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                          Phone: (508) 695-3717
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                 5/8 Clutch Bearing Upgrade

Installing your new 5/8 clutch bearing is no harder than replacing
the original bearing assembly. The order of parts on the shaft is
the same for both Currie and Lashout drives.

1) Use a 6mm Allen wrench to remove the three bolts holding the motor to the gear
housing of the drive system. Pull the motor straight out from the housing. Note the flat
spot on the motor shaft. When re-installing the motor, be sure this flat spot is aligned 
with the flat spot in the gear at the center of the drive. Remove the aluminum "gasket" 
from between the motor and housing. (see below)

NOTE: The aluminum "gasket" is ONLY required when installing the "silver can"
motor shown in the picture below. All other motors (BMC, MAC, Kollmorgen)
must be installed WITHOUT this "gasket".


                                      

2) Remove the four screws holding the planetary gear set in place. (below)

                                      

3) Lift out the planetary gear and set aside. (below)

                                      

4) Locate and remove retaining clip on the chain master link. Remove chain. (below)

        

5) Remove the splined shaft, sprocket, and all spacers from the housing. Install the
    new 5/8" drive unit with shaft, sprocket, and spacers as shown in the diagram
    below.
                       
NOTE:
Your 5/8" kit parts have been pre-lubricated with "Tri-Flow Synthetic
Grease with Teflon." You can buy this product at any decent bike shop. Do NOT
use oil on any of the internal parts of the drive! Do NOT flush out the housing with
solvents once assembled!

 6) Be sure the splined (grooved) end of the shaft, Nylon spacer, sprocket, and steel
spacer are in the exact order shown above! NOTE that the pinion sprocket "teeth" are 
positioned away from the splined portion of the shaft.

                                                                      

7) Insert the new pinion sprocket assembly back into the housing making sure the steel 
spacer remains on the drive shaft! (it can fall of and lodge under the pinion if you're
 not careful)

                                       

8) Do NOT install the chain yet, since it will installed last. Re-assemble the rest of the 
drive unit in the same order it was disassembled. 

9) Install the chain.

HINT: The chain can be fed through the opening on the side of the drive assembly 
AFTER the drive unit is fully assembled. Feed one end of the chain into the opening 
adjacent to the pinion gear. By turning the gear with your finger, the chain will be dragged
around the sprocket and exit the housing. 

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