how to drop sub-frame
01-25-02, 06:17 PM
#1
Swingline Stapler
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how to drop sub-frame
im going to be putting in my differential mount tomorrow morning, and im just wondering how to drop the sub-frame. what step should i do first? can someone give me a detailed setup of what to do?
01-25-02, 08:15 PM
#3
HAILERS
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First step: Download the factory manual at http://www.iluvmyrx7.com/Technical_I...ice_manual.htm
I suppose the first step is to remove the y pipe of the muffler. You can replace the mount without removing the subframe though. Also do not really have to remove the ypipe. The manual shows how to replace the mount step by step. Its a free download.
Oh heck: Jack up the rear and put jack stands ahead of the subframe mounts.
Remove the left rear wheel.
Remove the lower bolt out of the subframe link.
Lossen almost all the way the rear differential mounts(two).
Take the nut off the left subframe mount.
Now is a good time to place the floor jack under the subframe before we forget.
Remove the two rear differential mount nuts.
Loosen the right subframe mount nut almost all the way off.
Take off the two nuts that attach the mount to the differential.
Lower the left side of the subframe just enough to have access to the two nuts that hold the mount to the subframe. Dont drop it down too far.
Nuts off you should be able to shove up on the broken mount and remove it.
Put the new mount on in the reverse of the above steps.
Thats it to the best of my memory. Ist time I did it it was difficult. The second time was a bear. Godzilla had put the two outboard nuts on and I broke a half inch drive universal on it and lost my temper once or twice. I don't take the driveshaft loose. Come to think of it I did not take the y pipe off either.
I suppose the first step is to remove the y pipe of the muffler. You can replace the mount without removing the subframe though. Also do not really have to remove the ypipe. The manual shows how to replace the mount step by step. Its a free download.
Oh heck: Jack up the rear and put jack stands ahead of the subframe mounts.
Remove the left rear wheel.
Remove the lower bolt out of the subframe link.
Lossen almost all the way the rear differential mounts(two).
Take the nut off the left subframe mount.
Now is a good time to place the floor jack under the subframe before we forget.
Remove the two rear differential mount nuts.
Loosen the right subframe mount nut almost all the way off.
Take off the two nuts that attach the mount to the differential.
Lower the left side of the subframe just enough to have access to the two nuts that hold the mount to the subframe. Dont drop it down too far.
Nuts off you should be able to shove up on the broken mount and remove it.
Put the new mount on in the reverse of the above steps.
Thats it to the best of my memory. Ist time I did it it was difficult. The second time was a bear. Godzilla had put the two outboard nuts on and I broke a half inch drive universal on it and lost my temper once or twice. I don't take the driveshaft loose. Come to think of it I did not take the y pipe off either.
Last edited by HAILERS; 01-25-02 at 08:18 PM.
01-25-02, 08:20 PM
#4
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Ugh, what a job.
This is what I wrote in a previous thread:
https://www.rx7club.com/forum/showth...threadid=39026
I just got finished doing this.
It is an absolute, full blown pain in the ***.
This is what I had to do:
Take the y-pipe off ( it gets in the way of the dropped subframe).
Detach the propeller shaft from the differential.
Detach the sublink from the subframe.
You must drop the subframe in order to wiggle the old mount off and the new one on, so dropping that down a bit now will make it easier to get the mount nuts off.
I soaked the mount nuts in PB blaster (penetrant) and heated up each nut with a torch before removing.
King Kong wasn't around to help me wrench each nut off, so I positioned the wench so that I could use a floor jack apply pressure to the wrench.
I removed the subframe mount nuts (the 2 with the washer) by using a long wobble bar. These two weren't as bad as the other three.
One everything is loose, push the front of the diff up until you have enough clearance to get the mount off. If I remember correctly, the subframe had to be dropped about 5".
Good luck.
Lars
This is what I wrote in a previous thread:
https://www.rx7club.com/forum/showth...threadid=39026
I just got finished doing this.
It is an absolute, full blown pain in the ***.
This is what I had to do:
Take the y-pipe off ( it gets in the way of the dropped subframe).
Detach the propeller shaft from the differential.
Detach the sublink from the subframe.
You must drop the subframe in order to wiggle the old mount off and the new one on, so dropping that down a bit now will make it easier to get the mount nuts off.
I soaked the mount nuts in PB blaster (penetrant) and heated up each nut with a torch before removing.
King Kong wasn't around to help me wrench each nut off, so I positioned the wench so that I could use a floor jack apply pressure to the wrench.
I removed the subframe mount nuts (the 2 with the washer) by using a long wobble bar. These two weren't as bad as the other three.
One everything is loose, push the front of the diff up until you have enough clearance to get the mount off. If I remember correctly, the subframe had to be dropped about 5".
Good luck.
Lars
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