Generators and Motors
[Home] - [HELP] - [Forums] - [Library] - [Photo Gallery] - [Groups] - [Classified Ads] - [Subscribe] - [Links] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Vintage Electrical Equipment > Generators & Electric Motors General Discussion > Kohler Generators
Forgot Password? Join Us!


Kohler Generators Restoring, maintaining and operating vintage Kohler generators.

Kohler Generators

Kohler L600, head off, spinning motor, oil oozing past rings

this thread has 5 replies and has been viewed 371 times

Thread Tools Display Modes
Old 11-07-2018, 01:48:50 PM
Kenny Crenshaw Kenny Crenshaw is offline
Join Date: Nov 2015
Location: Millington, Tennessee
Posts: 27
Thanks: 1
Thanked 9 Times in 6 Posts
Default Kohler L600, head off, spinning motor, oil oozing past rings

I am going through an L600 and when I spin the engine over fast without the head on or valves in, there seems to be motor oil appearing/oozing up past the rings on the two center cylinders. I can wipe away the oil, spin it some more, and more oil appears. I do not know the history if this engine, but it seems to have low hours. I do not want to take the generator off to get to the oil pan bolts. What are the chances that there is something wrong with the rings?
Reply With Quote
Sponsored Links
Old 11-07-2018, 03:06:58 PM
I like oldstuff I like oldstuff is offline
Join Date: Jan 2012
Location: Milwaukee, Wisconsin, USA
Posts: 5,597
Thanks: 1,350
Thanked 5,912 Times in 2,315 Posts
Default Re: Kohler L600, head off, spinning motor, oil oozing past rings

Engines will do that, showing seemingly a lot of oil on the cylinders when rotated. Either pull it apart to inspect the rings or put it together and run it. I say run it and see.
I'll assume the rings aren't stuck to the pistons and the cylinders look ok.
Reply With Quote
Old 11-07-2018, 08:36:06 PM
K-Tron K-Tron is offline
Join Date: Sep 2010
Location: Huntington, NY
Posts: 1,744
Thanks: 838
Thanked 851 Times in 591 Posts
Default Re: Kohler L600, head off, spinning motor, oil oozing past rings

I would pull the piston if at all possible and inspect the rings and the piston skirt. I made the mistake of running an air compressor that sat for 50 years unused outside. When the compression ring finally free'ed up it blew the ring landing off the top of the piston. Three years later I am still looking for a replacement piston. If you can pull the piston in an hours time or less it will be worth the effort. It probably has stuck rings, but you never know with these old engines.

Reply With Quote
Old 11-07-2018, 10:22:59 PM
Vanman Vanman is offline
Join Date: Aug 2011
Location: Mission Viejo, California
Posts: 4,936
Thanks: 6,767
Thanked 2,128 Times in 1,450 Posts
Default Re: Kohler L600, head off, spinning motor, oil oozing past rings

The oil base can be removed from the block without removing the generator, giving access to the rod caps and thus allowing the pistons to be removed from the top. Careful with the rings if there is much of a ridge. There is ONE bolt in the center rear essentially between the oil pan and generator that is NOT in the drawings. It screws in from below.
Reply With Quote
Old 11-19-2018, 04:20:41 PM
zaphod zaphod is offline
Join Date: Sep 2018
Location: Harpswell, Maine
Posts: 45
Thanks: 4
Thanked 1 Time in 1 Post
Default Re: Kohler L600, head off, spinning motor, oil oozing past rings

ANY engine will pool oil on top of the pistons without heads. A certain amount of blowby is present before the rings and piston expand and seal.
Reply With Quote
Old 12-02-2018, 12:15:46 PM
dkamp dkamp is offline
eMail NOT Working
Join Date: Oct 2007
Location: LeClaire, Iowa, USA
Posts: 1,482
Thanks: 32
Thanked 751 Times in 492 Posts
Default Re: Kohler L600, head off, spinning motor, oil oozing past rings

Piston rings don't really seal until there's combustion pressure... so seeing film there shouldn't be a big surprise.

Others will tell you with greater accuracy, but I believe the connecting rod lubrication may be such that flow up the rod to wrist pin then exits to the inside of the skirt. If this is the case, that means your oiling system is working.

How's the sump look? level okay? Oil clean? no water?
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
L600 head redmeat Kohler Generators 4 10-20-2016 02:55:17 PM
Kohler L600 head gasket source, nblack Kohler Generators 1 07-24-2016 03:18:01 PM
Kohler L600/L654 cylinder head or gasket leak garys 68 Kohler Generators 10 11-25-2015 06:47:00 PM
L600 slip rings, clean or not? edisondiamond Kohler Generators 4 09-06-2014 04:40:38 PM
Kohler L600 Generator/Motor jvandenboss Kohler Generators 2 12-18-2013 06:19:55 PM

Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 10:01:18 AM.

Smokstak and Enginads site search!

All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2016 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277