Audi Q7 2007 Repair Manual page 15

Shaft Seals, Sealing Rings, O-Rings, Seals
♦ O-rings, shaft seals and seals must be replaced.
♦ After removing gaskets, examine contact surface on housing/
shaft for burr resulting from removal or for other signs of dam‐
age.
♦ Before installing radial shaft seal, fill space between sealing
lips -arrow- halfway with Grease - G 052 128 A1- .
♦ The open side of the seals point toward the fluid to be sealed
in.
♦ Before installing, lightly lubricate shaft seal outer circumfer‐
ence and sealing lips with ATF or gear oil, depending on
installation location.
♦ Coat O-rings with ATF before inserting to prevent crushing
rings during installation.
♦ Always only use approved ATF. Other types of lubrication
cause faults to occur in the transmission hydraulics.
♦ Press in new shaft seal, so that the sealing lip does not run on
the same point as the sealing lip of the old shaft seal (use
insertion depth tolerances).
♦ Replace paper gaskets, thoroughly clean sealing surfaces and
completely remove old seals.
♦ After installing, check the relevant fluid levels and fill if neces‐
sary. Capacities. Refer to
cations. Refer to the Parts Catalog.
Bolts and Nuts
♦ Loosen bolts in opposite of tightening sequence if another se‐
quence is not specified.
♦ Nuts and bolts which secure covers and housings should be
loosened and tightened crosswise in stages if no tightening
sequence is specified.
♦ The tightening specifications stated apply to non-oiled nuts
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
and bolts.
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.
♦ Always replace self-locking nuts and bolts.
♦ Use a wire brush to clean the threads of bolts that were
screwed in with locking compound. Install the bolts with Lock‐
ing Fluid - AMV 185 101 A1- .
♦ Threaded holes with self-locking bolts or bolts coated with
locking fluid must be cleaned, for example using a thread tap.
Otherwise there is a risk that the bolts will shear the next time
they are removed.
Circlips
♦ Do not overstretch the circlips.
♦ Always replace damaged or stretched circlips.
♦ The circlips must fit completely inside the groove.
Bearings
♦ Insert bearing with axle oil or ATF, depending on installation
location.
♦ Replace the transmission if any of the shift elements are
scorched.
8-Speed Automatic Transmission 0C8 - Edition 08.2017
⇒ "5 Capacities", page 5 . Specifi‐
Audi Q7 2007 ➤
11
8. Repair Information