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Old 06-24-2014, 03:03 PM   #1
kikiboi OP
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lofs of oil build up under alternator...signs of more bad things to come???

so i bought a r90/6 and started to tear it apart, (not sure if it runs or not since it has been sitting and owner lost the keys) so after tearing down some things i notice a lot of oil build up under the oil pan and as well as the alternator area... but there is oil in the engine and i dont see any apparent cracks.

only issue is the clutch will not get into gear....

what do you think?



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Old 06-24-2014, 03:32 PM   #2
disston
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Once you get this started if the area then becomes wet it is leaking enough to fix the seal on the crankshaft, under the alternator. If it is not actually wet then it isn't leaking very fast. It can be fixed when you do the timing chain.

Leaking oil pan gaskets are common. Tightening the bolts may fix it or at least slow the leak down. These bolts don't have a lot of torque on them and need to be tightened once in a while. Sometimes a new gasket also helps.

Change the engine oil before you start a bike that has really old oil in it.
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Old 06-24-2014, 03:42 PM   #3
Bill Harris
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Quote:
and started to tear it apart
Let's not tear it apart or mess with it. That is not a good mindset to get into. Think of it more as inspecting, diagnosing and repairing the problem.

Likely this is leakage from the seal on the crankshaft where the alternator attaches. It looks fairly dry, so this may be a weep clean it up (carefully wipe, you've got the points just below)-- and see how much once the bike is running. If is is a major leak, it's not a big deal to remove the alternator and replace that seal with everything else in-place.

I'd plan to replace that rubber gasket/sealing ring around the points chamber. That keeps oil from leaks and water from puddles off'n the points.

Leaks down below? May be pushrod tube seals, may be oil pan bolts not tight. Clean everything off and see where and how bad the leaks are once it get running.

Clutches don't get in gear. The engage or disengage or not.If it does not disengage when you pull the lever in, then likely the clutch disk is stuck to the pressure plate with rust. Put the trans in first gear, pull the clutch in and push the bike firmly at the resistance. Do it for a while. If that does not break it loose, you'll have to wait til the engine in running for Plan B.

Bike sat for a while? Pull the left side of the air cleaner clamshell off and check for mouse's nests. Favorite spot for 'em.

--Bill
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Old 06-24-2014, 04:01 PM   #4
kikiboi OP
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Quote:
Originally Posted by Bill Harris View Post
Let's not tear it apart or mess with it. That is not a good mindset to get into. Think of it more as inspecting, diagnosing and repairing the problem.

Likely this is leakage from the seal on the crankshaft where the alternator attaches. It looks fairly dry, so this may be a weep clean it up (carefully wipe, you've got the points just below)-- and see how much once the bike is running. If is is a major leak, it's not a big deal to remove the alternator and replace that seal with everything else in-place.

I'd plan to replace that rubber gasket/sealing ring around the points chamber. That keeps oil from leaks and water from puddles off'n the points.

Leaks down below? May be pushrod tube seals, may be oil pan bolts not tight. Clean everything off and see where and how bad the leaks are once it get running.

Clutches don't get in gear. The engage or disengage or not.If it does not disengage when you pull the lever in, then likely the clutch disk is stuck to the pressure plate with rust. Put the trans in first gear, pull the clutch in and push the bike firmly at the resistance. Do it for a while. If that does not break it loose, you'll have to wait til the engine in running for Plan B.

Bike sat for a while? Pull the left side of the air cleaner clamshell off and check for mouse's nests. Favorite spot for 'em.

--Bill
thank you.
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