NHTSA ID Number: 10122812
Manufacturer Communication Number: Quick Ref Spec B
TSB/Document Date: 2017-11-08
Summary
This document contains the quick reference specification book.
80
M10x50
40
M12x70
80
Starter, securing. Refer to Electrical Equipment;
Rep. Gr.27; Removal and Installation
Alignment sleeves for centering
Audi
A3 Quick Reference Specification Book
•
October 2012
Item
1, 2
3 1) 2)
4 1) 2)
5
6
A
1)
2)
Engine –
2.0L CBFA, CCTA
Manual Transmission to Engine
Tightening Specifications
Bolt
Nm
M12x65
80
M12x150
80
M12x165
40
M10x50
M12x85
80
Alignment sleeves for centering
Bolt with threaded pin M8.
Also starter to transmission.
Audi A3 Quick Reference Specification Book
•
October 2012
41
Crankshaft, Cylinder Block – 2.0L CBFA,
CCTA
Cylinder Block Bearing Shell Identification
The cylinder block bearing shell identification is
located either on the oil pan sealing surface or on the
top (transmission side) of the cylinder block.
42
Audi A3 Quick Reference Specification Book
•
October 2012
Engine –
2.0L CBFA, CCTA
Bearing Cap Bearing Shell Identification
The identification on the cylinder block is for the upper bearing shell.
Note the letter and match it to the color identification in the table.
Letter on cylinder block
S
R
G
B
W
Audi A3 Quick Reference Specification Book
Color of bearing
Black
Red
Yellow
Blue
White
•
October 2012
43
The identification on the crankshaft is for the lower bearing shell.
Note the letter and match it to the color identification in the table.
Letter on crankshaft
S
R
G
B
W
44
Color of bearing
Black
Red
Yellow
Blue
White
Audi A3 Quick Reference Specification Book
•
October 2012
Nm
25
45 plus an additional
90° (¼ turn)
60 plus an additional
90° (¼ turn)
27
10 plus an additional
90° (¼ turn)
150 plus an additional
90° (¼ turn)
Dual mass flywheel 1)
Pressure relief valve
Sensor wheel 1)
Vibration damper 1)
1)
2)
Replace fastener(s).
Lubricate the threads and contact surface.
Crankshaft Dimensions
Reconditioning
dimension in mm 1)
Basic dimension
1)
Crankshaft bearing pin Connecting rod bearing
diameter
pin diameter
58.00
47.80
The preparation of worn crankshafts is not provided.
Piston Ring End Gaps
Piston ring
dimensions in mm
Compression ring
New
Wear limit
0.20 to 0.40
0.8
Oil scraping ring
0.25 to 0.50
0.8
Piston Ring Clearance
Piston ring
dimensions in mm
1st compression ring
2nd compression ring
Oil scraping rings
New
Wear limit
0.06 to 0.09
0.20
0.03 to 0.06
0.15
Cannot be measured
Piston and Cylinder Dimensions
Honing dimension
in mm
Basic dimension
1)
Piston diameter
Cylinder bore diameter
82.465 1)
82.51
Measurements without graphite coating (thickness = 0.02 mm). The graphite
coating wears off.
