3G Double Headder Benutzerhandbuch - Seite 14

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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.

Figure I

Tabbed

Locking Washer

Cup

Lock Nut

Bearings

Threaded

Bearing Race

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.

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)

Bottom Bracket

Threaded

Bearing Race

Bicycle

Cup

Bearings

Frame

Left

Crank Arm

Spacer

Chainring

Threads

Right

Crank Arm