1990 VOLKSWAGEN TRANSPORTER Rear

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VEHICLE OPERATION

For
best roadability adjust your load to the
maximum allowed tongue load. To be sure

measure
tongue load of loaded trailer on
bathroom
scales.

Check
that
both sides of your trailer can be

seen
from the driver's seat. If necessary in­
stall extended rear-view mirrors.

Check
proper working of vehicle and
trailer lights.

Check
cold
tire
pressure of both vehicle

and
trailer.

Be
sure trailer safety chains are properly

connected
from trailer to the hitch on the

vehicle.
Leave enough slack in the chains
to permit turning corners.

Trailer
towing
tips
Your
vehicle handles differently when tow­ ing a trailer because of the additional
weight. Safety, performance and economy
will greatly depend on how carefully you
load
your trailer and operate your "rig."
Before
you actually tow your trailer, prac­
tice turning, stopping and reversing in an
area
away from
traffic
until
you learn the
feel of your vehicle and trailer
unit.

Reversing
is
difficult
and requires practice.

Steering
while reversing is generally oppo­
site of
that
when backing your vehicle with­
out a trailer.

Observe
speed limits. In some areas

speeds
for vehicles towing trailers are lower than for regular vehicles.
Maintain a greater distance between your

vehicle
and the one in
front.
You will need more room to stop.

When
passing remember
that
you cannot
accelerate
as fast as you normally would

because
of the added load. Make sure you
have
enough room to
pass.
After passing
allow plenty of room for your trailer before

changing
lanes again.

Avoid
jerky starts or sudden acceleration.
Slow
down in crosswinds and on rougi"

roads.
Be especially carefull when
pas­

sing
other vehicles and trucks.

When
parking always block the wheels o: both vehicle and trailer. Do not park
with
a
trailer on a slope. If it cannot be avoided dc
so
only after the following:
• Apply brakes.
• Have someone place wheel blocks
under both vehicle and trailer wheels.
• With wheel blocks in place slowly re­

lease
brakes
until
wheel blocks absorb the

load.

• Apply parking brake.
•
Place
transmission in
"P"
for automatic
or in
first
or reverse gear for manual trans­
mission.

74


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VEHICLE
OPERATION

IVING
YOUR
SYNCRO

me Vanagon/Transporter Syncro is
quipped
with
a new type of four-wheel :'>/e system, very much
different
from

rcnventional systems
that
have to be man- -=i!y engaged when needed. The
Vol­

kswagen all wheel drive system is always

e-gaged.
Only the amount of power being
-ansmitted to the
front
and rear wheels
:~anges
according to requirements.

Cue
to this extraordinary drive concept,

:~e
Syncro is a very efficient road vehicle I
nich
has a wide variety of
uses
and appli-
:ations. It has proved its virtues in poor Bather and road conditions and
posses­

ses
limited off-road capabilities.
This
chapter is provided to help you to
sen­

sibly and safely use the superior driving
characteristics of the Vanagon Syncro to
their best advantage. It also contains tech­
nical
information and operating instruc­
tions to the extent
that
these vary
from

those applicable to the conventional
Vana­

gon or Transporter.

Be
sure to carefully read this chapter be­
fore starting to drive your Syncro so
that

you
will
become thoroughly familiar
with
its features and be able to operate it cor­
rectly and safely. Always heed the warn­
ings and other instructions contained in
this chapter and in your Owner's
Manual.
Because
the Vanagon/Transporter Syncro

is
not an off-road or all terrain vehicle, this
chapter does not contain all of the informa­

tion
required to operate such a vehicle under all types of off-road or weather
con­

ditions.

Above
all use common
sense.
Do not let the excellent traction of your Vanagon/
Transporter Syncro lead you to under­ estimate the difficulties and risks involved in driving on wet, slippery and rough road

surfaces.
Always drive defensively and
adapt vehicle operation and driving speed
to road,
traffic
and weather conditions.


