Audi TT (2007 year). Manual — part 36
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Procedure
Note
♦
If the valve has to be renewed as part of a repair, use a new
valve for the measurement.
♦
Only insert inlet valve into inlet guide and exhaust valve into
exhaust guide, as the stem diameters are different.
– Attach dial gauge -VAS 6079- with dial gauge bracket -
VW 387- to cylinder head.
– Insert valve into guide.
• End of valve stem must be flush with guide.
– Measure the amount of sideways play.
• Wear limit: 1.0 mm.
– If the wear limit is exceeded, repeat the measurement with
new valves.
– Renew cylinder head if wear limit is still exceeded.
Note
Valve guides cannot be renewed.
3.12
Checking valves
– Visually inspect for scoring on valve stems and valve seat sur‐
faces.
– Renew valve if scoring is clearly visible.
3. Valve gear
135
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
17 – Lubrication
1
Oil pump, sump, balance shaft as‐
sembly
Note
♦
If large quantities of metal shavings or abrasion are found
when performing engine repairs, this may be an indication of
damage to the crankshaft or conrod bearings. To prevent fur‐
ther damage, the following steps are required after completion
of repair work: clean the oil galleries carefully and renew the
oil spray jets, engine oil cooler and oil filter.
♦
Refer to ⇒ Maintenance tables for engine oil capacity, oil
specifications and viscosity grades.
♦
Oil spray jet and pressure relief valve
1.1
Oil pump, sump, balance shaft assembly - exploded view
1 - Sump
❑ Removing and installing
2 - Bolt
❑ 20 Nm
3 - Suction pipe
❑ Clean strainer if dirty
4 - Bolt
❑ 9 Nm
5 - O-ring
❑ Renew
6 - Oil pump
❑ Removing and installing
❑ Before installing, check
that the two dowel
sleeves for centring oil
pump are fitted onto bal‐
ance shaft assembly
7 - Oil pump drive shaft
8 - Circlip
❑ Must fit securely in
groove
❑ Renew circlip if dam‐
aged or stretched
9 - Spur gear for balance shaft
10 - Bolt
❑ Renew
❑ 20 Nm + 90°
11 - Hub
❑ For idler gear
136
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
❑ Renew
12 - Bolt
❑ Renew
❑ 90 Nm + 90°
13 - Thrust washer
❑ For idler gear
❑ Renew
14 - Idler gear
❑ Renew
❑ To achieve the correct backlash a coating is already applied to the new idler gear. The coating is worn
down rapidly and the backlash is then correct
❑ On idler gears with coating applied to teeth on parts of circumference only, a white dot indicates correct
installation position
❑ If there is no white dot, the complete circumference of the idler gear is coated
❑ Installation position: Part No. must be visible.
❑ Make sure thrust washer is properly seated
15 - Thrust washer
❑ For idler gear
❑ Renew
❑ Installation position
❑ When installing idler gear, apply grease to hold washer on balance shaft assembly
16 - Crankshaft gear
17 - Balance shaft assembly
❑ Removing
❑ Re-installing "old" balance shaft assembly
❑ Installing new balance shaft assembly
❑ Before installing, check that the two dowel sleeves for centring balance shaft assembly are fitted on
cylinder block
18 - Bolt
❑ Renew
❑ Tightening torque and sequence
19 - Bolt
❑ 9 Nm
20 - Oil intake pipe
21 - Bolt
❑ 9 Nm
22 - Seal
❑ Renew
23 - Oil level and oil temperature sender -G266-
24 - Bolt
❑ Self-locking
❑ Renew
❑ 9 Nm
25 - Bolt
❑ Tightening torque and sequence
26 - Seal
❑ Renew
1. Oil pump, sump, balance shaft assembly
137
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
27 - Oil drain plug
❑ 30 Nm
Guide tube for oil dipstick - tightening torque
– Tighten bolts -arrows- to 9 Nm.
Sump - tightening torque and sequence
– Renew bolts for sump.
– Tighten bolts in 3 stages and in diagonal sequence as follows:
1.
Pre-tighten bolts -1 ... 20- in diagonal sequence to 5 Nm.
2.
Tighten bolts -arrows- securing sump to gearbox to 40 Nm.
3.
Tighten bolts -1 ... 20- in diagonal sequence and in stages
to 15 Nm.
Installation position of thrust washer
Caution
Thrust washer can slip out of position behind idler gear.
♦ Make sure that thrust washer -A- does not slip out of the
recesses in the balance shaft assembly -arrows- when fit‐
ting the idler gear. If this is neglected, the thrust washer
can become trapped. If necessary, apply grease to hold
washer on balance shaft assembly.
138
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