'76 harley 4 Speed oil level - The Jockey Journal Board

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Old 08-27-2019, 05:58 AM   #1
46international
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Default '76 harley 4 Speed oil level

I know this has to have been asked before but I could not find the answer so here goes.
What is the correct oil lever for a 4 speed transmission? is it the bottom edge of the oil fill hole or is it that pipe plug in the center of the side cover?
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Old 08-27-2019, 08:41 AM   #2
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Default Re: '76 harley 4 Speed oil level

The 1/8th plug is the level.
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Old 08-27-2019, 11:07 AM   #3
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Default Re: '76 harley 4 Speed oil level

Is it? thanks, I have seen books, on line stuff that all say fill to bottom of fill hole then others that say if you over fill it may cause leaks. so that is what got me thinking, how can you over fill if you fill to the bottom of the filler hole? Then I have seen filler plugs with dip sticks, and once again why would you have a dip stick if you fill to the bottom of the filler hole?

Anyway, thanks for clearing it up!
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Old 08-27-2019, 11:15 AM   #4
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Default Re: '76 harley 4 Speed oil level

1.5 pints (24 ounces).
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Old 08-27-2019, 11:55 AM   #5
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Default Re: '76 harley 4 Speed oil level

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Is it? thanks, I have seen books, on line stuff that all say fill to bottom of fill hole then others that say if you over fill it may cause leaks. so that is what got me thinking, how can you over fill if you fill to the bottom of the filler hole? Then I have seen filler plugs with dip sticks, and once again why would you have a dip stick if you fill to the bottom of the filler hole?

Anyway, thanks for clearing it up!
Not every kicker cover has that hole. If you overfill 'em, the extra just slobbers out the vent.
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Old 08-28-2019, 12:12 PM   #6
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Default Re: '76 harley 4 Speed oil level

4 speed covers without the 1/8'' plug fill to the bottom of the fill hole.
Bike should be up rite not on stand.
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Old 08-28-2019, 02:41 PM   #7
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Default Re: '76 harley 4 Speed oil level

Don't overthink this . . .

Needs to be high enough that the gears and throwout bearing oil slinger are dipping below the oil level.

Needs to be low enough that it's not running out the main drive gear or clutch rod journal in the main shaft.

Everything in between those levels seems like it'd be find to me. I've never lost a trans to lube issues.

Jason
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Old 08-29-2019, 07:06 AM   #8
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Default Re: '76 harley 4 Speed oil level

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4 speed covers without the 1/8'' plug fill to the bottom of the fill hole.
Bike should be up rite not on stand.
but there is a big difference between where the 1/8" plug is and the bottom of the filler hole. unless the covers without the 1/8" plug have a lower fill hole.
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Old 08-29-2019, 07:08 AM   #9
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Default Re: '76 harley 4 Speed oil level

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Don't overthink this . . .
Needs to be low enough that it's not running out the main drive gear or clutch rod journal in the main shaft.
Jason
This is the problem I'm having and yes, I'm filling it up to the bottom of the fill hole. That is about an inch or two above the 1/8" plug hole.
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Old 08-29-2019, 07:39 AM   #10
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Default Re: '76 harley 4 Speed oil level

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but there is a big difference between where the 1/8" plug is and the bottom of the filler hole. unless the covers without the 1/8" plug have a lower fill hole.
Yes the hole is lower on the older covers without the 1/8'' plug and you are over filled.
You have the plug, that is the level.
You have no plug, the bottom of the fill hole is the level.
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Old 08-31-2019, 08:15 AM   #11
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Default Re: '76 harley 4 Speed oil level

I got a leaky main seal ...if I fill to the threads , it just leaks out , so I fill so it comes up on the throwout bearing . I use about a quart every 2 or 3 years …..it jus a panhead , oil is cheap !
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