oil pressure switch or something else?


Information and questions on GL1100 Goldwings (1980-1983)
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robertdawber
Posts: 285
Joined: Fri Aug 07, 2009 9:24 pm
Location: Eliot, ME
Motorcycle: 1983 GL1100 Interstate

oil pressure switch or something else?

Postby robertdawber » Sun Apr 12, 2015 11:07 am



After putting my engine back in (I replaced the clutch basket, timing belts, water pump, cleaned the engine out to make sure not old clutch parts were there-including the screen-then added and drained with MMO) I started it today and the oil pressure light stays on. The engine sounds great. No odd noise.
Any thoughts?
Bob



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virgilmobile
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Motorcycle: 1988 GL1500 I
Previously owned
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Re: oil pressure switch or something else?

Postby virgilmobile » Sun Apr 12, 2015 12:30 pm

Without running the engine,disconnect the single wire at the oil pressure switch(top right)on the engine.turn on the key.the lamp should be off.As you touch the wire to ground,the light should go on.If this works,you could replace the switch or add a pressure gauge to test the pressure.
If the light stays on with the wire disconnected,that wire is pinched to the frame and grounding out.

robertdawber
Posts: 285
Joined: Fri Aug 07, 2009 9:24 pm
Location: Eliot, ME
Motorcycle: 1983 GL1100 Interstate

Re: oil pressure switch or something else?

Postby robertdawber » Sun Apr 12, 2015 3:49 pm

Thanks for the quick reply ad the help.
I followed your advice and even tested the switch on the bench with air. The switch is good. I then tested for pressure-none at all.
I took the oil drain plug off and some oil came out. When I removed the filter it is still dry!
I have no clue hat to do or what I may have done wrong.

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virgilmobile
Posts: 7659
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: oil pressure switch or something else?

Postby virgilmobile » Sun Apr 12, 2015 4:07 pm

Assuming that there is plenty of oil in the engine (near a gallon),the only other explination for a dry filter and no oil pressure is that the oil pump is disconnected.I believe its chain driven.
Take a look at this.
You'll have to drain the coolant.Remove the cover of the water pump to expose the impellers.Kill the ignition and bump the starter.The impeller should turn.Its attached to the oil pump shaft.
You really don't want to run the engine with no confirmed oil pressure.It may be ok for several minutes but no more.

robertdawber
Posts: 285
Joined: Fri Aug 07, 2009 9:24 pm
Location: Eliot, ME
Motorcycle: 1983 GL1100 Interstate

Re: oil pressure switch or something else?

Postby robertdawber » Sun Apr 12, 2015 4:22 pm

ugggg.
I am so sure I placed that chain on. I will check that though.
If it is not connected is that an engine out job?

robertdawber
Posts: 285
Joined: Fri Aug 07, 2009 9:24 pm
Location: Eliot, ME
Motorcycle: 1983 GL1100 Interstate

Re: oil pressure switch or something else?

Postby robertdawber » Sun Apr 12, 2015 6:45 pm

The impeller is not spinning. I took most of it out but I cannot get the shaft out? It moves clockwise and counter clockwise(very hard to turn-but gets easier for a second and then hard again-I do not know if that is normal?) regardless, it is not coming out. It feels a bit bent - but that could be me and the vise grips.
Any thoughts?
Is this connected in the back somehow? The clymer manual does not say it is.

I sure would hate to take the engine out again....

f1xrupr
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Re: oil pressure switch or something else?

Postby f1xrupr » Sun Apr 12, 2015 8:06 pm

You must not start that engine again! With the oil pump not hooked up, you have a loose chain slinging around in the back of that engine, ripping up every thing in its path! Also, the plain bearings on the crankshaft can not be ran dry! Once residual oil film is gone out of bearing with no new supply, it will ruin the bearings almost instantly, and unforgiving! The rear of engine must be removed so procedure can be completed.
My exercise bike is a goldwing.

robertdawber
Posts: 285
Joined: Fri Aug 07, 2009 9:24 pm
Location: Eliot, ME
Motorcycle: 1983 GL1100 Interstate

Re: oil pressure switch or something else?

Postby robertdawber » Sun Apr 12, 2015 9:02 pm

Thanks for the warning. It only ran for a few minutes -perhaps three before I recognized that there was trouble.
The engine front is off so it will not be starting anyway.

Can both pumps be replaced at the same time?
Bob




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