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  #1  
Old 05-08-2009, 03:23 PM
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Torque specification

I am replacing the rear diff mount thingy tomorrow. Is there a torque spec for the bolts and is it just "good and tight"?

Another question.... I really dumb/odd question.

I am replacing the rear diff mount AND the front brakes/rotors. I am going to a military autocraft shop which has lifts. I am guessing I would want to lift the car by the wheels when replacing the diff mount? I know I need to lift by the "frame" for the brakes. Is the rear diff going to fall out and when I take the bolts out?

See whatever bay I get tomorrow will be one of two types of lifts or no lift at all. I know it's a silly question.
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Last edited by ashedd; 05-08-2009 at 03:49 PM. Reason: missed concept
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  #2  
Old 05-08-2009, 03:33 PM
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Quote:
Originally Posted by ashedd View Post
I know I need to lift by the wheels for the brakes.
You might want to revisit that concept!!!

For the differential mount, you will need to support the differential itself with something like a floor jack, while the chassis is supported.. The old mount will have stretched, so the new one will not line up like the old one; it's essential to be able to move the differential up/down.

You don't need a lift for either job. A jack and jack stands will work fine and likely cost less.

Stand by for the torque values.

Last edited by tangofox007; 05-08-2009 at 03:44 PM.
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  #3  
Old 05-08-2009, 03:53 PM
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I reworded my post for clarity. I should have prof read it first.

The autocraft shop bays with lifts are $5 per hour. I am a little scared of jack stands. Plus I do not have any. Plus Plus I am living in a hotel while in Va. Although I have done a lot of maintenance in the parking lot I am not too sure a car on jack stands would be a good idea.

Thanks
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90 300TE
83 300SD
85 300TD
92 400E
85 190D

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  #4  
Old 05-08-2009, 04:02 PM
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Quote:
Originally Posted by ashedd View Post
I reworded my post for clarity. I should have prof read it first.

The autocraft shop bays with lifts are $5 per hour. I am a little scared of jack stands. Plus I do not have any.
Maybe things have changed, but I cannot imagine a military auto hobby shop that does not provide jack stands.
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  #5  
Old 05-08-2009, 04:09 PM
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ya they have all sorts of tools to borrow/rent whatever. I have never used an autocraft shop before. But I guess I could use a regular non lift bay with jack stands.. That would solve my lack of an autocraft safety card in order to use the lifts by myself. Otherwise I have to get an employee to operate it.

I have to avoid the parking lot at all costs.. the sun really doesn't agree with me, red hair.
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90 300TE
83 300SD
85 300TD
92 400E
85 190D

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  #6  
Old 05-08-2009, 05:02 PM
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The torque values for the differential mount sre:

Mount to frame: 30 Nm
Mount to differential cover: 120 Nm.
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  #7  
Old 05-08-2009, 05:07 PM
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Quote:
Originally Posted by ashedd View Post
Plus Plus I am living in a hotel while in Va.

Thanks
Where in Va?
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  #8  
Old 05-08-2009, 06:01 PM
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$5/hour for a shop bay? Oh man I wish I could get that!
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Old 05-08-2009, 07:30 PM
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Originally Posted by Simpler=Better View Post
$5/hour for a shop bay? Oh man I wish I could get that!
That's just a small part of a "package deal." You might not like the whole package!!!
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  #10  
Old 05-08-2009, 08:54 PM
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Quote:
Originally Posted by toomany MBZ View Post
Where in Va?

Newport News
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87 300D Turbo 5spd
90 300TE
83 300SD
85 300TD
92 400E
85 190D

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  #11  
Old 05-08-2009, 08:58 PM
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Quote:
Originally Posted by tangofox007 View Post
The torque values for the differential mount sre:

Mount to frame: 30 Nm
Mount to differential cover: 120 Nm.

Thank you very much. So roughly 32 ft/lbs and 89 ft/lbs
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83 300SD
85 300TD
92 400E
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  #12  
Old 05-08-2009, 10:04 PM
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Quote:
Originally Posted by ashedd View Post
So roughly 32 ft/lbs and 89 ft/lbs
22 and 89.
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  #13  
Old 05-09-2009, 11:11 AM
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Quote:
Originally Posted by ashedd View Post
Newport News
I live in Hopewell, not that far away.
Here's a pic of a Nm to ft. lbs. table.
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Torque specification-img_1684.jpg  
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  #14  
Old 05-09-2009, 06:21 PM
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6.5 hours later and I have new front rotors, pads, rear diff mount, rear diff fluid. Not one fastener came off the front wheels as they should. I had to use an impact wrench for everything expect the 10 bolts that hold the rotors on. I had to use a vice and 2 foot breaker to free those up.

What a PITA

Thanks for all the info
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90 300TE
83 300SD
85 300TD
92 400E
85 190D

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