2002 MERCEDES-BENZ SLK CLASS Owners Manual

206 Tires, wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Spare wheel bolts
1Wheel bolt for wheel rim size 7 J x 16 H 2
and 8 J x 16 H 2
Wheel bolt for AMG wheel rim size 7
1/2 J x 17 H 2
and 8
1/2 J x 17 H 2
Wheel bolt for spare wheel rim size 4
1/2 B x 16 H 2
2Wheel bolt for spare wheel rim size 4
1/2 B x 15 H 2
(located with tire air pump)Note:
Wheel bolts (2) must be used when mounting spare
wheel rim size 4
1/2 B x 15 H 2.
21
P40.10-2154-26
Wa r n i n g !
Be sure to use the original length wheel bolts when
remounting the original wheel after it has been
repaired.

207 Tires, wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Changing wheelsMove vehicle to a level area which is a safe distance
from the roadway.
1. Set parking brake and turn on hazard warning
flasher.
2. Move selector lever to position “P” and turn off
engine (manual transmission to 1st or reverse gear).
3. Prevent vehicle from rolling away by blocking
wheels with wheel chocks (not supplied with
vehicle) or sizable wood block or stone. When
changing a wheel on a hill, place chocks on the
downhill side blocking both wheels of the other
axle. On a level road, place one chock in front of and
one behind the wheel that is diagonally opposite to
the wheel being changed.
The jack is designed exclusively for jacking up the
vehicle at the jack tubes built into either side of the
vehicle. To help avoid personal injury, use the jack
only to lift the vehicle during a wheel change.
Never get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from the area
under the lifted vehicle. Always firmly set parking
brake and block wheels before raising vehicle with
jack.Do not disengage parking brake while the vehicle is
raised. Be certain that the jack is always vertical
when in use, especially on hills. Always try to use
the jack on level surface. Be sure that the jack arm
is fully inserted in the jack tube. Always lower the
vehicle onto sufficient capacity jackstands before
working under the vehicle.

208 Tires, wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
4. Using the wrench, loosen but do not yet remove the
wheel bolts.5. Remove the protective cover from the jack support
tube opening by inserting the screwdriver (supplied
in the tool kit) in the opening and prying it out.
The tube openings are located directly behind the
front wheel housings and in front of the rear wheel
housings.

209 Tires, wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index 6. Holding the jack, unfold pin (1) and handle (2).
Insert pin fully into the tube hole up to the stop.
Crank handle clockwise until jack base (3) meets
the ground. Place jack on firm ground. Position the
jack so that it is always vertical (plump-line) as seen
from the side (see arrow), even if the vehicle is
parked on an incline.
7. Jack up the vehicle until the wheel is clear of the
ground. Never start engine while vehicle is raised.8. Unscrew upper-most wheel bolt and screw in
alignment pin (4) supplied in the tool kit. Remove
the remaining bolts. Keep bolt threads protected
from dirt and sand.
9. Remove wheel. Grip wheel from the sides. Keep
hands from beneath the wheels.

210 Tires, wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Important!
For ease of handling and proper unfolding of tire during
its inflation when installing spare wheel with
collapsible tire, first mount the spare wheel, then inflate
the tire.
10. Clean contact surfaces of wheel and wheel hub.
Install wheel on wheel hub. Insert proper wheel
bolts and tighten them snugly.
Unscrew the alignment pin (4) to install the last
wheel bolt.
11. Inflate collapsible spare tire. (See next page for
detailed instructions).Important!
When installing spare wheel with collapsible tire, make
certain to use the correct wheel bolts, supplied in the
vehicle tool kit.
To avoid paint damage, place wheel flat against hub and
hold it there while installing first wheel bolt.
12. Lower vehicle. Remove jack and insert jack tube
cover.

211 Tires, wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Notes:
Before storing the jack, it should be fully collapsed, with
pin and handle folded in.
The removed road wheel can be stored under the
luggage cover in a protective cover supplied with
vehicle. The collapsible spare wheel should be returned
to the wheel well.13. Using the wrench, tighten the five bolts evenly,
following the sequence illustrated, until all bolts are
tight. Observe a tightening torque of 80 ft.lb.
(110 Nm).
14. Ensure proper tire pressure.
Wa r n i n g !
Always replace wheel bolts that are damaged or
rusted.Never apply oil or grease to wheel bolts.Damaged wheel hub threads should be repaired
immediately.Incorrect mounting bolts or improperly tightened
mounting bolts can cause the wheel to come off.
This could cause an accident. Be sure to use the
correct mounting bolts.

212 Tires, wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Inflating the collapsible spare tire
(SLK 230 Kompressor and SLK 320 only)
The air pump is located inside the wheel well in the
trunk.
1Filler hose
2Electrical plug
3Pressure gauge with vent screw1. Remove air pump from storage compartment inside
trunk.
2. Open lid and pull out air hose with pressure gauge
and electrical plug.
Observe instructions on air pump label.
3. Unscrew tire valve cap from spare wheel tire valve.
4. Screw filler hose onto tire valve.
5. Plug air pump electrical plug into vehicle cigar
lighter.
6. To switch on air pump, turn key in steering lock to
position 1.
Important!
Do not start engine.
P40.10-2124-26
1
0
45 6max. 6 min
A 170 584 01 38 AIR COMPRESSOR 23
Mercedes-Benz
2
3
2 1
1
2,5 bar
36 psi1
0 23
4
5
620PSI
BAR40
60
80
LUFTPRESSER12
12
3
Wa r n i n g !
To prevent possible injury when unscrewing air
pump filler hose from tire valve after inflating the
tire, use a rag since the tire valve could be hot.

213 Tires, wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index 7. Operate air pump (approximately 5 minutes) until
pressure gauge displays 36 psi (2.5 bar).
8. To switch off air pump, turn key in steering lock to
position 0.
9. Unscrew filler hose from tire. Reinstall tire valve
cap.
Note:
Excessive tire air pressure should be released using the
vent screw.Storing spare wheel in wheel well
Deflate spare tire:
1. Unscrew valve stem removal tool, which is a part of
the valve cap, from tire valve.
2. Using the valve stem removal tool, open tire valve
slightly by turning the tire valve insert
counterclockwise to release air pressure.
3. When the tire air pressure has been released,
remove tire valve insert (protect it from dirt and
sand) using the previously removed tire valve cap.
4. Once all air is out of the tire, and the tire has
collapsed to its original shape, reinstall the tire
valve insert and valve cap.
Place spare wheel in wheel well and secure it with air
pump holder. Turn pump holder clockwise to its stop.