAAE051728
Page 4: ......
Page 18: ...Appendix B Welding Precautions 200640 00 6...
Page 26: ...01 Main Data Operating Data and General Design 32 200634 01 01 8 W RTSIL 32...
Page 60: ...Appendix A Environmental Hazards 200507 02A 10...
Page 68: ...Page 7 7 Document No 4V92A0645 Rev j...
Page 84: ...03 Start Stop and Operation 32 200402 04 03 12 W RTSIL 32...
Page 98: ...04 Maintenance Schedule 32 200623 01 04 14 W RTSIL 32...
Page 154: ...07 Tightening Torques and Use of Hydraulic Tools 32 200643 01 07 30 W RTSIL 32...
Page 162: ...08 Operating Troubles Emergency Operation 32 200402 01 08 8 W RTSIL 32...
Page 164: ...Specific Installation Data 2005 01 09 2...
Page 178: ...10 Engine Block with Bearings Oil Sump and Cylinder Liner 32 200150 10 14 W RTSIL 32 34SG...
Page 216: ...Appendix A Testing of cylinder tightness 32 200142 A 4 W rtsil 20 32 34...
Page 226: ...13 Camshaft Driving Gear 32 200546 02 13 10 W RTSIL 32...
Page 254: ...15 Turbocharging and Air Cooling 32 200549 10 15 20 W RTSIL 32...
Page 274: ...16 Injection System 32 200627 01 16 20 W RTSIL 32...
Page 280: ...Fuel System 32 200508 07 17 6 W RTSIL 32...
Page 314: ...19 Cooling Water System 32 200050 19 14 W RTSIL 32...
Page 394: ...23 Instrumentation and Automation 32 200115 II 23 60 W RTSIL 32...