Bontrager 283415 manual Troubleshooting, Problem Cause? Solution

Troubleshooting

Problem	Cause?	Solution
Assembly	• Bottom bracket	Face the bottom bracket shell
too tight	shell too wide	to remove all paint and
	• Bottom bracket	square the surface.
	shell not faced	Make sure the bottom bracket
	• Bottom bracket	shell is within tolerance (see
	shell threads mis-	page 6).
	aligned	If shell is faced and tolerance
	• “Stack” of parts is	is correct, remove the 1.0
	wrong	mm spacer and reassemble.
		If this does not correct the
		problem, change the stock
		elastomer washer on the left
		side to the thinner, 2.5 mm
		(available as an accessory-
		see your dealer).
		If this assembly is loose, switch back
		to the standard 3.5 mm elastomer.
Assembly	• Bottom bracket	Face the bottom bracket shell
too loose	shell is too narrow	to remove all paint and
	• Bottom bracket	square the surface.
	shell not faced	Make sure the bottom bracket
	• Bottom bracket	shell is within tolerance (see
	shell threads mis-	page 6).
	aligned	If shell is faced and tolerance
	• “Stack” of parts is	is correct, add an additional
	wrong	1.0 mm spacer (available
		as an accessory- see your
		dealer) to the left side and
		reassemble.
		If this assembly is too tight, change
		the stock 3.5 mm elastomer to a
		2.5 mm elastomer, available as an
		accessory- see your dealer.
Chain-line	• Incorrect bottom	If the chain-line is incorrect,
incorrect	bracket shell align-	shifting performance may be
	ment	impaired. The 1.0 mm spacers
	• Incorrect chain-	can be moved from side-to-
	rings	side or removed as necessary,
	• Incorrect spacers	as long as correct bearing
		adjustment is achieved. The
	on axle
		spacer arrangement used in
		this manual should result in a
		chain-line of 43.5 mm.

Troubleshooting