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Motor Mounts Replacement

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Old 02-16-2010, 05:56 PM
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Motor Mounts Replacement

Ok, so I need to install my new motor mounts. I got 3 new OEM motor mount assemblies, and I'm going to put them in soon. I planned on replacing one mount at a time with the other 2 mounts supporting the engine. Is that possible, or do I need to support the engine with something while I replace every mount?
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Old 02-16-2010, 06:24 PM
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I just changed 3 of the 4 mounts. The 2 bottom mounts on the cross member and the transmission mount on the drivers side.

I put a jack under the oil pan with a block of wood just enough to hold the wood in place. Then I removed the crossmember and 2 bottom mounts. Replaced those and then moved to the transmission mount.

When I was finished I removed the jack and wood.
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Old 02-16-2010, 06:32 PM
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use the jack stand and wood method. when i did my front and rear mounts once i unbolted the mount the engine sank down really quick, kinda scary. i ran out and jacked it up right away. better safe than sorry. good luck!
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Old 02-16-2010, 06:38 PM
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Originally Posted by MrChuckFL
I just changed 3 of the 4 mounts. The 2 bottom mounts on the cross member and the transmission mount on the drivers side.

I put a jack under the oil pan with a block of wood just enough to hold the wood in place. Then I removed the crossmember and 2 bottom mounts. Replaced those and then moved to the transmission mount.

When I was finished I removed the jack and wood.
they say you're not supposd to jack under the oil pan... is there a safer place to put it?
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Old 02-16-2010, 06:39 PM
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Originally Posted by Maxima112
use the jack stand and wood method. when i did my front and rear mounts once i unbolted the mount the engine sank down really quick, kinda scary. i ran out and jacked it up right away. better safe than sorry. good luck!
yeah, when my mechanic was putting my headers in, he dropped the crossmember on a lift with nothing supporting the engine, and it was moving a whole lot! i was kinda scared, lol
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Old 02-16-2010, 07:00 PM
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Doesnt take much to support when removing the crossmember. I used a piece of 2x4 between the jack and the tranny casing to hold in place while replacing the crossmember mounts.

Once they are done, you can then do the tranny mount pretty easily without any support. Crossmember will hold engine in place. Then use same 2x4 under tranny to raise/lower engine until it matches up to tranny mount.
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Old 02-17-2010, 06:53 PM
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Originally Posted by nismopc
Doesnt take much to support when removing the crossmember. I used a piece of 2x4 between the jack and the tranny casing to hold in place while replacing the crossmember mounts.

Once they are done, you can then do the tranny mount pretty easily without any support. Crossmember will hold engine in place. Then use same 2x4 under tranny to raise/lower engine until it matches up to tranny mount.
how about the side engine mout.. can i do that with just the support of the crossmember, or should i support it still?
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Old 02-17-2010, 07:12 PM
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Originally Posted by wyche89
how about the side engine mout.. can i do that with just the support of the crossmember, or should i support it still?
Basically same as the tranny mount. I used a jack with a wooden block under the oil pan to raise the engine just enough to allow the main bolt slide in and out with ease.
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Old 02-18-2010, 05:04 PM
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i don't have my haynes manual on me, nor can i find this anywhere on the site.. does anybody know the torque specifications for all the bolts?
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Old 02-18-2010, 05:05 PM
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Originally Posted by Nelsito65
Basically same as the tranny mount. I used a jack with a wooden block under the oil pan to raise the engine just enough to allow the main bolt slide in and out with ease.
cool.. thanx
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Old 02-19-2010, 08:18 AM
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Putting a load on the Oil pan in ANY WAY is a VERY bad idea.

gr
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Old 02-19-2010, 12:22 PM
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Originally Posted by wyche89
i don't have my haynes manual on me, nor can i find this anywhere on the site.. does anybody know the torque specifications for all the bolts?
2003 Maxima FSM:

http://www.nicoclub.com/FSM/maxima/2003/

Al the torque specs you'l ever need. ;-)
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Old 02-19-2010, 03:11 PM
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what about when changing just the rear motor mount? any engine support needed?
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Old 02-19-2010, 03:36 PM
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Originally Posted by exodusx187
what about when changing just the rear motor mount? any engine support needed?
Originally Posted by nismopc
Doesnt take much to support when removing the crossmember. I used a piece of 2x4 between the jack and the tranny casing to hold in place while replacing the crossmember mounts.
Same procedure. You need to remove the crossmember to get the rear replaced.
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