Skoda Octavia III 2013 Workshop Manual page 87

8 - Piston pin
❑ removing and installing
9 - Piston
❑ with combustion chamber
❑ replace piston if there is any sign of crack formation on the piston crown or piston body
❑ Mark the installation position and the assignment to cylinder
❑ removing and installing
❑ Check piston and cylinder bore
❑ Measure piston projection in "TDC"
❑ Observe part number ⇒ ETKA - Electronic Catalogue of Original Parts
10 - Compression rings
❑ Measure end gap
❑ Measure vertical gap
❑ use commercially available piston ring pliers for removing and installing
❑ Fitting position: Identification "TOP" or labelled side for piston crown
❑ Offset gaps by 120°.
11 - Oil scraper ring
❑ Measure end gap
❑ Measure vertical gap
❑ use piston ring pliers for removing and installing
❑ Fitting position: Identification "TOP" or labelled side for piston crown
❑ Offset joint 120° to bottom compression ring
Checking piston ring gap
Special tools and workshop equipment required
♦ Feeler gauges
– Push the piston ring into the bottom cylinder opening at right
angles to the cylinder wall from above to about 15 mm from
the cylinder edge. To insert, use a piston without piston ring.
Piston ring
(dimensions in mm)
1. Compression ring
2. Compression ring
Oil scraper ring
1.6/66; 77; 81; 2.0/105; 110; 135 kW TDI CR engine - Edition 07.2014
⇒ "3.4 Removing and installing the piston", page 82
⇒ "3.4 Removing and installing the piston", page 82
⇒ , page 80
⇒ "3.5 Checking piston projection in TDC", page 83
⇒ page 79
⇒ page 80
⇒ page 79
⇒ page 80
New
0,30 ... 0,40
0,20 ... 0,45
0,25 ... 0,50
Octavia III 2013 ➤ , Octavia III 2014 ➤
⇒ page 81
Wear limit
0,55
0,95
0,75
3. Crankshaft, Piston and Conrod
79