Question about 2008 Harley Davidson FLHR Road king

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2008 road king classic leaks engine oil into my primary case?

Engine oil into primary

Posted by Anonymous on

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Hi Anonymous, first check your engine breathing system to make sure it isn't block or restricted causing the crankcase to pressurize. If ok replace engine case main seal. Good luck

Posted on May 01, 2015

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Posted on Jan 02, 2017

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SOURCE: oil change on 05 road king

I typed out a Real Long dissertation of how to do this step by step, and all of my tricks. Forgot what the primary oil amount is to refill, don't have access to my manuals. (Gloomy day for an old biker)

Went to find this info, and there's an old Harley mechanic, (Kinda' looks like me!), that has a step by step Video of how to do an oil change on a Road King!

Here it is,

Posted on Apr 25, 2009

  • 221 Answers

SOURCE: seeking drain plug location on 1999 classic road

the engine oil drain plug is on the right side almost in line with the end of the back cyclinder just under the exhaust make sure that it is the front plug (oil) not tranny

Posted on Jul 20, 2009

  • 1124 Answers

SOURCE: Oil consumption on a 2008 Road King Classic with the 103 Big Bore

That is allot of oil for it not to be burning blue smoke out the exsaust or leaking..

The bike should be level front to back and side to side when checking it..

Posted on Sep 24, 2009

  • 4565 Answers

SOURCE: Chatter noise from primary drive case when

Sounds like you need to clean the clutch plates. This is rather unusual on the newer bikes but quite common on the older Shovelhead bikes. Make sure you're using the correct lubricant at the right level in your primary.

The clutch disc can get a glaze on them. We disassemble the clutch and wash the fiber plates with gasoline. Yes, I know gasoline is dangerous to use as a cleaning solvent due to it's flammability. Just be careful as it is the cheapest solvent that will cut the glaze. Mineral Spirits or diesel fuel won't work. Make sure you notice how the clutch plates are postitioned in the clutch basket. The middle plate is usually a spring plate. Once cleaned, lay a piece of fine emory cloth on a flat surface and sand both sides of the fiber disc using a figure 8 motion. Not much, just enough to knock the remaining glaze off the disc.

Now, put the clutch back together and adjust it properly as improper adjustment is probably what caused this to begin with. Back off on the adjustment on the clutch cable. Make it as short as possible. Now, in the center of the clutch pack there is a screw with a locknut on it. Break the locknut loose. Adjust the screw inwards until you feel a resistance. Then, back the screw back out 1/2 to 1 full turn. Lock the lock nut back down. Now, adjust your clutch cable so that you've got about 1/8 inch freeplay at the clutch lever. While you're in the primary, check the adjustment of the primary chain if your bike is equipped with the manual adjuster. Good Luck.

Posted on Nov 11, 2009

  • 22 Answers

SOURCE: how to replace starter javk seal on 2002 road king

You have to pull the inner primary off.

Posted on Mar 03, 2010

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Related Questions:

1 Answer

Is it possible for the transmission fluid in my 2005 Road King to leak into the crank case oil pan?

if there is a faulty seal on the crankshaft then the gear oil can get to the crankcase
being a separate case with separate oil, check that the breather for the transmission is not blocked and the pressure build up is not forcing the oil past the seal into the crankcase

Mar 21, 2016 | 2005 Harley Davidson FLHRCI Road King...

1 Answer

Where is the oil drain plug for 2002 road king

There are three oils. You do not say which one.

Dyna engine oil is on the left side bottom of the oil pan near where the jiffy stand rests when up and straight in from the side. The primary is under the middle of the primary case on the left side facing the ground and the transmission is under the right side of the oil sump case about mid way from front to back. All are 1/4 inch ALLEN socket heads inside 5/8 inch hex plugs. All use an o-ring and thread sealant.

Softail is the same except the engine oil drain is on the right side at the rear of the frame down tube near the swing arm attachment point and faces the ground.

Touring is the same except that the engine oil drain plug is on the left hand side front of the oil pan facing the front.

Sportster engine oil drain is on a rubber tube hanging down under the frame near where the jiffy stand rests when in its up position and the transmission and the primary use the same drain plug and are the same oil. The engine oil plug is a 5/16 inch plastic plug held in place with a mini worm screw clamp with a plain screwdriver or ¼ inch hex worm drive fitting.

Sep 28, 2012 | 2002 Harley Davidson FLHRCI Road King...

1 Answer


I don't understand this.
I have a 2008 FLHRC Road King Classic, and the oil fill SCREWS on, not pushes on!

A screw on cap wouldn't blow off.

Aug 01, 2012 | 2008 Harley Davidson FLHRC Road King...

1 Answer

What size star wrench to use when changing the transmission fluid on a 2008 Road King

I have a 2008 Road King Classic (FLHRC) and on mine, both the oil drain and transmission drain is a hex head bolt, 5/8" I seem to recall.

Jun 08, 2012 | 2008 Harley Davidson FLHRC Road King...

1 Answer

2008 road king classic I have a tick sound on left side?

Does it sound like a chain noise, coming from the primary case?

In 2007, Harley changed the primary chain tension adjuster to an "automatic", spring loaded one, that doesn't work very well.

You can bolt in an older manual adjuster, BUT the area that USED to be an inspection/access cover on the outer primary cover is now a solid area, so you'd have to remove the outer primary cover everytime you adjust the primary chain.

There are some aftermarket "automatic" adjusters out on the market.

May 18, 2012 | 2008 Harley Davidson FLHRC Road King...

1 Answer


Bummer on the oil leak. Typically the oil is not from the crankcase, but from some connection, somewhere and leaking down to the bottom of the crank case. Pressure wash completely, run the bike and inspect carefully. Much more common issue is a primary to crankcase seal.

Jul 14, 2011 | 2002 Harley Davidson FLHR - FLHRCI Road...

1 Answer

Can I use the same oil in the engine transmission and the final drive on my 03 road king?

Your bike came with H-D Syn3, 20W50 weight oil, in the engine, transmission, and the primary from the factory.

Good Luck

Apr 02, 2011 | 2008 Harley Davidson FLHRC Road King...

1 Answer

Oil consumption on a 2008 Road King Classic with the 103 Big Bore

That is allot of oil for it not to be burning blue smoke out the exsaust or leaking..

The bike should be level front to back and side to side when checking it..

Sep 24, 2009 | 2008 Harley Davidson FLHR Road king

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