1990 VOLKSWAGEN TRANSPORTER Owners Manual

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DO-IT-YOURSELF-SERVICE

LIFTING
VEHICLE

The vehicle should
never
be lifted or
jacked
up from underneath the engine
oil
pan, the transmission housing, or the

front
or rear axle.
This
could lead to serious damage.
The same lifting points as illustrated for the hoist also apply when using a floor jack. To
avoid damage to the underbody or chassis

frame,
it is necessary to insert a rubber pad between the floor jack and the lift

points.

Lifting
with workshop hoist
and with floor jack

Make
sure there is sufficient clearance
between pads and vehicle before driving
vehicle on to hoist.
WARNING
When removing components such as engine block, transmission housing,

fuel
tank, wheels,
front
or rear axle, anchor vehicle to hoist or add corre­
sponding weights to maintain the cen­
ter of
gravity.
Otherwise the vehicle
might tilt or slip off the hoist, causing
serious damage or personal
injury.
•
To reduce the risk of serious perso­

nal
injury
and vehicle damage, lift
vehicle only at the special workshop hoist and floor jack lift points illustra­

ted.
Failure to lift vehicle at these points could cause the vehicle to tilt or
fall

from a lift when, for example,
heavy
components such as the engine block
or transmission are removed result­
ing
in a change in vehicle weight and

balance.

•
If you must lift
your
vehicle with a
floor jack to work underneath, be sure
the vehicle is safely supported on
stands
intended for this purpose.
Lifting
points

Front

At the
front
jacking point.
Rear

At rear cross member.
The vehicle must be lifted only at the lift
points illustrated.

Lifting
with vehicle jack Refer to the "Changing a wheel" on page

125.

140


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TECHNICAL DESCRIPTION


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I TECHNICAL
DESCRIPTION

ENGINE
MANUAL
TRANSMISSION

AUTOMATIC
TRANSMISSION

• Four stroke gasoline engine in rear.
• Four cylinder horizontally opposed.
• Crankshaft
with
four main bearings.
• Liquid cooling system, thermostatically
controlled.
• Thermoswitch operated electric fan. • Pressure oil feed
with
gear - type
pump and
full
flow
filter.

• Self-adjusting hydraulic valve filters.
• AFC (Airflow controlled) fuel injection.
•
Paper
element air cleaner.
• Exhaust emission control system
with

activated charcoal
filter
in the fuel system.
• Breakerless electronic ignition. • Single plate, dry clutch.
• Synchronized four speed transmission

and'
differential in one housing
with
com­

mon lubrication.
•
Rear
wheel drive,
with
two constant
velocity joints per drive shaft.
Syncro • Hydraulically operated single plate

clutch.

• Baulk synchronised 4-speed manual
transmission
with
additional Low-speed
traction gear (4+L transmission).
• Permanent four-wheel drive through

viscous
coupling.
• Manually operated differential lock for
rear final drive available as optional extra. • Hydrodynamic torque converter an:
planetary gearing
with
three forward an:
one reverse gear.
• Final drive in separate housing.
•
Rear
wheel drive,
with
two constar:
velocity joints per drive shaft.


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TECHNICAL
DESCRIPTION

FRONTWHEEL SUSPENSION
• Independent upper and lower control
arm
• Stabilizer
•
Coil
springs • Shock absorbers
Syncro • Independent wheel suspension by

means
of double wishbones
with
coil
springs and telescopic shock absorbers.
• Double
jointed
shafts
• Stabilizer bar
•
Viscous
coupling

Steering
•
Rack
and pinion
• Safety steering column REAR WHEEL SUSPENSION
• Independent semi-trailing arms
with

integrated axle support
•
Coil
springs
• Shock absorbers
Syncro • Independent wheel suspension by way
of diagonal arm axle
with
coil springs and

telescopic
dampers.
• Double
jointed
drive shafts
• Differential lock as optional extra.
BRAKES

• Hydraulic dual-circuit power-assisted
brake system
with
pressure regulator for rear wheel circuit. Front wheels
with
disc

brakes,
rear wheels
with
self-adjusting
drum brakes.
• Parking brake for rear wheels.
Body/Chassis • All steel unitized body
• Frame plates reinforced
with
side and

cross
members.

143


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TECHNICAL
DESCRIPTION

EMISSION
CONTROL SYSTEM
In the
interest
of
clean
air Pollution of our environment has become

a
problem
that
is of increasing concern to
all of us. We urge you to
join
us in our ef­

forts
for cleaner air in controlling the pollu­
tants emitted from the automobile.

You
can make a significant contribution to
keeping our air clean by:
• Always using lead free gasoline.
• Not
letting
your vehicle idle
unnecessa­

rily.
• Following the recommended preven­
tive maintenance schedule contained in
the maintenance booklet.
• Not removing or altering the emission
control system.
• Taking the precautions described
below to prevent damage to the emission
control system in your vehicle.

Volkswagen
warrants the Emission
Con­
trol
System in your new vehicle under the
terms and conditions set
forth
in the War­ ranty booklet.

Your
Volkswagen is equipped
with
such a
system,
which contains the following major components.
Catalytic
converter

The catalytic converter is an efficient
"clean-up"
device
built
into
the exhaust system of the vehicle. The catalytic conver­
ter burns the undesirable pollutants in the exhaust gas before it is released
into
the
atmosphere.
The
exclusive
use of
unleaded
fuel
is cri­
tically
important
for the
life
of the
cataly­

tic
converter
and
proper
functioning
of
the
engine.

