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headshrink · March 16th, 2012, 02:59 PM

One thing I think that hasn't been mentioned yet is when you are loosening or tightening the camshaft caps, you actually do NOT want to use a star (or crossing) pattern. Although this would normally be the way you would think you would do it, the numbered markings on the caps themselves override the standard general procedure. Failure to go in order of these numbers MAY damage the little dowel pins. Yeager also gets this wrong. Once you get the caps off, if you inspect how it was designed, you will see why, as the two sides don't mate at the same level/time, and a crossing pattern will actually bend the dowel pins that engage first (ask me how I know).

The service manual confirms this: "First tighten down the chain guide [A] and bearing caps
[B] evenly to seat the camshafts in place, then tighten all
bolts following the specified tightening sequence." Pg. 5-18

Another reference is in the General Information section: "Tightening Sequence
Generally, when installing a part with several bolts, nuts,
or screws, start them all in their holes and tighten them to
a snug fit. Then tighten them according to the specified sequence
to prevent case warpage or deformation which can
lead to malfunction. Conversely when loosening the bolts,
nuts, or screws, first loosen all of them by about a quarter
turn and then remove them. If the specified tightening
sequence is not indicated, [then (my edit)] tighten the fasteners alternating
diagonally." Pg. 1-4

March 16th, 2012, 02:59 PM	#195
headshrink ninjette.org certified postwhore Name: Bob Location: CA Join Date: Dec 2008 Motorcycle(s): '08 Ninja 250r, '14 CBR500r Posts: A lot.	One thing I think that hasn't been mentioned yet is when you are loosening or tightening the camshaft caps, you actually do NOT want to use a star (or crossing) pattern. Although this would normally be the way you would think you would do it, the numbered markings on the caps themselves override the standard general procedure. Failure to go in order of these numbers MAY damage the little dowel pins. Yeager also gets this wrong. Once you get the caps off, if you inspect how it was designed, you will see why, as the two sides don't mate at the same level/time, and a crossing pattern will actually bend the dowel pins that engage first (ask me how I know). The service manual confirms this: "First tighten down the chain guide [A] and bearing caps [B] evenly to seat the camshafts in place, then tighten all bolts following the specified tightening sequence." Pg. 5-18 Another reference is in the General Information section: "Tightening Sequence Generally, when installing a part with several bolts, nuts, or screws, start them all in their holes and tighten them to a snug fit. Then tighten them according to the specified sequence to prevent case warpage or deformation which can lead to malfunction. Conversely when loosening the bolts, nuts, or screws, first loosen all of them by about a quarter turn and then remove them. If the specified tightening sequence is not indicated, [then (my edit)] tighten the fasteners alternating diagonally." Pg. 1-4 __________________________________________________ Honda Interceptor VFR800 DLX (2014, 8th gen) Honda CBR500r (2014) - FOR SALE Kawi Ninja 250r (2008) - Restored and passed-down within family, only to be abandoned Last futzed with by headshrink; March 16th, 2012 at 06:24 PM.