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VEHICLE
OPERATION

The
function
of the
all-wheel
drive
and how it
works

In contrast to conventional four wheel
drive systems
that
require transmissions
to be manually engaged when needed,
the Vanagon/Transporter Syncro all-wheel
drive system is always engaged. Only the
amount of power being transmitted to the

front
and rear wheels changes automati­
cally
as the road surface demands.
The automatic distribution of power is
accomplished
through a
fluid
shear
cou­

pling (viscous coupling)
that
is
part
of the

front
axle. The design of the viscous
cou­
pling keeps driving force losses to a mini­
mum while distributing the forward
thrust

to all four wheels when needed. When the going gets rough, especially
when wet, slippery or snow covered roads

cause
the rear or
front
wheels to slip, the

viscous
coupling automatically transfers driving force to the other wheels to help
you keep moving.
The distribution of drive forces allows the
Syncro
to adapt to changing road surfaces
and provide increased traction automati­

cally.
The Syncro driver is therefore able to

fully
concentrate on the road and
traffic

conditions.
This
extraordinary drivetrain concep:

makes
the Vanagon/Transporter Syncrc
an extremely efficient road vehicle suit­
able for a wide variety of uses and applica­
tions. While it has proved is ability to han­
dle poor weather and road conditions anc
has
limited off-road capabilities, re­
member your Vanagon/Transporter
Syn­

cro is not an off-road or all-terrain vehicle.
76


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VEHICLE
OPERATION

2 3
|B25-408|

' -
Front axle final drive Viscous coupling and viscous coupling
I
-
Prop
shaft
3
-
Rear axle final drive
77


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VEHICLE OPERATION

Advantages off the all-wheel drive

The Vanagon/Transporter Syncro
all-
wheel drive system
has the
following
ad­

vantages over
a
two-wheel drive vehicle:
Driving Power
Driving Power
is
greatly increased
by the

continual all-wheel drive especially
on
snow
and
slippery surfaces, when starting
off from
a
standstill,
and
when driving
on
rough roads.
Within reason, your Vanagon/Transporter Syncro
can go
places where other
vehi­

cles
may
likely
get
stuck.
It is
easier
to
stop
on slippery hills
and get
going again.
Moving Force
As
the
driving force applied
to the
road goes
to
four wheels instead
of two, the

amount
of
slip
is
considerably reduced.
This improves
the
traction between tire and road surface
and
thereby,
the
drive-
ability
on
slippery road surfaces. On vehicles with two-wheel drive,
the
driv­
ing wheels
can
spin
on
slippery surfaces
if

too much acceleration
is
applied. This
greatly reduces tire grip
and can
result
in
loss
of
vehicle control.
By distributing
the
driving forces
to
four
in­

stead
of two
wheels,
the
wheels
of the
Va­ nagon/Transporter Syncro
are
less likely
to spin under
the
same conditions.
Snow tires
With
the
all-wheel drive system
the
Vana­ gon/Transporter Syncro
is
good
for
winter
driving even with standard tires. However,
we recommend
the use of all
season tires
or radial snow tires (M
+
S) with
or
without

studs*,
on all
wheels,
for
better driving,
cornering
and
braking,
in
winter weather.
Details under "Snow tires"
on
page
118

also apply.
Snow chains
Snow chains can improve both road traction
and braking when driving
in
severe winter
weather. Therefore,
use
snow chains
on

your all-wheel drive vehicle when required. For additional information,
see
page
119.
Operation
In contrast
to
conventional all-wheel drive
systems that require transmissions
to be

manually engaged when needed,
the Va­
nagon/Transporter Syncro all-wheel drive
system
is
always engaged. Only
the

amount
of
power being transmitted
to the

front
and
rear wheels changes automati­ cally
as the
road surface demands.
The

Syncro driver
is
therefore able
to
fully
con­

centrate
on the
road and traffic conditions.
The differential lock*
for the
rear axle must only
be
used when
the
vehicle
is
stuck
or
in immediate danger
of
becoming stuck. For further information
on the
differential
lock,
see
page
33.

