Softail Models Standard, Custom, Night Train, Deuce, Springer, Heritage, Fatboy, Deluxe, Rocker and Cross Bones.
Sponsored by:
Sponsored by:

Changing Trans Fluid - What size is drain plug?

Thread Tools
 
Search this Thread
 
Old Oct 29, 2012 | 08:09 AM
  #1  
SouthpawHD's Avatar
SouthpawHD
Thread Starter
|
Extreme HDF Member
Joined: Jun 2010
Posts: 12,359
Likes: 74
From: WI
Default Changing Trans Fluid - What size is drain plug?

I went to change my trans fluid over the weekend (time to put her to bed for a long winter's nap), what size is the drain plug? I was able to remove it using an allen, but it didn't seem to fit quite right.

The oil and primary plugs are standard bolts, but this plug has no head on it, just a slot/opening in the end.

It's for a 2010 Fatty.

Thanks.
 
Reply
Old Oct 29, 2012 | 08:29 AM
  #2  
spydyr's Avatar
spydyr
Road Captain
Joined: Mar 2010
Posts: 705
Likes: 8
From: southern IL
Default

Mine has a hex socket, 5/8" just like the other 2.

it's an 09 but should be the same, I would think.
 
Reply
Old Oct 29, 2012 | 10:29 AM
  #3  
SouthpawHD's Avatar
SouthpawHD
Thread Starter
|
Extreme HDF Member
Joined: Jun 2010
Posts: 12,359
Likes: 74
From: WI
Default

Originally Posted by spydyr
Mine has a hex socket, 5/8" just like the other 2.

it's an 09 but should be the same, I would think.
No, mine has no head on it, just a slot in it. And it has no gasket on it. Very strange. That's why this is so puzzling.
 
Reply
Old Oct 29, 2012 | 11:58 AM
  #4  
redmosquito1's Avatar
redmosquito1
Tourer
Joined: May 2012
Posts: 453
Likes: 0
From: Clarkston
Default

My. 2012 deluxe has a hex head on it. Are you sure you pulled the right plug?
 
Reply
Old Oct 29, 2012 | 01:07 PM
  #5  
SouthpawHD's Avatar
SouthpawHD
Thread Starter
|
Extreme HDF Member
Joined: Jun 2010
Posts: 12,359
Likes: 74
From: WI
Default

Originally Posted by redmosquito1
My. 2012 deluxe has a hex head on it. Are you sure you pulled the right plug?
Yep. Oil came out and trans dipstick showed no oil.
 
Reply
Old Oct 29, 2012 | 02:22 PM
  #6  
oct1949's Avatar
oct1949
Club Member
15 Year Member
Liked
Loved
Joined: May 2007
Posts: 145,895
Likes: 821
From: 40 miles Northeast of Indy..
Default

The tranny plug U pulled,, its the one between the shocks, right,, or,,????


this link shows u how to do it.

http://www.dudeworld.com.au/HOWTO.GEARBOX.HTML




.
 
Reply
Old Oct 29, 2012 | 03:04 PM
  #7  
SouthpawHD's Avatar
SouthpawHD
Thread Starter
|
Extreme HDF Member
Joined: Jun 2010
Posts: 12,359
Likes: 74
From: WI
Default

No. The diagram from the manual looks like this. It is in front of the trans and the shocks (by about 6-8 inches).
 
Attached Thumbnails Changing Trans Fluid - What size is drain plug?-trans-pic.jpg  
Reply
Old Oct 29, 2012 | 03:45 PM
  #8  
spydyr's Avatar
spydyr
Road Captain
Joined: Mar 2010
Posts: 705
Likes: 8
From: southern IL
Default

Originally Posted by HD Street Bob
No. The diagram from the manual looks like this. It is in front of the trans and the shocks (by about 6-8 inches).
Ok, I'm officially confused. The diagram you showed IS the transmission plug, but it is located in between the rear shocks and has a hex head. Just draw some shocks around the diagram you have and that's it.

The only plug 6-8 inches in front of the shocks is an allen hex plug on the right side of the engine, and should not be removed.
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

 Verdad Gallardo
story-1

6 Weirdest Harley-Davidsons Ever Sold to the Public

 Verdad Gallardo
story-2

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-3

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-4

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-5

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-6

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-7

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-8

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-9

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
Old Oct 29, 2012 | 03:46 PM
  #9  
SouthpawHD's Avatar
SouthpawHD
Thread Starter
|
Extreme HDF Member
Joined: Jun 2010
Posts: 12,359
Likes: 74
From: WI
Default

M'en F'er! I've searching the web, and I think I pulled the sump plug! Now what? Did I ruin something by pulling the sump plug?

How come the damn manual didn't just label the shocks and so forth in that diagram?

I'm so confused now, because the tranny oil dipstick was clean when I pulled that (sump) plug and drained the oil - I double checked because I thought that was an odd plug and an odd location.

This sucks!
 
Reply
Old Oct 29, 2012 | 04:27 PM
  #10  
spydyr's Avatar
spydyr
Road Captain
Joined: Mar 2010
Posts: 705
Likes: 8
From: southern IL
Default

That sux. I think there's a thread somewhere of someone suggesting plumbers white glue on that plug. It's tapered from what I've read so be careful torquing on it.
 
Reply



All times are GMT -5. The time now is 08:59 PM.

story-0
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.

By Verdad Gallardo | 2026-06-03 18:28:05


VIEW MORE
story-1
6 Weirdest Harley-Davidsons Ever Sold to the Public

Slideshow: From military-inspired singles to scooters and three-wheel utility vehicles, these Harleys took the company far outside its comfort zone.

By Verdad Gallardo | 2026-06-02 18:34:10


VIEW MORE
story-2
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-3
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-4
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-5
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-6
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-7
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-8
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-9
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE