Audi TT 2007 Repair Manual page 10

Audi TT 2007 ➤
Manual Transmission - Edition 10.2009
♦ Loosen bolts and nuts in reverse of tightening sequence.
♦ Tighten and loosen bolts or nuts for securing covers and hous‐
ings without tightening sequence in diagonal sequence in
stages.
♦ Replace self-locking bolts and nuts.
♦ The tightening specifications stated apply to non-oiled nuts
and bolts.
♦ Threaded holes into which self-locking bolts or bolts coated
with locking fluid are screwed, must be cleaned (for example
tap). Otherwise there is a risk that the bolts will shear the next
time they are removed.
♦ Ensure with screwed connections that the contact surfaces as
well as the visible surfaces of nuts and bolts are waxed after
assembly, if necessary.
Mount
♦ Install new tapered roller bearing as supplied and do not use
additional oil.
♦ Install various bearings (removed tapered roller bearings) into
transmission, lubricated with gear oil.
♦ Heat the inner rings of the tapered roller bearings to approxi‐
mately 100 °C (212 °F) with the inductive heat unit -VAS 6414-
before installing. Press on to the stop when installing so that
there is no axial clearance.
♦ Do not interchange the outer or inner races of bearings of the
same size.
♦ Tapered roller bearings installed on a shaft must be replaced
as a set and use same make of bearings.
♦ Install needle bearings with lettered side (thicker metal) to‐
wards fitting tool.
Adjusting Shims
♦ Use a micrometer to measure the shims at several points.
Tolerance variations make it possible to find the exact shim
thickness required.
♦ Check for burrs and damage.
♦ Only install perfect shims.
Synchronizer Rings
4
Rep. Gr.00 - General, Technical Data
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with respect to the correctness of information in this document. Copyright by AUDI AG.