78 "Check with your local Motor Vehicle Bureau
for

possible restrictions.
'where applicable


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-
VEHICLE
OPERATION

Driving on dry roads

Attention

"his
is an
all-wheel drive multipurpose
rassenger
vehicle which
will
handle
and

maneuver
differently
from
an ordinary
pas­

senger
car in driving conditions which may

occur
on
streets
and
highways
and off-

'oad.
As
with
other vehicles
of
this type,
if

you make sharp turns
or
abrupt maneu­

vers,
the
vehicle
may
roll over
or
may
go
kit
of
control and
crash.
You should read
:he driving guidelines
and
instructions
in

the Owner's
Manual.
The
driver
and all
oassengers
should wear safety belts
at all

times.

Do
not
engage
the
differential lock on nor­
mal
dry
roads
as it
will
not
provide any ad­
vantage. Under these circumstances,
an
engaged differential lock
will
impair the ve-
nicle's
maneuverability and
will
cause
ex­

cessive
tire
wear.
Driving on wet, slippery roads

Due
to the
all-wheel drive,
the
engine
power
is
transmitted evenly
to a
moder­
ately slippery road surface.
On
wet surface

As
with
any
other vehicle, excessive driv­ ing speed on very wet roads can cause hy­
droplaning
and
loss
of
vehicle control.
Therefore, slow down.
The
differential lock* must
not be
engaged.

Important
instructions
on
the
differential

locks
are to be found on page
33/34.

On
slippery surfaces

On
slippery surfaces the rear axle differen­

tial
lock may only be engaged when
start­
ing
from
a
standstill
or at
very low
speeds.

When
the
road surface has improved
the
lock should
be
disengaged again. On
snow covered surfaces

On
a
snow covered road, maintain traction by making gradual changes
in
speed
or
di­
rection. Avoid sudden maneuvers. Be alert
to problems other drivers around you may be having which could create
a
hazardous
situation
for
you.
In heavy snow, maintaining reasonable
momentum
is
important
for
safe vehicle
operation. Try
to
keep moving
by
using
the
L-gear and
a
steady accelerator pedal
at

low
speed.

WARNING
•
Always
maintain
a safe driving

speed,
especially
when
road and

weather
conditions are poor.

•
Excessive
driving speed on very wet
roads can cause hydroplaning and

loss
of vehicle control.

•
Always avoid forceful and
abrupt

braking action.
You
could block all four
wheels simultaneously and lose
con­

trol
of the vehicle.

•
The braking capability of your Vana-
gon/Transporter Syncro is
greatly
de­
pendent on the
traction
of your tires.

'where applicable 79


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VEHICLE CARE
=UELTANK
|he fuel filler neck is located above the -gnt
front
wheel. Syncro model: above the
-;nt rear wheel.
mm key A (see page 7) is used for the lock-
acle
tank cap. The syncro model has a separate key for the lockable tank cap.
capacity of the tank is 16.0 gal/60

:ers
(Reserve is 2.5 gal/10 liters of
total

rapacity).
5/ncro model: 18.5 gal/70 liters (Reserve

2
5 gal/10 liters of
total
capacity). Trouble-free refueling depends on the cor­
rect use of the filler nozzle.

Always
insert the nozzle fully
into
the fuel filler neck, to completely open the spring-loaded flap located
just
below the filler
neck opening. Make sure the filler nozzle

is
not tilted.

Do
not
fill
the fuel tank too quickly, other­
wise the fuel may foam up and cause the
nozzle
to switch off too
soon.

As
soon as the nozzle switches off auto­ matically for the
first
time, the tank is full.
Do
not try to add more fuel, because the

expansion
space in the fuel tank will be
filled - the fuel can then overflow when it
becomes
warm.
WARNING

Never
carry
additional
fuel
containers

in
your
vehicle.
Such
containers,
full
or

empty,
may
leak,
cause an explosion,
or
result
in
fire
in case of a collision.

85


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