How to replace Motor and transmission mount
 

I just got a e53, with a 110k mile on it. It's probably overkill, but I would like to change the motor mounts and transmission mounts..

Can anyone help me find good DIY directions. I'm unable to find anything.

Sorry If I forgot to mention, I have a 2001 X5, 3.0L v6, automatic transmission.

Xmen5, I can't help you on this, but you should identify your year, engine and tranny for specific help. For example, I expect my manual transmission 2006 3.0L's mounts are quite different than those for an auto tranny V-8. Good luck with your search!

The transmission is actually supported by a single mount for the transfercase. It's a little involved to replace. You need to remove the transfercase cross member which will require you to disconnect the front half of the exhaust. From there you can use a special bushing press (you can rent this online from tool places that rent out specific bmw tools) out the old and in the new.

Do you know of any step by step post or video?

Hmmm. If you have to remove the font drive shaft, I wonder if it makes sense to also repack it with grease to delay the inevitable transfer case spline weakness.

Any trasfercase diy will get you half way there.

You do not need to remove the front driveshaft to replace the tcase bushing.

TRANSMISSION SUSPENSION (AUTO.)
22 32 001 REPLACING RUBBER MOUNT FOR TRANSMISSION MOUNTING
Special Tools Required:
 22 1 011
 22 1 012
 22 1 013
NOTE: For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .
NOTE: For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .
2002 BMW X5 30i
2001-2003 ENGINE Engine & Transmission Mounts - Repair Instructions - X5 (3.0i) M54
 22 1 016
 33 3 144
Remove cross-member for transmission mounting, refer to 22 32 050 REPLACING CROSS-MEMBER FOR
TRANSMISSION MOUNTING .
Position special tool 22 1 016 on opening (2) and twist in screw (3) hand-tight against housing.
Pull out rubber mount with special tools 22 1 011/33 3 144 and nut (1).
Nut (1) = nut M12x1.5 of rubber mount screw M12x1.5x220.
Fig. 1: Removing Rubber Mount With Special Tools
Courtesy of BMW OF NORTH AMERICA, INC.
Installation:
2002 BMW X5 30i
2001-2003 ENGINE Engine & Transmission Mounts - Repair Instructions - X5 (3.0i) M54
Arrow on rubber mount must point to arrow on housing.
Coat housing bore and rubber mount with Circolight.
Fig. 2: Identifying Arrow Mark On Housing And Rubber Mount
Courtesy of BMW OF NORTH AMERICA, INC.
Insert special tool 22 1 012 with pin into openings in rubber mount.
2002 BMW X5 30i
2001-2003 ENGINE Engine & Transmission Mounts - Repair Instructions - X5 (3.0i) M54
Fig. 3: Inserting Special Tool With Pin Into Openings In Rubber Mount
Courtesy of BMW OF NORTH AMERICA, INC.
Pull in rubber mount with special tools 22 1 012/22 1 012/22 1 013 and 33 3 144.
From rubber mount screw M12x1.5x220, use nut (1) M12x1.5.
2002 BMW X5 30i
2001-2003 ENGINE Engine & Transmission Mounts - Repair Instructions - X5 (3.0i) M54
Fig. 4: Removing Rubber Mount With Special Tools
Courtesy of BMW OF NORTH AMERICA, INC.
22 32 050 REPLACING CROSS-MEMBER FOR TRANSMISSION MOUNTING
Remove exhaust system. Refer to 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST
SYSTEM (M62, M54) .
Remove heat shield at front left and right.
Support transmission with hydraulic lifter.
Release nut (1) and remove screw.
Unscrew left and right bolts.
Remove cross-member.
2002 BMW X5 30i
2001-2003 ENGINE Engine & Transmission Mounts - Repair Instructions - X5 (3.0i) M54
Fig. 5: Removing Transmission Mounting Cross-Member
Courtesy of BMW OF NORTH AMERICA, INC.