ParkTool AWS-10 FOLD-UP HEX WRENCH SET

฿300.00

The Park Tool Fold-Up Hex Wrench Set combines all the popular hex wrench sizes into one convenient fold-up tool, eliminating the need for a mess of loose tools. Its multi-position composite handle is comfortable, lightweight, slip-resistant, and 40% stronger than steel handles.

2 in stock

Description

Description

BOTTOM BRACKET ADJUSTMENT USING PRELOAD RING

This article will discuss how to adjust bottom bracket bearing preload on systems using preload rings.

1

PRELIMINARY INFO

WHAT TOOLS DO I NEED?

“Thru-spindle” bottom bracket bearing systems pass a spindle through both left and right bearings. The thru-spindles will move back and forth in the bearings and need to be secured to avoid side-to-side play. One design to eliminate movement is a preload ring built into the left crank arm that allows a precise setting of bearing preload.

Crank Pre Load Ring Lr Play

LEFT-TO-RIGHT MOVEMENT OF ARMS THROUGH BEARINGS WITHOUT PRELOAD

2

ADJUSTMENT

Inspect the left arm for a threaded ring. Loosen any pinch screw or setscrew and turn the ring against the crank. This can be done with the arm on or off the bike.

If the arm was off the bike, install the arm and tighten fully.

Crank Pre Load Ring Loosen Ring

LOOSEN ANY RING PINCH BOLT

Crank Pre Load Ring Pre Set Ring

TIGHTEN RING AGAINST ARM

Turn the ring away from the arm toward the bottom bracket until it gently snugs against the bearing.

Crank Pre Load Ring Turn Ring1

SNUG THE PRELOAD RING AGAINST THE BEARING

Secure any pinch bolt in the ring. Only use enough torque to keep the ring from turning.

Crank Pre Load Ring Tighten Ring1

TIGHTEN ANY PINCH BOLT ON THE RING

Some manufactures use a friction system in the ring, and do not use a pinch bolt. Simply leave the ring alone after correctly adjusting it against the bearing.

Crank Pre Load Ring Xtr

SHIMANO® PRELOAD RING WITHOUT PINCH BOLT

The preload is adjusted. As a test, push arms left to right along the axis of the spindle testing for side-to-side movement. If movement is present, turn preload ring slightly toward the bottom bracket bearing and test again.

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