Author Topic: Front wheel bearing caps  (Read 114 times)


  • Enthusiast
  • *
  • Posts: 25
  • W116 Enthusiast
  • Location: Tasmania
Front wheel bearing caps
« on: 18 February 2020, 01:17 PM »
I have been working through as many jobs as I can with my fairly recently acquired W116 and I got to the wheel bearing inspection and found that the caps were completely free of grease which is the opposite of what I think they should be or at least on every other vehicle I have owned. Also the cap looks like it has never been full. Surely the caps need to be full of grease, correct me if I'm wrong? Also what is the copper tag protruding from the fastening clamp? Help

1978 280SE Cream with blue leather interior. With SLS


  • W116 Addict
  • ****
  • Posts: 1,197
  • Chrome Bundts & bundts with white walls are a sin!
  • Location: knoxville, tn
Re: Front wheel bearing caps
« Reply #1 on: 18 February 2020, 01:50 PM »
The hub caps aren't supposed to be "full" of grease, but have just a little in them.  As long as there is grease in the middle of the hub between the two bearings and in the actual bearings you'll be ok.   

The copper spring is supposed to be a grounding noise suppressor for the radio, but over the years there have been several other assumed functions of it.  I can't compete with what the majority thinks, so take any of what you read about it with a grain of salt. haha
1966 250se coupe`, black/dark green leather
1970 600 midnight blue/parchment leather
1971 300sel 6.3, papyrus white/dark red leather
1971 280sel Black/black leather
1973 300sel 4.5, silver blue metallic/blue leather
1976 280s astral silver/blue MB Tex

Diesel 617

  • Classic
  • **
  • Posts: 225
  • Location: Illinois
Re: Front wheel bearing caps
« Reply #2 on: 18 February 2020, 01:59 PM »
The Factory Service manual states the exact amount (in grams) of grease there should be in the cap as well as used in re assembly.  UTN is correct about the copper from what I have read.
X3 1980 300SD Blown Heads, trans -Retired
1980 450SEL Parted out/Scrap
1980 450SEL to Diesel Parted Out/Scrap
1979 280SE Euro Spec Cloth Seats For Sale
1979 300CD Daily Driver - Sold

Inventory of w116 Parts