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Replace piston rings
| 1. |
Remove all pistons with con-rods
Note: Remove all
pistons with con-rods - see operation "Remove and install all
pistons with con-rods".
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| 2. |
Removing piston rings
| • |
Remove piston rings using piston ring pliers (1)
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| 3. |
Clean ring grooves
Note: Clean piston ring
groove for rectangular compression ring (2), tapered compression
ring (3) and oil scraper ring (4) using ground side of an old
piston ring.
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| 4. |
Checking gap
Note: Permitted piston
ring gap - see "Technical Data"
| • |
Insert piston rings in cylinder
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| • |
Check gap using feeler gauge
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| 5. |
Attach piston rings
Note: Use piston ring
pliers to insert piston rings into ring groove with "TOP" marking
facing up
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| 6. |
Adjust piston rings
| • |
Piston rings (I), rectangular compression ring (1) and tapered
compression ring (2) offset by 180°
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| • |
Offset oil scraper rings (3) (II) 25 - 50 mm to right and left
of intermediate ring gap
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| 7. |
Check piston ring vertical play
| • |
Check using feeler gauge in ring groove
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| 9. |
Install all pistons with con-rods
Note: Install all
pistons with con-rods - see operation "Remove and install all
pistons with con-rods".
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