The
catalytic
converter
will
be
perma­
nently
damaged
by
•
exceeding
the "max"
marking
when

adding
engine
oil (see
page
99)
• push or tow
starting
your
vehicle

•
misfiring
of the
engine

•
turning
off the
ignition
while
the

vehicle
is
moving
or
•
other
unusual
operating
conditions. Do not
continue
to
operate
your
vehicle

under
these
conditions, as
otherwise

fuel
can
reach
the
catalytic
converter.

This could
result
in
overheating
of the
converter,
requiring
its
replacement.

For
maintenance intervals refer to your
Maintenance booklet.

Oxygen
Sensor (OXS)
The oxygen sensor, installed in the exhaust manifold, continuously
senses

the oxygen content of the exhaust and

signals
the information to an electronic
control
unit.

Carbon
canister

The vehicle is equipped
with
a carbon canister to prevent fuel vapor from
esca­
ping
into
the atmosphere.
The vapor is passed
into
the carbon canister, where it is retained when the
engine is turned off. When the engine is running, a valve allows air
into
the canister,
and the fuel vapor is passed to the engine
for combustion.
The system does not require any main­
tenance.

144


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TECHNICAL
DESCRIPTION

To
assure
efficient
operation
of
the
Emis­
sion
Control
System:

•
Have
your
vehicle maintained pro­
perly and in accordance
with
the ser­
vice recommendations as described in
your
Maintenance booklet. Lack of
proper maintenance as
well
as im­
proper use of the vehicle
will
impair
the function of the emission control
system
and
could
lead
to
damage.

•
Do not alter or remove any compo­
nent of the Emission Control System

unless
approved
by
the
manufacturer.

•
Do not alter or remove any device,

such
as heat shields, switches, ignition
wires, valves, which are designed to protect
your
vehicle's emission control

system.

•
Do not continue to operate
your

vehicle if you detect engine misfire or
other
unusual
operating conditions. WARNING
Starting
Do
not leave engine idling unatten­

ded
after starting. If warning lights should come on to indicate improper

operation,
they would go unheeded. Extended idling also produces heat,
which could result in overheating
or other
damage
to
the
vehicle
or
other
property.

Parking
•
Do
not
park
or
operate
the
vehicle
in

areas
where the hot exhaust system
may
come in contact
with
dry grass,

brush,
fuel spill or other material,
which
can
cause
a
fire.
Undercoating

Do
not apply additional undercoating
or rustproofing on or
near
the
exhaust
manifold,
exhaust
pipes,
catalytic
con­

verter
or heat shields. During driving,
the substance used for undercoating
could
overheat
and
cause
a
fire.


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TECHNICAL DATA

ENGINE
DATA/SPARK PLUGS
Engine Maximum
output
SAE net 90 hp at 4800 rpm
Maximum torque SAE net 117,3 ft lb at 3200 rpm

No.
of cylinders 4
Displacement 129 CID (2109 cm3)
Stroke 2.99 in (76 mm)

Bore
3.70 in (94 mm)

Compression
ratio
Fuelf)
9.0:1

Compression
ratio

Fuelf)
Regular
unleaded

Sparkplugs
Bosch
W7CC0

Beru
14L-7CU/14L-7C

Champion
N288

1) Minimum octane rating and
further
details see page 86.

Notes

Spark
plugs are replaced during the Volks­
wagen scheduled Maintenance service. If
you replace the spark plugs between the

Volkswagen
Maintenance services, the
following should be noted: • Engine, spark plugs and the ignition
system are matched. To avoid faulty opera­

tion
or engine damage, use only Original

Volkswagen
spark plugs. It is especially important to note the number of electrodes
and heat value. • Since spark plug specifications may

change
for technical reasons during a cur­
rent
model year, we recommend
that
you
obtain your spark plugs from a Volks­
wagen dealer who has the latest informa­
tion.
146


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TECHNICAL DATA

V-BELTS
CAPACITIES
for waterpump/alternator. 9.5 x 1100 LA
Fuel
tank 16.0 gal/60 liters
for A/C compressor . . . 12.5x1153 LA Syncro:
for power steering .... 9.5 x 1080 18.5 gal/70 liters Noteg
Reserve
(of
total
capacity) >. .. 2.5 gal/10 liters
The V-belts are among the most severely Coolin3
sVstem186
^t/17-5 ll,ers
stressed
parts of a vehicle. The belts there- Automatic
fore have very high quality requirements. transmission fluid (ATF) 3.2 qt/3.0 liters
When replacing a belt, it is not sufficient to Windshield washer container 4.3 qt/4.2 liters
use
just
any belt of the same
size.
For safe
operation, use only Original Volkswagen
Rear
window washer container 1.1 qt/1.0 liters

V-belts
specially designed for your Engine oil

vehicle.
The correct belts can be obtained
with
filter
change 4.8 qt/4.5 liters at your Volkswagen dealership.
without
filter
change 4.2 qt/4.0 liters

Do
not
fill
above "max" mark.
The oil level should be checked while topping up.
Difference between "min" and "max" marks
on the dipsticks is approx. 1 qt/1 liter


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