Front wheel bearing
Thread Starter
Junior Member
Joined: Jan 2019
Posts: 64
Likes: 3
GLK350
Front wheel bearing
Recently had my car in to replace a failing idler pulley, and they mentioned that the front driver wheel bearing was going out.
I changed the front brake pads, and rotors, and found that wheel hub to be more difficult to turn than the other side, and stopping as soon as I let it go, where as the other side would continue to spin for a few moments.
Google gives me lots of DIY wheel bearing replacement videos for Mercedes, but none that I found seemed to show the same style of bearings that FCPEuro shows me as replacement parts for my vehicle.
I don’t have 4matic, so am I correct in assuming that both the inner, and outer wheel bearing are housed within the easily removed hub assembly that the rotor mounts to, and can be replaced by ordering a hub with bearings?
thank you!
I changed the front brake pads, and rotors, and found that wheel hub to be more difficult to turn than the other side, and stopping as soon as I let it go, where as the other side would continue to spin for a few moments.
Google gives me lots of DIY wheel bearing replacement videos for Mercedes, but none that I found seemed to show the same style of bearings that FCPEuro shows me as replacement parts for my vehicle.
I don’t have 4matic, so am I correct in assuming that both the inner, and outer wheel bearing are housed within the easily removed hub assembly that the rotor mounts to, and can be replaced by ordering a hub with bearings?
thank you!
MBWorld Fanatic!
Joined: Sep 2014
Posts: 1,051
Likes: 217
From: LaLaLand
2015 GLK350 & 2020 C300
You can't easily replace it without a hydraulic press, E24 socket, torque wrench, giant cir-clip pliers. When the replacement is finished, you will need an alignment.
I had some new hubs black oxide for corrosion resistance and the front wheel bearings need to be pressed into the hub. After these two are assembled, then you press them into the steering knuckle. I still have the front wheel bearings in storage and they do have some resistance if you spin them.
I had some new hubs black oxide for corrosion resistance and the front wheel bearings need to be pressed into the hub. After these two are assembled, then you press them into the steering knuckle. I still have the front wheel bearings in storage and they do have some resistance if you spin them.
Thread Starter
Junior Member
Joined: Jan 2019
Posts: 64
Likes: 3
GLK350
I realize that changing just the bearing requires a press.
What I couldn’t find clarification on was whether or not the inner bearing is part of the hub assembly, like the outer bearing is.
If the inner bearing is part of the hub assembly, then it looks like the hub can remover with an Allen wrench, excluding the necessary tools to remove the brakes/rotor, which I have, and feel confident doing.
If it’s a part of the assembly behind the hub, that I don’t care to attempt.
What I couldn’t find clarification on was whether or not the inner bearing is part of the hub assembly, like the outer bearing is.
If the inner bearing is part of the hub assembly, then it looks like the hub can remover with an Allen wrench, excluding the necessary tools to remove the brakes/rotor, which I have, and feel confident doing.
If it’s a part of the assembly behind the hub, that I don’t care to attempt.
Super Member
Joined: Aug 2011
Posts: 861
Likes: 38
From: Philly area
350 GLK, C280
You press out of the hub and off the spindle. The bearing will come apart and cannot be reused. It takes a hydraulic press and some fabricated holders to do this job. It is not time consuming if you have the fixtures and press, but can't be done without them.
MBWorld Fanatic!
Joined: Sep 2014
Posts: 1,051
Likes: 217
From: LaLaLand
2015 GLK350 & 2020 C300
I don't know how to answer your question..... the sealed bearing has an inner and outer race. The outer race is pressed onto the knuckle. The inner race is pressed onto the hub.
If you had 4matic, the entire steering knuckle has to come off no matter what. You can't use a puller to take out the bearing. You can try to use a puller for the bearing and hub for rear-wheel drive, but you need to figure which adapters to use. It is just easier to take it off the car and use a hydraulic press.
Here's my front assembly still waiting to be installed. As you can see, I have already carefully pressed the bearing onto the hub to the correct height.
If you had 4matic, the entire steering knuckle has to come off no matter what. You can't use a puller to take out the bearing. You can try to use a puller for the bearing and hub for rear-wheel drive, but you need to figure which adapters to use. It is just easier to take it off the car and use a hydraulic press.
Here's my front assembly still waiting to be installed. As you can see, I have already carefully pressed the bearing onto the hub to the correct height.
Trending Topics
Thread Starter
Junior Member
Joined: Jan 2019
Posts: 64
Likes: 3
GLK350
That answers my initial question perfectly!
I apologize for any confusion, I don’t know what some of these parts are called, clearly.
There’s a part of the bearing assembly in the knuckle (the race?), which has to be removed.
That’s all I was trying to clarify. Whether any part of the bearing “stuff” was outside of the wheel hub.
I apologize for any confusion, I don’t know what some of these parts are called, clearly.
There’s a part of the bearing assembly in the knuckle (the race?), which has to be removed.
That’s all I was trying to clarify. Whether any part of the bearing “stuff” was outside of the wheel hub.
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
