What are these and how can I change them? - Page 2 - PeachParts Mercedes-Benz Forum

POS · #16 09-04-2010, 09:00 AM

Rear subframe mounts; PITA to replace but worth it.

Billybob · #17 09-04-2010, 02:27 PM

Semantics aside! It is clear that the original poster either does not possess or have access to the factory literature such as the FSM or the EPC to ferret out the official nomenclature involved or he would not have posted his question as he had.

I stand by my original post to this thread:

Quote:

Originally Posted by Billybob

They are most commonly referred to as the rear differential mounts.

And offer in concurrence the following from the forum’s sponsor parts operations (and by implication every World Pac site):

http://catalog.peachparts.com/ShopByVehicle.epc?q=1986-Mercedes--Benz-300e-Transmission&yearid=1986%40%401986&makeid=63%40%40MERCEDES+BENZ%40%40X&modelid=6198%3AED%7C10000013%3AMBC%7C1507%40%40300E&catid=241185%40%40Transmission&subcatid=241372@@Differential+Mount&mode=PD

http://www.allpartsexpress.com/ShopByVehicle.epc?q=1986-MERCEDES--BENZ-300e--/--L6_3.0l-Rear--End--/--Suspension&yearid=1986&makeid=MERCEDES+BENZ%40%40MERCEDES+BENZ%40%40X&engineid=1193813%40%40300E++%2F+L6%5F3%2E0L%40%40300E&catid=Rear+End+%2F+Suspension&subcatid=Rear%20Differential%20Mount&mode=PA

These listings give clear evidence to the additional fact that there are both front and rear differential mounts as they are “commonly referred to” for the OP’s 124 chassis vehicle.

Gilly · #18 09-04-2010, 10:28 PM

Quote:

Originally Posted by POS

Rear subframe mounts; PITA to replace but worth it.

The parts being discussed definitly aren't subframe mounts, those are where the bolts are that hold the subframe to the body structure.

Billybob · #19 09-04-2010, 10:43 PM

Quote:

Originally Posted by Gilly

The parts being discussed definitly aren't subframe mounts, those are where the bolts are that hold the subframe to the body structure.

True, but he's on the money about how they sure can be a PITA to replace! I've now got the Klann tool to remove and install the subframe mounts and after doing them other ways it's a great investment! Turns a battle of frustration into a managable operation. The difficulty of fighting rubber that can flex and pull but never let go can make a job long and hard. The Klann tool lets you drop one side of the subframe at a time to R&R the mounts on one side at a time. The hard part is done by the unrelenting pulling screw!

Chas H · #20 09-04-2010, 11:49 PM

Posted by Gilly
On the "semantics" episode, I was siding with ChasH until the statement, well here, I'll quote it:

Quote:
"Fact is the final drive might not contain a differential."

Ummm, can you give an example of that, I'm confused and will readily admit it.

A final drive might have what is called a "spool", which drives both wheels equally. Sometimes the differential gears are welded to give the same effect.

http://www.weirperformance.com/spoolslimitedslipunits.html

Chas H · #21 09-04-2010, 11:53 PM

Quote:

Originally Posted by Cal Learner

Boys, take your playground spat outside. The OP just asked for a little help identifying these parts. Typically called differential bushings, but EPC refers to them as rubber mounts for the axle housing to rear subframe. The photos tell me yours are overdue for replacement. P/N 124-352-77-65

I answered the OP in the first reply to his questions.
As you have found, Benz does not refer to the item in question as a differential mount, as suggested by others.

Chas H · #22 09-04-2010, 11:55 PM

Quote:

Originally Posted by Billybob

Come on now, your continued ranting just makes you sound confused and desperate if you don't stop the family will take the keyboard away from you. The original poster just wanted the information to fix his car, no need for you to get frustrated and agitated!

I answered the OP questions. You're the one barging in with insults and just plain wrong terminology, in many more words than I posted.

http://www.arthurmurrayboston.com/

Gilly · #23 09-05-2010, 05:45 AM

Oh, a locker, alright. Doesn't "differentiate". Kind of a rare thing to see. I did eBay a decal once for "Detroit Locker", which seemed to be for drag cars or something, and when I was a kid and found that at a swap meet, that's what I found out what a "Locker" was.
Has anyone else replaced these bushings by hacksawing the outer collar out of the subframe? IIRC I did this and didn't need to remove "that thing that the halfshafts bolt to".

Gilly

david s poole · #24 09-05-2010, 07:54 PM

well put gilly,you silver tongued devil you.-------the other parts of that rear suspension that squeek are the outermost bushings that support the rear wheel assembly.that doesn't preclude the replacement of the rear diff support bushings if they are needed and most are.

Gilly · #25 09-05-2010, 09:16 PM

TY Mr Poole........

big dog 2 · #26 09-05-2010, 11:14 PM

David!

My 1989 300E has a light clunking sound from the rear. My two bushings discussed in this thread are also shot. The other link bushings are old rubber but visually appear to be OK. Could these bushings be the culprit or maybe the subrame mounts?

david s poole · #27 09-06-2010, 08:41 AM

the bushing on the left side will be the worst and it can cause a loud clunk with foot on brake as you shift into gear.

big dog 2 · #28 09-06-2010, 09:07 AM

No noise under those circumstances. Must be coming from somewhere else. Even had a indy check it out and they could not find anything either. Occurs with more lateral movements than vertical.

Did not mean to take over this thread but I thought these two bushings were very suspect.

david s poole · #29 09-07-2010, 12:12 PM

the first suspects are the two links that are set at a 45deg angle from the top of the rear wheel assembly to the front of the subframe.

big dog 2 · #30 09-07-2010, 10:01 PM

David!

Thanks for your suggestion!

Forgot to mention the two links I believe you are talking about were recently replaced. Called the Thrust or Push links because the bushings were bad. Still have that annoying sound at low speeds but not as loud. Probably not a safety issue but more of an annoyance. I know you really cannot tell the condition of the other bushings by visual inspection but this one has me a bit puzzled. I really thought the bushings mentioned in the original post could have been the culprit. I apologize for butting in on this thread!