Mercedes-Benz 2009 R-Class Operator's Manual page 372

Practical hints
Flat tire
Wheel bolt for 18" and 19" light alloy
1
wheels
Wheel bolt for spare wheel (located in
2
cargo compartment with spare wheel)
!
Wheel bolts must be used when
2
mounting the spare wheel with collapsible
tire. The use of any wheel bolts other than
wheel bolts for the spare wheel with
2
collapsible tire will damage the vehicle's
brakes.
G Warning!
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.
X
Clean contact surfaces of wheel and wheel
hub.
370
! To avoid paint damage, place wheel flat
against hub and hold it there while
installing first wheel bolt.
X
Guide the spare wheel onto the alignment
bolt and push it on.
X
Insert the wheel bolts and tighten them
slightly.
X
Unscrew the alignment bolt.
X
Install last wheel bolt and tighten it slightly.
X
Inflate the collapsible tire ( Y
Inflating the collapsible tire
G Warning!
Inflate collapsible tire only after the wheel
is properly attached.
Inflate the collapsible tire using the electric
air pump before lowering the vehicle.
G Warning!
Observe safety instructions on air pump
label.
! Do not lower the vehicle before inflating
the collapsible tire. Otherwise the rim may
be damaged.
Your vehicle may be equipped with either of
two versions of the electric air pump:
Version 1: The air hose with pressure
R
gauge and the electrical plug are located
behind a flap.
Version 2: The pressure gauge is located
R
in the pump housing. The air hose and
page 370).
electrical plug are located at the bottom of
the pump housing.
The following description applies to both
versions. Differences in usage are expressly
declared.