Milwaukee Eight (M8) 2017 and up M8 Air and Liquid Cooled discussion
Sponsored by:
Sponsored by:

2019 RGS - Transmission to Primary Transfer

Thread Tools
 
Search this Thread
 
Old Apr 24, 2019 | 07:25 PM
  #1  
FIT4DUTY's Avatar
FIT4DUTY
Thread Starter
|
Intermediate
Joined: Sep 2007
Posts: 46
Likes: 21
From: Goodyear, AZ
Default 2019 RGS - Transmission to Primary Transfer

I bought my 2019 RGS in October 2018. I was aware of the possible transfer issue, so checked the transmission often during the first 1000 miles. Added quite a bit and it kept getting lower. So between the 1000 mile and 5000 mile service, I just let it do what it was going to do. The amount transferred was just enough to barely touch the bottom of the stick. Hoped maybe my transfer issue had stopped.

Earlier this month I was preparing for a 6000 mile ride from Phoenix, AZ to San Diego, CA to Charlotte, NC and back to Phoenix, AZ. Changed the fluids. To not waste a few ounces of oils, I re-filled the primary and transmission with a full quart each. Then took off on my ride. I checked the transmission fluid at about the 3000 mile mark, it wasn't reading on the stick at all. So I used the arm on my reading glasses. Stuck the whole arm down and the fluid went about 1/2" on to the arm. Quite a bit had transferred.

Anyway, when I returned home I ordered a clutch rod from Macomb County Choppers. I received the rod a couple days ago so...

Since I knew there had been quite a bit of transfer, I decided to change the fluids and install the rod today. I measured how much fluid I drained from the Transmission and Primary.
  • Transmission - 8 oz
  • Primary - 56 oz
Right now I have 12,000 miles on the bike. I again refilled the primary and transmission with 1 quart each. I ride my bike to work as well as take it out on most weekends. The minimum miles I put on each week is 250. This weekend the wife and I are going on a ride so will put on an additional 500.

I will add to this post, the mileage I have covered since this service and report if the transmission is holding steady or not.
 
Reply
Old Apr 24, 2019 | 08:51 PM
  #2  
RK14SGS's Avatar
RK14SGS
Road Warrior
Joined: Jul 2009
Posts: 1,579
Likes: 144
From: SC
Default

Keep us posted
 
Reply
Old Apr 24, 2019 | 11:03 PM
  #3  
steveg56's Avatar
steveg56
Road Captain
Joined: Sep 2005
Posts: 555
Likes: 75
From: California
Default

This bites. I'm so done crossing my fingers that I won't sump or transfer. I have 900 miles on my bike (2019 RGS) and am afraid on what I'll find when I do the 1000 miles service. HD needs to nip this **** in the butt like yesterday. Some have had their warranties denied because of aftermarket parts that have nothing to do with their sumping or oil migration and that's not right.
 
Reply
Old Apr 25, 2019 | 10:23 AM
  #4  
wizardfitz's Avatar
wizardfitz
Cruiser
Joined: Oct 2008
Posts: 126
Likes: 24
From: Franklin, IN
Default

Originally Posted by steveg56
This bites. I'm so done crossing my fingers that I won't sump or transfer. I have 900 miles on my bike (2019 RGS) and am afraid on what I'll find when I do the 1000 miles service. HD needs to nip this **** in the butt like yesterday. Some have had their warranties denied because of aftermarket parts that have nothing to do with their sumping or oil migration and that's not right.
I'm getting a 19 limited in June. Reading all this sumping and transfer issues has me scared spotless. I'm not going to do anything to the bike for fear of voiding the warranty. With all the denials I'm reading my question is does the dealer have to perform the services or am I still allowed to change my fluids?
Because what I've also read is dealers just drain, they dont measure what's coming out.
 
Reply
Old Apr 25, 2019 | 10:35 AM
  #5  
mjwebb's Avatar
mjwebb
Seasoned HDF Member
15 Year Member
Photogenic
Community Builder
Top Answer: 1
Joined: Jan 2008
Posts: 13,621
Likes: 11,354
From: State of Confusion
Default

Originally Posted by wizardfitz
I'm getting a 19 limited in June. Reading all this sumping and transfer issues has me scared spotless. I'm not going to do anything to the bike for fear of voiding the warranty. With all the denials I'm reading my question is does the dealer have to perform the services or am I still allowed to change my fluids?
Because what I've also read is dealers just drain, they dont measure what's coming out.
without knowing your circumstances and reasons for pulling the trigger on one soon (great deals, colors, etc.) I'd consider waiting a couple of months for perhaps no other reason than it'll be a more mature M8..it would seem natural that they would eventually learn from the early ones and make some behind the scenes updates rather than publish and advertise fixes to known problems...I suppose there's a chance they roll out the same thing though. The TC had a looooong run and it obviously matured throughout with modifications along the way..it's a crapshoot though I guess
 
Reply
Old Apr 25, 2019 | 10:50 AM
  #6  
drod's Avatar
drod
Tourer
Joined: Jul 2006
Posts: 253
Likes: 16
From:
Default

I wish I hadn't bought mine...
 
Reply
Old Apr 25, 2019 | 11:03 AM
  #7  
Gead's Avatar
Gead
Cruiser
5 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2016
Posts: 134
Likes: 15
Default

I get the RGS 19 today and I'm already scared ,
 
Reply
Old Apr 25, 2019 | 11:28 AM
  #8  
VDeuce's Avatar
VDeuce
Road Warrior
15 Year Member
Liked
Loved
Community Favorite
Joined: Apr 2007
Posts: 1,382
Likes: 404
From: Illinois
Default

The new venting kit HD has out may fix the issue. It appears you have to go through documenting the transfer problem a couple times before they will order it from HD. There are reports that the vent did not fix it, so there's that.

For those either not worried about warranty or those that have dealers that are willing to install the fat pushrod, that is the route I would go with.

Good luck either way. If HD can't fix it, I would go aftermarket personally.
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

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

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Old Apr 25, 2019 | 11:31 AM
  #9  
VDeuce's Avatar
VDeuce
Road Warrior
15 Year Member
Liked
Loved
Community Favorite
Joined: Apr 2007
Posts: 1,382
Likes: 404
From: Illinois
Default

Originally Posted by wizardfitz
I'm getting a 19 limited in June. Reading all this sumping and transfer issues has me scared spotless. I'm not going to do anything to the bike for fear of voiding the warranty. With all the denials I'm reading my question is does the dealer have to perform the services or am I still allowed to change my fluids?
Because what I've also read is dealers just drain, they dont measure what's coming out.
You can change your fluids and be fine with warranty.

Note that if you change your own fluids and the tranny is low, they will not be able to document it since they did not service it. I advise running the bike several hundred miles, checking the level and if it is low, bring it in to document it. That's the only way you would get on the list for the vent "fix".

Just make sure you use HD fluids. And HD air for your tires. Along with HD gasoline and HD certified intake air supply. Make sure you ride only wearing HD clothing. Then you should be good
 

Last edited by VDeuce; Apr 25, 2019 at 11:34 AM.
Reply
Old Apr 25, 2019 | 12:20 PM
  #10  
702's Avatar
702
Seasoned HDF Member
Joined: May 2018
Posts: 5,814
Likes: 7,144
From: Las Vegas
Default

Originally Posted by VDeuce

Just make sure you use HD fluids. And HD air for your tires. Along with HD gasoline and HD certified intake air supply. Make sure you ride only wearing HD clothing. Then you should be good
Haha!
 
Reply



All times are GMT -5. The time now is 08:57 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-8
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE