Author Topic: Fuel cap pins,removal and install?  (Read 3096 times)

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Offline Magpie

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Fuel cap pins,removal and install?
« on: September 07, 2024, 04:19:06 PM »
Hi gang! I have Yamiya repop fuel tank that the previous owner installed a crappy cap/lid on it and I want to install a better one on it. And, I don't want to damage the tank of course. How have you removed the front pin, just driven it out? Or drilled it out? My drill chuck is not long enough to go straight in and clear the tank. I have a long screw and acorn nut to replace it with that I got from Hondaman a long time ago. If I opt to get   a new Honda pin how did you flair the end of it?
Thanks,
Cliff.

Offline Don R

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Re: Fuel cap pins,removal and install?
« Reply #1 on: September 12, 2024, 07:28:38 PM »
 You only need to drill the flare on the end, then the pin will push out. I also got the bolt and nut from Mark.
  I flared one with a punch and a buck on the other end. I tried a c clamp and ball bearing too. My clamp was too weak.
No matter how many times you paint over a shadow, it's still there.
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Offline newday777

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Re: Fuel cap pins,removal and install?
« Reply #2 on: September 13, 2024, 03:11:32 AM »
You can get longer drill bits. 6" and 12"
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 dave500

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Re: Fuel cap pins,removal and install?
« Reply #3 on: September 13, 2024, 03:14:35 AM »
if its the same pin on early 500/550s ive left the flared end intact and just using a correct size punch just knock it through and reuse that pin flaring it back again with a centre punch and care?

Offline BenelliSEI

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Re: Fuel cap pins,removal and install?
« Reply #4 on: September 13, 2024, 04:57:22 AM »
You can get longer drill bits. 6" and 12"

I use my Home Depot Drill extension that has the end you can flip from screw driver to drill bit. It’s about 6” long. Also, cut the side out of a windshield washer fluid tin (flat plastic) and tape it to the tank as a shield!

Offline Stev-o

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Re: Fuel cap pins,removal and install?
« Reply #5 on: September 13, 2024, 07:01:25 AM »
You only need to drill the flare on the end, then the pin will push out. I also got the bolt and nut from Mark.

+1....same here.

And I put two layers of painters tape in the area on the tank while working on it to prevent any damage in the event of slip up.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Don R

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Re: Fuel cap pins,removal and install?
« Reply #6 on: September 13, 2024, 09:16:07 AM »
 X2 on the painters tape, I didn't think to mention that.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline HondaMan

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Re: Fuel cap pins,removal and install?
« Reply #7 on: September 14, 2024, 08:10:35 PM »
[On a tank that needed paint and relining, for starters...] I've used the finishing nail, too, to tap out the old pin. It was in too bad of shape to re-use, which was how those 'hinge pin kits' got started.

Which reminds me: maybe someone is making the 1-1/8" #4-40 screws in 18-8 or 303 stainless again, I should look around? I still have lots of the little acorn nuts.
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

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Offline Magpie

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Re: Fuel cap pins,removal and install?
« Reply #8 on: September 15, 2024, 12:00:23 PM »
Thanks guys, I used all your tips. I layered up the old tank with much painters tape, took a deep breath and had at it. The old tank was in good condition but already had a couple of dings in it near the good fuel cap. I started out with a phillips screw driver that fit the end of the pin quite nicely, a few taps with that and the pin started to move, then went to a smaller screw driver which pushed it through the side of the cap mount. Next I used an automatic spring punch to get it further along then a longer shaft,  narrower spring punch to move it further. A pair of needle nose pliers helped pull the pin out all the way.
Now,on the the perfect Yamiya repop tank. Again layered it in painters tape in prep to pop the pin out on this one. However, the previous owner had just pushed a used pin in and it came out without a fuss.Whew! I had a couple of Mark's long screw and cap nut kits so I used one of them. I didn't want to get near the tanks with a stock pin and flairing tools.
Mark, if you ever make the pin kits with the teeny tiny allen head screw ends, put me down for a couple of them please. They look great.
On a side note, the smaller auto spring punch is great for removing stuck float pins. Just be prepared to catch the pin as it shoots out of the pin holes. I lost one for 6 months in my shop. Good thing I had a spare.
Now the tank looks great with a shiny fuel cap it deserved. And, no dings.



