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brown sludge

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Posts: 96
Joined: Sat Jun 09, 2007 8:17 pm

brown sludge


Post by cosmiccowboy » Thu Sep 04, 2008 5:54 pm

Pulled the primary off my 64 FLH last night and I noticed a brown film over everything inside there. Is this just the remnants of my clutch wear or is it something to worry about. Standard chain primary with a compensator motor sprocket. Thanks in advance for the help.

Posts: 2685
Joined: Sun Jun 06, 2004 5:14 pm
Bikes: '31 VL, '34 VD, '45 WLA, '47 WL, '49 FL, '51 WL, '58 ST (Hummer), '71 GE (Servi)
Location: Lonoke, Arkansas

Re: brown sludge


Post by FlatHeadSix » Thu Sep 04, 2008 6:42 pm

If it looks sorta like light brown chocolate pudding its usually the result of water, condensation or moisture that has homogenized with the oil. Its a very common occurrence in an enclosed primary with a primary chain oiler. The chain and sprockets whip the oil and water together and sling it against the inside of the primary cover where it sticks as a coating and continues to build up until you clean it off.


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Re: brown sludge


Post by Panacea » Thu Sep 04, 2008 7:01 pm

If the chain itself is brown, that's a sighn you need more oil...Mike

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