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Fork Seals Help

Started by AAAltered, February 08, 2025, 12:56:58 PM

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m in sc

congrats!  :olaf:  i know you know this, but def smooth out the nicks where the seal sat. you may want to use a tad of sealant in there upon reassembly, the anaerobic stuff from Permatex is non hardening.

AAAltered

Yea Mark, it's obvious that a hamhand other than me has been in there in the last 49 years.... I'll clean them up before the new seals go in.

1971 R5
1976 RD200
2022 Moto Guzzi V7 850 Special

2T5

Quote from: AAAltered on February 09, 2025, 11:58:28 AMIt does seem to have a steel band in there that may be part of the old seal or may be part of the fork inner, I can't tell.

What was the outcome here? Was it part of the old seal, and how did you end up getting it out?

AAAltered

That WAS part of the old seal.  Once I knew it (by getting the other seal out intact) I used a small flat blade and was able to tap it in behind the band and pop it out.
1971 R5
1976 RD200
2022 Moto Guzzi V7 850 Special

RDnuTZ

example of OEM banded fork seals from eBay. (not mine).

https://www.ebay.com/itm/314280825684

1987 TZR250R Restricted Japan Domestic market bike (Project)
1977 RD400 (Project)
1974 RD350 (2) (Projects)
1973 RD250 (Project)
2022 Beta 300 X-Trainer, Yamaha Vintage MX, YZ (18)

AAAltered

Yup, has to be them.

This is the metal band I pulled out last night.
1971 R5
1976 RD200
2022 Moto Guzzi V7 850 Special

AAAltered

Ok, so which faces DOWN on the new seals?  Left one or right one? 
I suspect the right one, as that puts the wiper part of the seal at the top.

1971 R5
1976 RD200
2022 Moto Guzzi V7 850 Special

1976RD400C

Yes, the side with the spring goes down into the tube when installing.
'76 RD400 green  '76 RD400 red   '84 RZ350

AAAltered

Who knew, a 30mm socket is a perfect seal driver...

1971 R5
1976 RD200
2022 Moto Guzzi V7 850 Special

AAAltered

Put the legs in the oven for 10 minutes at 175, seals went in easy with the driver.  Rings and retaining clips back in and good to go...

Thanks for all the tips gang.


1971 R5
1976 RD200
2022 Moto Guzzi V7 850 Special

axldk6

jumped on this thread to give ya a thumbs up  :thumbs: . hope mine goes as good , lol
been wrenching for many years, still need help some times
1974 RD 350A ( full project bike)
2002 Kawasaki  ZRX 1200R  ( 99% complete)

axldk6

jumped on this thread to give ya a thumbs up  :thumbs: . hope mine goes as good , lol
been wrenching for many years, still need help some times
1974 RD 350A ( full project bike)
2002 Kawasaki  ZRX 1200R  ( 99% complete)

Simoniz

Good to hear you got it sorted out. These "simple" jobs can be the worst ones.

I use a 2 foot offcut of PEX plumbing pipe in the same diameter as the seal to drive in new fork seals easily. Fits snugly and provides even pressure to push it home when hammered in lightly. Usually found in the offcuts box at the local Ace Hardware for $1. As you found, sockets work fine too.

AAAltered

Just to close out this thread from the other week.  Seals out, seals in.  Crappy gators are gone and replaced with correct dust seals.  The pitting on the fork inners isn't that bad, none is near the seal travel. I took Marks advice and turned the most unsightly areas inward.  I did buy a silver marker, not sure if I'm going to use it as it didn't seem to hold up too well in a test spot even though it's solvent based.

Anyway the bike was back together and tested.  Now it's getting some other maintenance items like tank dampers, rear brake switch replacement and overall deep cleaning.

1971 R5
1976 RD200
2022 Moto Guzzi V7 850 Special

RDnuTZ

1987 TZR250R Restricted Japan Domestic market bike (Project)
1977 RD400 (Project)
1974 RD350 (2) (Projects)
1973 RD250 (Project)
2022 Beta 300 X-Trainer, Yamaha Vintage MX, YZ (18)