3G Axel, Owner'S Manual

Lock Nut

Bearings

Cup

Cup

Bearings

Chainring

Left

Crank Arm

Threads

Right 

Crank Arm

Figure I

Bicycle 

Frame

Spacer

Threaded 

Bearing Race

Threaded 

Bearing Race

Tabbed

Locking Washer

Although the bottom bracket comes pre-installed on all our bicycles it is 

good to know how the general assembly of these components is in case 

of encountering problems (see figure I). Below is a diagram showcasing a 

one piece crank set, the parts involved will be slightly different on a three 

piece set.

Installing Bottom Bracket

1. Feed left crank arm into hole in center of chainring.

2. Follow this with the plastic spacer and then the threaded race. 

3. Grease the race and bearings, and feed the bearing onto the crank with 

balls facing in

4. Grease cups. Insert left crank arm through right side of bike. 

5. Grease next set of bearings and feed them to the left arm facing inward.

6. Feed the second threaded race (flat side facing out).

7. Finish with the washer and a lock nut. Make sure whole assembly is 

tight but able to spin freely.

Bottom Bracket

NOTE - The cups are the first parts to be installed into the 

frame. The threaded races thread onto the threads indicated 

on the crank itself. All pieces fit on via left crank arm (thinner 

arm)