wheel alignment MERCEDES-BENZ R320CDI 2007 R171 Owner's Manual

472 Practical hints
Where will I find ...?
First aid kit
The first aid kit is stored under the cargo
compartment floor, see “Vehicle tool kit”
(
page 472).
Vehicle tool kit
The vehicle tool kit is stored under the car-
go compartment floor.
The vehicle tool kit includes:

Towing eye bolt

Wheel wrench

Alignment bolt

Vehicle jack

Fuse chart

Spare fuses

Fuse extractor

Collapsible wheel chock

Wheel bolts for spare wheel
(if applicable, see “Mounting the spare
wheel” (
page 500))1Cargo compartment floor, lowered
2Handle cover
Open the tailgate (page 123).
Push in handle cover2 and pull
handle in direction of arrow.
Lift cargo compartment floor 1.
iCheck expiration dates and contents for
completeness at least once a year and replace
missing / expired items.

473 Practical hints
Where will I find ...?
3Securing hook
Release securing hook 3 (located be-
low the floor handle) from holder.3Securing hook
4Cargo compartment floor, raised
5Upper cargo compartment lip
Engage securing hook 3 on upper
cargo compartment lip 5.
You can now access the vehicle tool kit.
To remove the vehicle tool kit storage
well casing, proceed as described
on (
page 476).6Wheel bolt wrench
7Electric air pump
8Jack
9Spare fuses, fuse extractor, fuse chart
aSpare wheel (collapsible tire)
bAlignment bolt
cTowing eye bolt
dCollapsible wheel chock
eSpare wheel bolts
fVehicle tool kit storage well casing
To remove jack8, loosen the hook
and loop fastener.
!With the cargo compartment cover blind*
installed behind the third-row seats
(
page 306), disengage cargo compartment
cover blind* and flip it forward. Otherwise the
strap of the securing hook could damage the
cargo compartment cover blind*.

500 Practical hints
Flat tire
Removing the wheel
1Alignment bolt
Unscrew upper-most wheel bolt and
remove.
Replace this wheel bolt with alignment
bolt1 supplied in the vehicle tool kit
(
page 472).
Remove the remaining wheel bolts.
Remove the wheel.Mounting the spare wheel
1Wheel bolt for 18", 19", 20" and 21"
light alloy wheels and R 63 AMG spare
wheel
2Wheel bolt for 17" light alloy wheels or
18" spare wheel (located in trunk with
spare wheel)Clean contact surfaces of wheel and
wheel hub.
!Do not place wheel bolts in sand or dirt. This
could result in damage to the bolts and wheel
hub threads.
!Wheel bolts2 must be used when mount-
ing 17" wheels or the 18" spare wheel with
collapsible tire. The use of any wheel bolts other
than wheel bolts2 for 17" wheels or the
18" spare wheel with collapsible tire will physi-
cally damage the vehicle’s brakes.
!To avoid paint damage, place wheel flat
against hub and hold it there while installing first
wheel bolt.
Warning!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. Do not continue to
drive under these circumstances! Contact
an authorized Mercedes-Benz Light Truck
Center or call Roadside Assistance.
Incorrect wheel bolts or improperly tight-
ened wheel bolts can cause the wheel to
come off. This could cause an accident.
Make sure to use the correct wheel bolts.

501 Practical hints
Flat tire
Guide spare wheel onto the alignment
bolt and push it on.
Insert wheel bolts and tighten them
slightly.
Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.Inflating the collapsible tire
Take the electric air pump out of the
vehicle tool kit storage well
(
page 472).
Warning!G
Only use genuine equipment
Mercedes-Benz wheel bolts. Other wheel
bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise the vehicle
could fall off the jack.Warning!G
Inflate collapsible tire only after the wheel is
properly mounted.
Inflate the collapsible tire using the electric
air pump (
page 472) before lowering the
vehicle.
Warning!G
Observe instructions on air pump label.
!Do not lower the vehicle before inflating the
collapsible tire. Otherwise the rim may be dam-
aged.


519 Practical hints
Towing the vehicle
Removing cover
Press mark on cover1 as indicated by
the arrow.
Lift off cover1 to reveal the threaded
hole for towing eye bolt.
Installing towing eye bolt
Take the towing eye bolt and wheel
wrench from the vehicle toolkit
(
page 473).
Screw towing eye bolt in to its stop and
tighten with wheel wrench.Removing towing eye bolt
Loosen towing eye bolt counterclock-
wise with wheel wrench.
Unscrew towing eye bolt.
Store the towing eye bolt and wheel
wrench back into the vehicle toolkit
(
page 473).
Engage cover1 at top and press at
bottom.
Installing cover
Engage cover1 at top and press at
bottom.
Stranded vehicle
Freeing a stranded vehicle, on which the
wheels are dug into sand or mud, should
be done with the greatest of care, espe-
cially if the vehicle is heavily loaded.
Avoid pulling the vehicle abruptly or diago-
nally, since it could result in damage to the
chassis alignment.
Never try to free a vehicle that is still cou-
pled to a trailer.
If possible, a vehicle equipped with trailer
hitch receiver should be pulled backward
in its own previously made tracks.