Seat Ateca 2017 Workshop Manual page 109

4 cyl. petrol engine (1.8 l and 2.0 l with direct injection, 4 V, exhaust gas turbocharger, timing chain,
Checking ring-to-groove clearance
– Clean groove in piston before checking clearance.
Ring-to-groove clearance
in connection with two-
part oil scraper ring
1st compression ring
2nd compression ring
Oil scraper rings
Ring-to-groove clearance
in connection with three-
part oil scraper ring
1st compression ring
2nd compression ring
Oil scraper rings
Checking cylinder bores
Note
Measuring the cylinder bores must not be done when the cylinder
block is mounted to the engine and gearbox stand - VAS 6095- ,
as incorrect measurements may result.
Special tools and workshop equipment required
♦ Cylinder gauge - VAS 6078-
CAUTION
Risk of damage to the surface of the cylinder bore caused by
incorrect machining.
– Do not machine cylinder bore (reboring, honing, grinding)
with workshop equipment.
– Take measurements at 3 positions in both lateral direction
-A- and longitudinal direction -B-.
♦ Deviation from nominal dimension: max. 0.08 mm
Basic dimension
•
1)
Dimensions without graphite coating (thickness
0.02 mm). The graphite coating wears away.
New
0.06 to 0.09 mm
0.03 to 0.06 mm
Cannot be measured
New
Cannot be measured
Cannot be measured
Cannot be measured
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
Piston ∅ respect to the correctness of information in this document. Copyright by SEAT S.A. Cylinder bore ∅
mm
1)
82.42
Ateca 2017 ➤ , León 2013 ➤ , León ST 2013 ➤
EA 888 III. Gen) - Edition 10.2018
Wear limit
0.20 mm
0.15 mm
Wear limit
82.51
101
5. Pistons and conrods