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Author Topic: Swing Arm Question  (Read 700 times)

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Offline Scootch

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Swing Arm Question
« on: July 13, 2022, 02:08:43 PM »
1970 CB 750 K0

Are these things grease fittings? There doesn't seem to be zerk fittings anywhere in the swing arm. If these are grease fittings can you point me to an attachment for my grease gun? Help me understand how I keep the swing arm lubricated....
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Offline cfairweather

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Re: Swing Arm Question
« Reply #1 on: July 13, 2022, 02:43:50 PM »
Yes, these are grease fittings and a regular grease gun will work on them.  These fittings get clogged up very easy, so if you cannot get a grease gun to work, you need to remove the axle and clean out the swingarm/axle.   Sometimes they are severely plugged and you may have to replace the grease fittings, which you can still order for a few bucks.  You should make sure you can pump grease through the holes before you reassemble.  Obviously, grease everything before you reassemble everything.   
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Offline Alan F.

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Re: Swing Arm Question
« Reply #2 on: July 13, 2022, 04:53:30 PM »
You can pull those out with a pair of pliers and drill the bore out one size larger at a time until you get to 7/32", then you can tap 1/4-28 threads for a commonly available grease fitting.

Of course you'll need to disassemble the pivot bolt from the bike to do this in order to clean out all of the old grease and new metal chips.
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Offline Scootch

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Re: Swing Arm Question
« Reply #3 on: July 13, 2022, 05:20:06 PM »
Guys thank you very much for the info !
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Offline newday777

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Re: Swing Arm Question
« Reply #4 on: July 14, 2022, 03:29:52 AM »
CMS and Yamiya have those grease nipples still if you are doing a full restoration.

https://www.yamiya750.com/index.php?main_page=product_info&cPath=246_251_142_94&products_id=1912

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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline bryanj

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Re: Swing Arm Question
« Reply #5 on: July 15, 2022, 12:08:44 AM »
Why not drill and tap 6mm and use 6mm zerks, it is after all a metric bike!
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Offline MauiK3

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Re: Swing Arm Question
« Reply #6 on: July 15, 2022, 07:56:10 AM »
Just depends on how original a person wants to be.
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1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline HondaMan

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Re: Swing Arm Question
« Reply #7 on: July 15, 2022, 07:29:51 PM »
I drill those holes with a #2 drill (Ace Hardware) and tap them 1/4-28 (Ace Hardware), then clean out the old grease (pipe cleaner and brake cleaner spray) and thread the new ones in, snug.
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See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

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Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

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Offline Scootch

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Re: Swing Arm Question
« Reply #8 on: July 16, 2022, 03:15:34 AM »
Thanks for the input everyone! Yesterday I collected the drill bit, tap and zerk fittings. In the next day or so I plan on attending to this.

I do have a question....  should I be able to pull the existing fittings out with pliers??  Or do they unscrew??  Or??
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Offline newday777

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Re: Swing Arm Question
« Reply #9 on: July 16, 2022, 03:50:35 AM »
They pull out with pliers. They were just pressed in.
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline MauiK3

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Re: Swing Arm Question
« Reply #10 on: July 16, 2022, 07:01:32 PM »
If the swingarm is still on the bike you need to be concerned about getting shavings out.
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1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline Scootch

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Re: Swing Arm Question
« Reply #11 on: July 18, 2022, 10:35:41 AM »
Installed the new zerk fittings. It went quite well. Managed to keep metal chips out from drilling by putting grease on the drill bit. Kept backing the tap up to clear the thread chip. Got concerned a couple times that was having to exert a lot of force on the tap. Didn't want to break it off...
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Offline HondaMan

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Re: Swing Arm Question
« Reply #12 on: July 18, 2022, 09:53:48 PM »
Quote from: Scootch on July 18, 2022, 10:35:41 AM
Installed the new zerk fittings. It went quite well. Managed to keep metal chips out from drilling by putting grease on the drill bit. Kept backing the tap up to clear the thread chip. Got concerned a couple times that was having to exert a lot of force on the tap. Didn't want to break it off...

...I've done that already. I can report it isn't any fun... :(
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See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com
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