Question about Harley Davidson FLHTCUI Electra Glide Ultra Classic Motorcycles

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How to stop the transmission noise in 5th gear on a 2007 HD Ultra Classic?

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  • Harley Davidson Master
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The 5th gear noise with the 6 speed is legendary!

1st and 5th are straight cut gears. 2nd,3rd,4th, and 6th are helical cut gears. Straight cut are stronger so Harley put them in the most popular gears.

Some people swear that either Mobil Syn 75/90 or Redline Shockproof 85/140 helps.

Baker transmissions make a F6F kit that has a helical cut gear, and a thicker trapdoor to handle the increased side loading because of it, but it ain't cheap!

Posted on Oct 22, 2013

Testimonial: "Thank you, My guess is to leave it alone and try the Mobil 75/90."

  • Dan Hogsed
    Dan Hogsed Oct 25, 2013

    Changed Tranny fluid to Mobil 75/90 really made a BIG difference.Thank you!!

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should be on the front left of the oil pan.
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RPM's a little high in 5th gear on a 2001 Harley Davidson Ultra Classic


Do you made any change on rear sprocket or front drive sprocket recently?

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How many quarts of oil for 2003 harleydavidson ultra


Hi Anonymous, oil capacities on touring models:
1. Engine oil 4 qts. with filter Hd Multi Grade 20w50.
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1 Answer

95 harley ultra classic stuck in gear. Was


There's only two things that could possibly make contact with the top cover and cause any problem. One is the shifter pawl and the other is neutral switch.

The shifter pawl return springs are notorious for breaking in the five speed transmissions. I've replaced a load of them. Take your foot shifter pedal and lift up on it until the transmisson just tries to shift. Then go back to the center position and press the lever down until the transmission just tries to shift. Does the spring pressure feel the about the same in both directions. If not, the shifter pawl return spring is broken.

With the top off, you can inspect the small spring on the sfifter pawl itself. See if that spring is broken. This is about the only thing that I know of in a five speed that will cause shifting problems. But then, I never claimed to know it all.

Good Luck
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My 2008 road king has an annoying whine when I ride in fifth gear.


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Wow, valves and other related engine noises don't care what gear you are in, they still make the noise. However your motor may be "lugging" in 5th gear which can cause a symptom of an engine related issue.
You may have an issue with the actual gearbox its self.
There is a primary drive chain that may be worn which will cause excessive noise in top gear because it is putting the greatest load on the engine. This is what connects the engine to the transmission. I think there is a tensioner for your model that will allow you to adjust the free play in the primary drive chain. If not I strongly recommend replacement because this will cause major damage if it breaks.

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