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  #1  
Old 05-08-2010, 09:31 AM
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Posts: 185
Lower Control Bushings

W126 84 500 SEl

Trying to press in lower control arm bushings.

What part is the best to press on (the outer ring?) Did that and it collapsed.

Pildenski suggests turning the caps on a lathe just to "true" them I guess taking off a couplel thousandths, but I feel should not have to do this.

Also, through out the forum on suspension rebuilding I see certain parts should be "torqued/tightened" only after vehicle is on it's wheeel with the car weight on it.
Which parts are these in particular?


I am a big believer in torque wrenchs but I feel all the torque values listed here are somewaht overkill. Don't think a dealer mechanic etc; torques them.

They would strarve to death, they just get things tight with an impact.

I feel critical areas such as bearing, trans valve bodies, cyclinder heads and anything that may warp should be torqued.

Just my opinion.

God Bless
John
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  #2  
Old 05-11-2010, 10:14 AM
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Posts: 436
John,


Did you press out the old outer shell from the control arm or is it still there? Measure the 2 and and the ID of the hole(both sides). Some of these have a taper and your suppose to press them in from one side.

The rubber parts bushing- the bolts should be tightened with the car settled- you don't want that stuff twisting around. Want zero twist in the bushing when it's driven straight.
I torque everything I can. I think all the suspension you can get to them quite easily. I may snug things down with an impact gun but then go back and finish the job by using a torque wrench. IT doesn't take much extra time. Most mechanics which don't use a torque wrench simply are lazy or don't realize how far off they can be from the fsm recommended torque.

Michael
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  #3  
Old 05-11-2010, 12:44 PM
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Quote:
Originally Posted by samiam44 View Post
John,


Did you press out the old outer shell from the control arm or is it still there? Measure the 2 and and the ID of the hole(both sides). Some of these have a taper and your suppose to press them in from one side.

The rubber parts bushing- the bolts should be tightened with the car settled- you don't want that stuff twisting around. Want zero twist in the bushing when it's driven straight.
I torque everything I can. I think all the suspension you can get to them quite easily. I may snug things down with an impact gun but then go back and finish the job by using a torque wrench. IT doesn't take much extra time. Most mechanics which don't use a torque wrench simply are lazy or don't realize how far off they can be from the fsm recommended torque.

Michael
Thanks for your reply.

What do you mean "press them in from one side" ?

Again, thank you!
John
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  #4  
Old 05-11-2010, 03:49 PM
compress ignite's Avatar
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There's a Correct side to "Press In" from

There may also be a Radial Orientation that may be needed to be observed and
followed.
The Mercedes Service Manual and a proper Torque Wrench are always the first
steps in Happy Wrenching.
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  #5  
Old 05-11-2010, 06:47 PM
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[QUOTE=compress ignite;2465126]There may also be a Radial Orientation that may be needed to be observed and
followed.
The Mercedes Service Manual and a proper Torque Wrench are always the first
steps in Happy Wrenching.[/QU

You are joking, Right??
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  #6  
Old 05-13-2010, 11:13 AM
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Posts: 436
John,

Maybe you should pay the MB dealership(or indy) an hour to install a few bushings? If they are nice, you can watch and learn what you are doing wrong.



Michael
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