Signs Of Damage To Cylinder Liners In The Endoscope

Ideal condition of used cylinder!=> Continued use acceptable!  The typical fine-marking that develops at a very early stage is apparent. The liners are a yellow-brown color with a slight speckled effect in places. The liner keeps its silver color in places with more intense lateral force transmission. → Perfect cylinder liner 

Fig 1: Identifying Cylinder Liner

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Ideal condition of used cylinder!=> Continued use acceptable!  The typical fine-scoring that develops at a very early stage is apparent. The liners are a yellow-brown color with a slight speckled effect in places. The liner keeps its silver color in places with more intense lateral force transmission. Minor visible marks can be ignored. -arrow- 

Fig 2: Locating Engine Ideal Condition

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Ideal condition of used cylinder! = > Continued use acceptable! (4 illustrations)  A typical polished cylinder liner, which develops at an early stage, is evident. The liners have several polished, shiny silver areas. The liner retains its silver color in areas subject to higher lateral force transmission. Minor visible marks can be ignored. → Ideal condition of used engine with polished running tracks 1 → Ideal condition of used engine with polished running tracks 2 → Ideal condition of used engine with polished running tracks 3 → Ideal condition of used engine with polished running tracks 4 

Fig 3: Identifying Engine Ideal Condition With Polished Running Tracks 1

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Fig 4: Identifying Engine Ideal Condition With Polished Running Tracks 2

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Fig 5: Identifying Engine Ideal Condition With Polished Running Tracks 3

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Fig 6: Identifying Engine Ideal Condition With Polished Running Tracks 4

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Damaged cylinder liner!=> Engine damage!  Extensive areas of deeper scoring are apparent in this state -arrows-  .

Fig 7: Locating Damaged Cylinder Liner With Deep Scoring

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Damaged cylinder liner! => Engine damage!  Liner damage, piston seizure → Piston seizure  . Signs of this type of damage include knocking noises due to inadequate piston guidance in the cylinder, rough idling, blue smoke, the Check Engine light may come on. Negative pressure loss test.

Fig 8: Identifying Piston Seizure

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