Author Topic: Front Suspension Bolt Torquing - Lubricated or Dry  (Read 221 times)

PeterPortugal

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Front Suspension Bolt Torquing - Lubricated or Dry
« on: January 12, 2021, 13:27:38 »
Hi All,

Apologies if this has been covered I did try searching the forum before posting and drew a blank.

I have rebulit my front subframe and am going to torque the bolts. This will include upper and lower control arm mounting bolts, subframe mount bolts, lower kingpin bolts, etc.

I have all the correct values available from the BBB but wondered if these values are for dry or lubricated bolts/nuts?

The forum covers cylinder head bolts adequately with a consensus that these should be lubricated. I can't find anything for the subframe / suspension.

Regards

Peter
1963 220se Cabrio
1968 280se Coupe

Jack Jones

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Re: Front Suspension Bolt Torquing - Lubricated or Dry
« Reply #1 on: January 14, 2021, 03:32:36 »
Bolts being torqued should always be clean and dry unless specified otherwise. Lubricating a torqued bolt when not required can cause you to over-tighten the bolt and potentially break it. 
Jack Jones                                                                                                   
1970 280SL 4 Speed
1984 280SL 5 Speed

PeterPortugal

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Re: Front Suspension Bolt Torquing - Lubricated or Dry
« Reply #2 on: January 14, 2021, 10:20:10 »
Hi Jack,

Thanks for the response. It makes good sense to me.

Regards

Peter
1963 220se Cabrio
1968 280se Coupe