Aluminum hub cap
Toremove:position socket2on hub cap1.
The socket can befound inthe tire-changetool kit.
Position wheel wrench3on socket2.
Using wheel wrench3, turn hub cap1counter-clockwise andremoveit.
Toinstall:position hub cap1and turn untilit is completelyflush withthe wheel.
Position socket2on hub cap1.
Attachwheel wrench3tosocket2andtightenthe hub cap clockwise.Specified tighteningtorque:18lb-ft(25 Nm).
Raisingthevehicle whenchanging a wheel
Requirements:RThere are no persons inthevehicle.
RThevehicle has been preparedfor a wheelchange (→page 409).
RThe hub caps havebeenremoved(→page 409).
Important notes on usingthe jack:
RUse onlythevehicle-specific jackthat hasbeentested and approvedbyMercedes-Benztoraisethevehicle.
RThe jack is only designedforraising andholdingthevehiclefor a short time while awheel is beingchanged and notfor mainte‐nanceworkunderthevehicle.
RThe jack must be placed on afirm,flat andnon-slip surface. If necessary,use a large,flat, load-bearing, non-slip underlay.
RThefootofthe jack must be positionedverti‐cally underthe jack support point.
Rules of conduct whenthevehicle israised:
RNever placeyour hands orfeetunderthevehicle.
RNever lie underthevehicle.
RDo notstartthe engine and do notreleasethe electric parking brake.
RDo not open or close any doors orthe trunklid.
41 0Wheels and tires
\nWARNINGRisk of accident from losing awheel
Oiled, greased or damaged wheel bolt/wheelnutthreads or wheel hub/wheel mountingboltthreads can causethe wheel bolts/wheel nutstocome loose.
As aresult,you could lose a wheel while driv‐ing.
Never oil or greasethethreads.
Intheevent of damagetothethreads,contact aqualified specialistworkshopimmediately.
Havethe damaged wheel bolts or dam‐aged hubthreadsreplaced.
Do not continue driving.
Observethe information onthechoice oftires (→page 405).
For tires with a specified direction ofrotation, anarrowonthe sidewall ofthe tire indicatesthecorrect direction ofrotation. Observethe direc‐tion ofrotation when installing.
Slidethe wheeltobe mounted ontothealignment bolt and push it on.
\nWARNINGRisk of injuryfrom tighteningwheel bolts and nuts
Ifyou tightenthe wheel bolts or wheel nutswhenthevehicle israised,the jack could tip.
Only tighten wheel bolts or wheel nutswhenthevehicle is onthe ground.
Be suretoobservethe instructions andsafety notes on "Changing a wheel"(→page 405).
For safetyreasons, onlyuse wheel boltswhich havebeen approvedbyMercedes-Benz andforthe wheel inquestion.
NOTEDamagetopaintwork ofthe wheelrim when screwing onthefirst wheel bolt
Ifthe wheel hastoo much play when screw‐ing inthefirst wheel bolt,the wheelrim paintcan be damaged.
Pressthe wheelfirmlyagainstthewheel hub when screwing onthefirstwheel bolt.
Tightenthe wheel boltsevenly in a diagonalpattern inthe order indicated untiltheyarefinger-tight.
Unscrewthe alignment bolt.
Tightenthe last wheel bolt until it isfinger-tight.
Lowerthevehicle (→page413).
Loweringthevehicle after a wheelchange
Requirements:RThe new wheel has been installed(→page412).
Placetheratchet ontothe hexagon nut ofthejack sothatthe letters "AB" are visible.
Tolower thevehicle:turntheratchet ofthejack counter-clockwise.
Wheels and tires413
