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CB350/400
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Fork Seal Removal
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Topic: Fork Seal Removal (Read 5368 times)
Phantom Rider
Newbie
Posts: 31
Fork Seal Removal
«
on:
September 20, 2023, 09:35:51 AM »
I'm stripping down my forks to get the stanchions re-chromed. I'm struggling to remove the old fork seals, as I want to replace these when rebuilding the forks. The Haynes manual, and some YouTube videos, advise that the seals are "simply pryed" out - I've tried this without success. Are there any hints/"tricks of the trade" to remove these? TIA
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McCabe-Thiele (Ted)
Grogu
Posts: 8621
Re: Fork Seal Removal
«
Reply #1 on:
September 20, 2023, 10:14:33 AM »
Have you tried using one or two long thin woodscrews - screw them into the middle of seal sides then use a tool to pull them out with the screw. I'm assuming you have removed the top circlips. Use a piece of wood to protect the fork top if you are levering against the alloy top of the leg.
«
Last Edit: September 20, 2023, 10:17:51 AM by McCabe-Thiele (Ted)
»
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Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration
http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556
Multiman
SOHC Member
Posts: 169
Re: Fork Seal Removal
«
Reply #2 on:
September 20, 2023, 11:47:59 AM »
Mine were a pig to get out.
I resorted to lots of heat and then leverage, with protection for the top of the slider as Ted says.
Good luck
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Bryanj
Grogu
Posts: 12559
Re: Fork Seal Removal
«
Reply #3 on:
September 20, 2023, 04:30:09 PM »
Also dont damage the are the outside of the seal fits on with your pry bar or you will always have a leak
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400 Cafe Racer
SOHC Member
Posts: 155
Re: Fork Seal Removal
«
Reply #4 on:
September 20, 2023, 04:57:22 PM »
Hi,
This tool available on Ebay
Sealey Rubber Seal Gasket O-Ring Puller Remover removal Tool - AK7000
did a super job for me on the forks and would be versatile enough for other jobs.
Hope this helps.
Dennis
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Retired Automotive Engineer MIMI, MITRE, DMS, MCMI.
Latest - 1989 CBR600F1 (FK) PC23
- 1979 CB400/4 Cafe Racer - Parakeet Yellow
- 1939 Velocette GTP 250 twin port Two stroke
1988-91 - Lamborghini Countach QV replica design and
build - 3000hr spare time project -Now Sold
In 1956 at 12yrs old and dirt tracking
- 1937 Rudge 500 4 valve
- 1940s Royal Enfield 225sv
- Ex WD Norton 500sv
Oddjob
SOHC Jedi
Posts: 4735
Re: Fork Seal Removal
«
Reply #5 on:
September 20, 2023, 04:59:22 PM »
Got the same type except mine Snap-On. Works well but as Bryan says be careful you don't gouge the alloy wall. I use a thin sheet of metal to protect the top of the fork.
A bit of heat works wonders too
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Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.
Phantom Rider
Newbie
Posts: 31
Re: Fork Seal Removal
«
Reply #6 on:
September 20, 2023, 07:04:10 PM »
Thanks all - much appreciated
Circlips are removed - I learnt that the hard way many years ago!
With regard to the use of heat - do you concentrate the heat onto the leg (to expand the metal), or the seal (to soften it)?
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McCabe-Thiele (Ted)
Grogu
Posts: 8621
Re: Fork Seal Removal
«
Reply #7 on:
September 20, 2023, 07:26:13 PM »
I've never needed heat but it would soften or melt the rubber part of the seal so it might be safer heating the seal than risking melting the alloy. I suspect a hair dryer on the seal would work.
Logged
Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration
http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556
Oddjob
SOHC Jedi
Posts: 4735
Re: Fork Seal Removal
«
Reply #8 on:
September 20, 2023, 07:33:51 PM »
Heat the alloy, don't use a naked flame or you risk blistering the lacquer, hot air gun will do. As the alloy expands it will allow the seal to pull out easier.
«
Last Edit: September 22, 2023, 07:25:53 PM by Oddjob
»
Logged
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.
Phantom Rider
Newbie
Posts: 31
Re: Fork Seal Removal
«
Reply #9 on:
September 22, 2023, 06:52:41 PM »
Success!!
Heat (from hot air gun) onto metal did the trick, and I was able to pry out the seals.
Thanks for all help - much appreciated.
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Matt_Harrington
SOHC Pro
Posts: 829
Re: Fork Seal Removal
«
Reply #10 on:
September 23, 2023, 10:00:35 AM »
Steve, that saved my withering brain any thoughts on the subject!!
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Matt
___________________________________
CB400F 1976 - Almost finished
CB400F 1977 - On the road!
Moto Guzzi Le Mans 2 - 1981 (undergoing a spruce up)
CD175 - To be restored
Triumph Speed 400
BMW F800GT
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Honda-SOHC
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Fork Seal Removal