AUDI A8 2001 D2 / 1.G 01V Transmission Service Notes Workshop Manual

00-27


Servicing, notes
The maximum possible care, cleanliness and
proper tools are essential to ensure satisfactory
and successful transmission repairs. The usual
basic safety precautions also apply when
carrying out vehicle repairs.
A number of generally applicable instructions for
individual repair procedures, which are otherwise
mentioned at various points in the Repair
Manual, are summarized here. They apply to this
Repair Manual. They apply to this Repair
Manual.

Special tools and equipment
For a complete list of special tools used in this
repair manual: see "Special tools and equipment"
or "Special tools".

Transmission

Rules of cleanliness for working on automatic
transmissions page 37
-148
.

Do not run engine with the oil pan removed or
without ATF filling and do not tow vehicle.
Secure torque converter on removed
transmission to keep it from falling out.
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Thoroughly clean all connections and the
surrounding area before disconnecting.
Check installation dimension of torque
converter before installing transmission page 32
-8
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When installing transmission, make sure
centering sleeves are correctly seated.
Place parts that have been removed on a clean
surface and cover. Use foils and paper. Use
lint-free cloths only!
Carefully cover over opened components or
seal, if repairs are not carried out immediately.
Only install clean components: Only unpack
replacement parts immediately prior to
installation.
Check, and if necessary correct amount of the
following fluids when replacing the automatic
transmission. ATF in planetary gear page 37
-
133
, Gear oil in front final drive page 39
-1 ,
Transmission oil in center differential page
39
-40
. Capacities and specifications page
00
-22
onward.

When replacing the rear final drive, check and if
necessary, correct oil level in rear final drive
page 39
-94
Capacities and specifications
page 00
-23
.

O-rings, gaskets, seals

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Always replace O-rings, gaskets and sealing
rings.
After removing gaskets and seals, always
inspect the contact surfaces at housing or shaft
for burrs resulting from removal or for other
signs of damage.
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Thoroughly clean housing joint surfaces before
assembling and apply sealing compound AMV
188 200 03.

Before installing, fill gap between sealing lips (arrow) of radial-shaft
seals half way with sealing grease 052 128 A1. The open side of the seals face toward the fluid to be sealed in.For installation, lightly coat outer circumference and sealing lip with
ATF or transmission oil, depending on the installation location. Lightly lubricate O-rings before installing, this prevents the rings from
being pinched when inserting. Use only ATF in areas near ATF. Other lubricating substances cause
functional problems in the hydraulic transmission control. When pressing in new seals, make sure the sealing lip does not run
on the same point as the sealing lip of the old seal (use insertion
depth tolerances). After installing, check and if necessary correct fluid levels in the
affected area. ATF in planetary gear page 37
-133
, Gear oil in front
final drive page 39
-1 , Transmission oil in center differential page
39
-40
, Transmission oil in rear final drive page 39
-94
. Capacities
and specifications page 00
-22
onward.
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Nuts, bolts

Loosen bolts in reverse order of tightening
sequence.
Tighten and loosen bolts or nuts for securing
covers and housings without tightening
sequence in diagonal sequence in stages.
Do not cant, and loosen and tighten especially
sensitive parts - e.g. valve body - in diagonal
manner in stages.
The tightening torques stated apply to non-oiled
nuts and bolts.
Always replace self-locking nuts and bolts.
Using a wire brush, clean threads of bolts which
are secured with locking compound. Next,
insert bolts using AMV 185 101 A1.
Threaded holes into which self-locking bolts or
bolts with locking compound are threaded in,
must be cleaned (e.g. using threaded tap).
Otherwise there is danger that the bolts may
shear when removed again.

Circlips
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Do not over-stretch circlips.
Always replace damaged or over-stretched
circlips.
Circlips must be fully seated in grooves.

Replace roll pins. Installation position: Slot is longitudinal to line of
force.
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Mounts

Install needle bearings with the lettering on the
bearing (the side with thicker metal) facing the
drift.
Insert bearing with transmission oil or ATF,
depending on installation location.
Tapered roller bearings for output shaft and
differential in rear final drive are low-friction
bearings. Do not grease new tapered roller
bearings additionally for friction torque
measurement. The bearings are already
greased with a special oil from the factory for
this reason.
Do not interchange inner and outer bearing
races with those from other bearings of the
same size.
Tapered roller bearings are allocated to the
date of transmission manufacture and code
letters in the parts catalog.
Always replace tapered roller bearings on one
shaft together and use new bearings from the
same manufacturer.

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Heat tapered roller bearing inner races to
approx. 100 5C before installing. Press in to
stop so that there is no axial play.

Shims
Measure shims at several points using a
micrometer. Different tolerances make it
possible to measure the required shim size
exactly.
Check for burrs and signs of damage. Only
install perfect adjustment shims.
Only install perfect undamaged adjustment
shims.
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Valve body

Replace valve body if shift members are
burnt.
The valve body is allocated to the transmission
code letters parts catalog.

Guided Troubleshooting, Vehicle On Board
Diagnostic (OBD) and Test Instruments

On Board Diagnostic (OBD) is described in:
Repair Manual, 5 Spd. Automatic Transmission 01V On Board Diagnostic (OBD), Repair Group 01, Performing On Board Diagnostic (OBD)

Before performing repairs on the automatic transmission, the
malfunction cause must be determined as precisely as possible via
the VAS5051 Tester in operating modes "Guided Troubleshooting",
"Vehicle Self-Diagnosis" and "Test Instruments."
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