ECS Tuning BMW S54 - Page 70

ECS TUNING 1000 SEVILLE RD. WADSWORTH, OH 44281 1.800.924.5172 WWW.ECSTUNING.COM
70
BMW S54 DUAL VANOS REBUILD
®
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Step 15: Torque Wrench, Gear Cap Socket
Once you have achieved no axial play and have sufficient preload on the
transfer gear bearing, remove the gear cap, apply high strength (red)
threadlocker, then reinstall the cap for the final time, torquing it to 55 Nm
(40.5 Ft-Lbs).
Do not install the transfer gears back into the vanos hubs. Set them aside
for now as you complete sections 4B and 4C. Installation will be covered
in section 5.
Step 14: 400 Grit Sandpaper
To loosen the bearing (when excessive force is required to rotate the shaft)
- sand both of the end washers using the following procedure:
1. Place a sheet of 400 grit sandpaper on a solid, flat surface.
2. Using medium pressure, sand one surface of the washer back and
forth 6-8”, approximately 30-40 times.
3. Rotate the washer 90 degrees, and repeat the sanding procedure.
4. Flip the washer over and repeat the sanding procedure.
5. Rotate the washer 90 degrees and repeat the sanding procedure.
Thoroughly clean the end washers and continue with
Step 11 on Page 68.
This procedure will remove a very small amount of material, approximately
.0025mm from the total thickness of each washer.
- End of Section 4a -
SECTION 4A: VANOS TRANSFER GEAR SERVICE