Offline Stev-o

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Re: Fuel cap pins,removal and install?
« Reply #9 on: September 16, 2024, 07:22:20 AM »
Looks good. 

I like the original cap latch over the locking one, no matter how much of a risk Honda thought it was!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Oddjob

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Re: Fuel cap pins,removal and install?
« Reply #10 on: September 16, 2024, 07:34:35 AM »
Not a fan of the acorn nut tbh, there are some pins sets on ebay which use horseclips instead. They are unobtrusive in comparison

Offline BenelliSEI

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Re: Fuel cap pins,removal and install?
« Reply #11 on: September 17, 2024, 06:05:55 AM »
Cliff…. Looking good!

Offline HondaMan

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Re: Fuel cap pins,removal and install?
« Reply #12 on: September 17, 2024, 08:37:20 AM »

Mark, if you ever make the pin kits with the teeny tiny allen head screw ends, put me down for a couple of them please. They look great.

That's a good idea! They are usually prettier than the crosspoint screw heads, too. I'll look around. The material must be stainless steel to prevent sparking issues. The OEM pins were a tin-aluminum alloy that didn't spark.
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

Offline Magpie

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Re: Fuel cap pins,removal and install?
« Reply #13 on: September 17, 2024, 12:10:25 PM »
Better?

Offline BenelliSEI

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Re: Fuel cap pins,removal and install?
« Reply #14 on: September 17, 2024, 02:41:39 PM »
That looks really good!

Offline newday777

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Re: Fuel cap pins,removal and install?
« Reply #15 on: September 17, 2024, 03:02:40 PM »
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 Magpie

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Re: Fuel cap pins,removal and install?
« Reply #16 on: September 17, 2024, 06:39:48 PM »
Strangely enough, Canadian Tire has a small selection of C clips.

Offline Oddjob

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Re: Fuel cap pins,removal and install?
« Reply #17 on: September 18, 2024, 03:12:02 AM »
Yes that looks much better.

Offline WhyNot2

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Re: Fuel cap pins,removal and install?
« Reply #18 on: September 18, 2024, 05:12:41 AM »
If it ain't raining, I'm riding.....~~{iii}?~~prost

If it sounds like I know what I'm talking about, it's because I cut and pasted from someone else.


Offline Oddjob

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Re: Fuel cap pins,removal and install?
« Reply #20 on: September 18, 2024, 10:06:53 AM »
Isn’t the pin supposed to be rebated for the clip to go into?

Offline Magpie

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Re: Fuel cap pins,removal and install?
« Reply #21 on: September 18, 2024, 10:55:30 AM »
If "rebated"means is there a slot in the pin at one end the answer is yes. The clip goes in the slot. The OEM is a rivet. Cliff.

Offline WhyNot2

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Re: Fuel cap pins,removal and install?
« Reply #22 on: September 20, 2024, 07:38:00 AM »
So what about the pin, where do  you get the pin with the slot?

I have a few tanks I need to get the caps and locks back on.
If it ain't raining, I'm riding.....~~{iii}?~~prost

If it sounds like I know what I'm talking about, it's because I cut and pasted from someone else.


Offline newday777

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Re: Fuel cap pins,removal and install?
« Reply #24 on: September 20, 2024, 08:38:38 AM »
So what about the pin, where do  you get the pin with the slot?

I have a few tanks I need to get the caps and locks back on.
IIRC there was a place to get just the slotted pins... still looking but vintagecb750.com has the pins and latch combo.

https://vintagecb750.com/collections/fuel-system

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