Parts Replacement; Bottom Bracket - Star Trac Spinner NXT 7000 Service Manual

Parts Replacement

Bottom bracket

1. Cranks must be removed from the spindle to service the bottom
bracket bearings.
2. Remove the cranks arm bolts using the 14 MM socket
3. Remove the crank arms using a crank removal tool CCP-2
4. Remove the 29MM nut from the right side of the bottom bracket
5. Using a rubber coated mallet carefully knock out the bearing by
hitting the bottom bracket spindle on the right side. It will take
some force to release the bearings from the frame, follow safe
working practices.
6. Note: If you will be using the spindle again, take care not to
damage it.
7. Once the bearing and spindle are out of one side of the frame use
a punch and mallet to remove the bearing and nut off the spindle
and use the spindle to knock out the remaining bearing. Discard
the bearings, they re not reusable and if the spindle is damaged
discard it.
8. Clean the inside of the bearing housing and remove any
remaining Loctite.
9. Apply some Green # 680 Loctite to the new bearing and align it
with the frame and using the rubber coated mallet, tap the bearing
into the frame. NOTE do not hit the inner race of the bearing.
10. Insert the bottom bracket spindle into the bearing from the other
side of the frame.
11. Apply some Green # 680 Loctite to the second bearing and install
it into the frame and onto the spindle.
12. Apply some Loctite #242 and attach the nuts to the spindle and
using two 29MM open end wrenches tighten the nuts to press the
bearing into the housing.
13. Tighten the nuts until the bearings are both firmly seated into the
housing then back off both nuts just until there is smooth rotation
of the bottom bracket spindle. Test the nuts to make sure they are
at 10 foot pounds.
14. Check for side to side play or looseness before re-installing the
cranks and chain guard.
15. Remember to torque the crank arm bolts to 30 foot pounds.
16. Check the pedals for looseness and tighten if needed,
17. Observe proper safety precautions while testing the bike for
proper smoothness while pedaling.
Star Trac Product Support
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