Bontrager 231793 Front hubs- Cartridge bearing, threaded alloy axle

2003 Bontrager Service Manual

Recommended tools

17mm cone wrench (2)

Hammer and broad punch

Bearing press

DISASSEMBLY

Hub parts and names are referenced on next page.

Remove the axle

1. Remove one of the thread-

ed axle end caps (Fig. 2H) by

loosening with the pair of 17mm

cone wrenches.

2. With one end cap

removed, drive the axle from

the hub shell with a soft-faced

hammer.

3. Place a broad punch

through the hub, and tap the

punch with a hammer to drive

the second bearing (Fig. 3H),

with its seal, from the hub.

4. If needed, remove the

second bearing from the axle. To do this, clamp the

middle of the axle, loosen the end cap, and remove it.

Support the bearing and tap the axle out with a soft-

faced hammer.

Clean and inspect the parts

1. Wipe old grease or debris from the hub bearing

seats.

2. Normally, bearings are not re-used. If you are re-

installing an old bearing, wipe off any grease or debris

from both the inner and outer surfaces.

Do not use solvent on the bearing, as the solvent will

contaminate the grease. This may cause bearing failure.

Lubricate bearings and threads

1. Lubricate the threads on the axle with Wrench

Force™ synthetic grease, or a similar product.

2. Lightly grease the inner and outer surfaces of

each bearing.

ASSEMBLY

1. Press a new bearing onto

the axle with a bearing press.

Note: the black seal faces out (Fig. 4H).

2. Place the hub seal onto the

axle, and thread on the axle end

cap. Clamp the middle of the axle

and tighten the axle end cap with

the 17mm cone wrench.

3. Press the bearing, with the

axle attached, into the hub.

4. Press the second bearing into the hub.

Note: the black seal faces out (Fig. 4H).

5. Place the hub seal over the bearing, and press into

the hub shell.

6. Thread on the second axle end cap, and tighten with

the 17mm cone wrench.

Do not over-tighten the axle nut. The axle should turn freely with no lateral play in the hub shell.

Fig. 1H

Fig. 3H

Front hubs- Cartridge bearing, threaded alloy axle

2002/2003 Bontrager Race Lite Road front wheels

Fig. 2H

Fig. 4H

Needs photos and text