W203 Front Wheel Bearings

HelpThisDude

Senior Member
Joined
Dec 2, 2008
Messages
649
Reaction score
5
Location
Essex
Your Mercedes
W203 C270CDI, R172 SLK55 AMG
Are the front wheel bearings an easy DIY job? Just wondered why I was getting the usual high priced labour charges.
I want to give it go next weekend, any tips, warning or special tools advice is welcome!

Cheers :)
 

television

Always remembered RIP
Joined
Mar 14, 2005
Messages
164,073
Reaction score
377
Age
89
Location
Daventry
Your Mercedes
2002 SL500, 216 CL500, all fully loaded
I can print off the paper if you wish, its just a matter of working in clean manner, all dead simple to do
 

television

Always remembered RIP
Joined
Mar 14, 2005
Messages
164,073
Reaction score
377
Age
89
Location
Daventry
Your Mercedes
2002 SL500, 216 CL500, all fully loaded
I have sent 3 papers, you do not have to remove the disc if you do not want to, plus yo will not have a clock gauge but most of us do it without
 
OP
HelpThisDude

HelpThisDude

Senior Member
Joined
Dec 2, 2008
Messages
649
Reaction score
5
Location
Essex
Your Mercedes
W203 C270CDI, R172 SLK55 AMG
  • Thread Starter
  • Thread starter
  • #5
Cheers Malcom. The PDF's are excellent (as always)

I just removed the bearings and seal, the grease was red and had shiny bits in it.
I also have damage to the outer race of the outer bearing. I can’t see how I will remove this without a press?
Also, what would be the best way to set up end float without a gauge?
0.01mm of play is tiny! What’s the trick?
 

Number_Cruncher

Senior Member
Joined
Oct 10, 2007
Messages
1,806
Reaction score
3
Your Mercedes
1995 W124 E300D TE
>>0.01mm of play is tiny!

Yes, to set these up properly, you need a dial gauge - there's no alternative if you want to do the job properly.

There's no trick or shortcut that can acheive 0.01mm - it's too small a clearance to feel by hand alone.

Many people bodge the job using rule of thumb methods, but, I would strongly recommend getting hold of a dial gauge, and doing the job right.

Edit: You don't need to spend a fortune, see EBay item 270314190522 by way of an example.
 
Last edited:

television

Always remembered RIP
Joined
Mar 14, 2005
Messages
164,073
Reaction score
377
Age
89
Location
Daventry
Your Mercedes
2002 SL500, 216 CL500, all fully loaded
One of those papers tell you that you use a drift or punch to knock them out (copper/brass) or if nervous ask any local garage.

When I set them up I just tighten until it goes tight , revolving the disc all the time and then back off a quarter turn
 
OP
HelpThisDude

HelpThisDude

Senior Member
Joined
Dec 2, 2008
Messages
649
Reaction score
5
Location
Essex
Your Mercedes
W203 C270CDI, R172 SLK55 AMG
  • Thread Starter
  • Thread starter
  • #8
Excellent, cheers.
 
OP
HelpThisDude

HelpThisDude

Senior Member
Joined
Dec 2, 2008
Messages
649
Reaction score
5
Location
Essex
Your Mercedes
W203 C270CDI, R172 SLK55 AMG
  • Thread Starter
  • Thread starter
  • #9

Attachments

  • HUB.jpg
    HUB.jpg
    395.4 KB · Views: 80

television

Always remembered RIP
Joined
Mar 14, 2005
Messages
164,073
Reaction score
377
Age
89
Location
Daventry
Your Mercedes
2002 SL500, 216 CL500, all fully loaded
On the hub paper it tells you to press out 9c thats the outer race. this must be a spare part as it comes out
 

Number_Cruncher

Senior Member
Joined
Oct 10, 2007
Messages
1,806
Reaction score
3
Your Mercedes
1995 W124 E300D TE
In the repair kit, you should get 2 new inner races, and 2 new outer races. Some careful hammer and drift work is required (It is much much better to press them in, but few people have a press available to them)
 

television

Always remembered RIP
Joined
Mar 14, 2005
Messages
164,073
Reaction score
377
Age
89
Location
Daventry
Your Mercedes
2002 SL500, 216 CL500, all fully loaded
In the repair kit, you should get 2 new inner races, and 2 new outer races. Some careful hammer and drift work is required (It is much much better to press them in, but few people have a press available to them)

