Quick Sumping/Migration question
Cruiser
Joined: Sep 2016
Posts: 148
Likes: 38
From: Freehold NJ
I had a blown seal on my RK. Lost a quart and a half into the primary. HD replaced the seal and it hasnt happened again.
Tourer
Joined: Dec 2013
Posts: 339
Likes: 9
From: Washington
If you think the extra oil you found in the primary came from your engine oil, your eng oil light should have illuminated for a low oil level.
This happened on my 2017 rgs all stock. Eng low oil light illuminated at about 9k miles. Service dept. found a bad seal between engine oil chamber and primary chain case. Eng oil migration into primary is no longer happening after this repair.
This happened on my 2017 rgs all stock. Eng low oil light illuminated at about 9k miles. Service dept. found a bad seal between engine oil chamber and primary chain case. Eng oil migration into primary is no longer happening after this repair.
Seasoned HDF Member
Joined: Jan 2006
Posts: 11,463
Likes: 2,990
From: Charleston, SC
If you think the extra oil you found in the primary came from your engine oil, your eng oil light should have illuminated for a low oil level.
This happened on my 2017 rgs all stock. Eng low oil light illuminated at about 9k miles. Service dept. found a bad seal between engine oil chamber and primary chain case. Eng oil migration into primary is no longer happening after this repair.
This happened on my 2017 rgs all stock. Eng low oil light illuminated at about 9k miles. Service dept. found a bad seal between engine oil chamber and primary chain case. Eng oil migration into primary is no longer happening after this repair.
Thread Starter
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Tourer
Joined: Aug 2012
Posts: 330
Likes: 16
From: Colorado
If you think the extra oil you found in the primary came from your engine oil, your eng oil light should have illuminated for a low oil level.
This happened on my 2017 rgs all stock. Eng low oil light illuminated at about 9k miles. Service dept. found a bad seal between engine oil chamber and primary chain case. Eng oil migration into primary is no longer happening after this repair.
This happened on my 2017 rgs all stock. Eng low oil light illuminated at about 9k miles. Service dept. found a bad seal between engine oil chamber and primary chain case. Eng oil migration into primary is no longer happening after this repair.
Very good point! I would assume that had I kept going, that would eventually happen. The engine oil was down about 1/2 a qt and still in the "OK" range on the stick.
Tourer
Joined: Dec 2013
Posts: 339
Likes: 9
From: Washington
You are correct. Apparently, the oil pressure sensor designed is to monitor oil pressure dropped and oil level at same time.
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HD EFI Guru
Joined: Jan 2008
Posts: 4,453
Likes: 4,707
Its not doing anything other than looking at the minimum pressure as its a switch not a true pressure sensor. Think Off/On
Seasoned HDF Member
Joined: Jan 2006
Posts: 11,463
Likes: 2,990
From: Charleston, SC
Yeah forgot I'm in the M8 forum. Yes, it's an actual switch, although a switch can be used as a sensor. 
Just not in this application.
It doesn't measure oil level.
Just not in this application.It doesn't measure oil level.
Last edited by lp; Dec 6, 2017 at 09:07 PM.