Audi A3 Quick Reference Specification Book
•
October 2012
45
Engine –
2.0L CBFA, CCTA
Fastener Tightening Specifications
Component
A/C compressor
Connecting rod bearing cap 1) 2)
Accessory Assembly Bracket
Tightening Specifications
Step
1
2
3
46
Component
Tighten bolts 1 through 5 in sequence
Tighten bolts 1 through 5 in sequence
Tighten bolts 1 through 5 in sequence
Audi A3 Quick Reference Specification Book
Nm
Hand-tighten
20
an additional
90° (¼ turn)
•
October 2012
Step
1
2
Component
Tighten bolts 1 through 8 in sequence
Tighten bolts 1 through 8 in sequence
Audi A3 Quick Reference Specification Book
•
Engine –
2.0L CBFA, CCTA
Sealing Flange Tightening Specifications
Nm
Hand-tighten
9
October 2012
47
Transmission Side Sealing Flange
Tightening Specifications
Step
1
2
48
Component
Tighten bolts 1 through 6 in sequence
Tighten bolts 1 through 6 in sequence
Audi A3 Quick Reference Specification Book
Nm
Hand-tighten
4 an additional
45° (⅛ turn)
•
October 2012
Step
1
2
3
4
5
Component
Tighten bolts 1 through 10 and A in sequence
Tighten bolts 1 through 10 in sequence
Tighten bolts 1 through 10 in sequence
Tighten bolts A
Tighten bolts A
Audi A3 Quick Reference Specification Book
•
Engine –
2.0L CBFA, CCTA
Crankshaft Assembly Tightening Specifications
Nm
Hand-tighten
65
an additional
90° (¼ turn)
20
an additional
90° (¼ turn)
October 2012
49
Cylinder Head, Valvetrain – 2.0L CBFA,
CCTA
Fastener Tightening Specifications
Component
Balance shaft exhaust side 1)
Balance shaft intake side 1)
Balance shaft timing chain guide rail guide
pins
Bearing bracket 1) 2)
Fastener
size
-
Nm
M6
-
9
8 plus an
additional 90°
(¼ turn)
20 plus an
additional 90°
(¼ turn)
9
9
20
85
-
35
20
-
20
-
20
9
9
5
9
-
20
-
9
20
25
9
9
20
M8
Bracket for heat shield 1)
Camshaft Position (CMP) sensor
Camshaft timing chain guide rail guide pins
Chain tensioner to tensioning rail for the
timing chain
Control valve
Guide track for the balance shaft timing
chain-to-engine guide bolts
Guide track for the timing chain-to-engine
guide bolts
Heat shield 1)
Mounting plate
Oil dipstick guide tube
Sealing plugs
Secondary air injection solenoid valve-toengine
Timing chain tensioning rail guide pins
Timing chain tensioning rail
Bolt
Guide pins
Transport bracket
1)
2)
Replace fastener(s).
For bolt tightening clarification, refer to ElsaWeb, Camshaft Timing Chain Assembly
Overview, items 5 and 7.
50
Audi A3 Quick Reference Specification Book
•
October 2012
Dimension
Diameter a
mm
Diameter b
mm
c
mm
α
∠°
Engine –
2.0L CBFA, CCTA
Valve Dimensions
Intake valve
33.85 ± 0.10
5.98 ± 0.007
103.97
45
Exhaust valve
28.0 ± 0.1
5.955 ± 0.007
101.87
45
NOTE: Intake and exhaust valves must not be
refaced by grinding. Only lapping is permitted.
Compression Pressures
New
Bar positive
pressure
11.0 to 14.0
Wear limit
Bar positive pressure
7.0
Audi A3 Quick Reference Specification Book
•
Difference between
cylinders
Bar positive pressure
Max. 3.0
October 2012
51
Cylinder Head Cover Removal Specification
Remove cylinder head cover bolts 1 through 6 in sequence.
52
Audi A3 Quick Reference Specification Book
•
October 2012
Nm
Hand-tighten
2
Tighten bolts 1 through 6 in sequence in several
stages 1)
Tighten bolts 1 through 6 in sequence
3
Tighten bolts 1 through 6 in sequence
an additional
90° (¼ turn)
1
1)
Component
Engine –
2.0L CBFA, CCTA
Cylinder Head Cover Tightening Specifications
8
Replace fastener(s).
Audi A3 Quick Reference Specification Book
•
October 2012
53
Cylinder Head Removal Specifications
Remove cylinder head bolts (Æ) and 1 through 5 in sequence.
Cylinder Head Tightening Specifications
Step
1
2
Component
Tighten bolts 1 through 5 in sequence
Tighten bolts 1 through 5 in sequence
3
Tighten bolts 1 through 5 in sequence
4
5
Tighten bolts (arrows)
Tighten bolts (arrows)
54
Audi A3 Quick Reference Specification Book
Nm
40
an additional
90° (¼ turn)
an additional
90° (¼ turn)
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TSB/Document ID: Quick Ref Spec B
Replacement Service Bulletin Number:
MFR Communication Date: 2012-11-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
MFR Component System:
MFR Component Subsystem:
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