MB will press them in as could normal garages. I have used a large vice, or a bench drill, the main thing is to start them off straight
 

whitenemesis

Senior Member
Joined
Dec 21, 2006
Messages
17,977
Reaction score
40
Your Mercedes
CLS55 AMG '05
In the link below, there no outer race for the outer bearing (nearest to road wheel) in the 'repair kit'.

http://www.detali.ru/cat/oem_mb2.as...648716.649&CT=F&cat=69J&SID=33&SGR=030&SGN=01

I have a mark, I assume made by a stuck roller on this race, Will I have to replace the Hub, or can this be fixed? (picture)

The mark is on the outer bearing race, this should be pushed out of the hub. It's part of the bearing race included in the repair kit

A2033300051 - £33

The complete hub and bearings (but without plug and the nut and bolt is available

A2093300325 - £100

You should only need the repair kit.
 
OP
HelpThisDude

HelpThisDude

Senior Member
Joined
Dec 2, 2008
Messages
649
Reaction score
5
Location
Essex
Your Mercedes
W203 C270CDI, R172 SLK55 AMG
  • Thread Starter
  • Thread starter
  • #14
WOW- it has to be said - you guys excellent, thank you for all the info.

I 'chickend' out and let MB do it when I picked up the repair kit.
They stung me for £35 to do both races, but I guess it is sure to be seated straight.
Car bearings just looks so delicate after playing with Trains, I just couldn’t trust my self to hit it!
Thanks again.
 

Number_Cruncher

Senior Member
Joined
Oct 10, 2007
Messages
1,806
Reaction score
3
Your Mercedes
1995 W124 E300D TE
>>Car bearings just looks so delicate after playing with Trains, I just couldn’t trust my self to hit it!

The controls and care required for mounting car wheel bearings are a lot less stringent than the Group Standards requirements for wheelset bearings!
 
OP
HelpThisDude

HelpThisDude

Senior Member
Joined
Dec 2, 2008
Messages
649
Reaction score
5
Location
Essex
Your Mercedes
W203 C270CDI, R172 SLK55 AMG
  • Thread Starter
  • Thread starter
  • #16
Very true, you would expect the best tools and working standards where passenger safety is required. Scary how much is fixed by a sledge hammer, cable ties and adjustables (double sided tape and corn flakes box) Blue peter, eat your heart out.
 

television

Always remembered RIP
Joined
Mar 14, 2005
Messages
164,073
Reaction score
377
Age
89
Location
Daventry
Your Mercedes
2002 SL500, 216 CL500, all fully loaded
I am pleased that you chose that route to go, if you have done loads its not too bad. Pleased its all done
 

ritch

Senior Member
Joined
Aug 14, 2005
Messages
78
Reaction score
0
Location
Ayrshire, Scotland.
Your Mercedes
C200 CDi Sport Edition A
I can print off the paper if you wish, its just a matter of working in clean manner, all dead simple to do

Hi Malcolm,

could you send me a copy too please?

I think one of mine needs doing and not sure if its DIY or a mechanic job - I dont have access to a press...

thanks in advance

Ritch
ritch.w@gmail.com
 

cleverdicky

Senior Member
Joined
Feb 25, 2009
Messages
2,385
Reaction score
2
Your Mercedes
MB
Did one of mine (front one) about a month ago after mot.
Easy & straight forward.
Hammer and punch, turning all the time on wooden block. Then used each old race to tap home new one. Still cant believe they need to be so tight. MUST affect mpg ?
 


ACMS Mercedes Ltd is an independent Mercedes-Benz service specialist based in Walsall. The company provides high levels of customer service and quality workmanship, at competitive prices. Call Mark on 01922 634666 or 07530 456000
Top Bottom