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ST1300A repeatedly blowing fork seal. Ideas?

14 Posts | Latest reply on 05/08/2010 13:55:05 by Deleted User | Go to original / last post

14 posts found over 1 pages. Displaying over 1 page.

Paj1369

In: Pickering (York)
Posts: 229

My A2 model ST13 has an annoying habit of blowing the oil out of the right hand side fork seal, the left one has never been a problem, and it's just done it again today! This is the 6th time in 2 1/2 years. The seals are genuine, the first set was replaced by me, the next by a bike mechanic freind and the next ones all by dealers!! The tube is straight, round (had micrometer on it), not scored, scratched or pitted. Has anyone got any ideas why it keeps doing this, and how I can stop it!

Message posted by Paj1369 on 26 June 2010 at 15:53

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Paj1369 @ 26/06/2010 15:53:15

WheelyNealy

In: Near Driffield
Posts: 2751

Hi paul im having same problem on my triumph have thought about a fork brace then the front would be more likely to dive together maybe that may help mate ?

Message posted by WheelyNealy on 26 June 2010 at 16:32

WheelyNealy @ 26/06/2010 16:32:59

DeeStruction

In: Colchester
Posts: 7

a fork brace wont cure the problem.... the forks can only move the same amount, otherwise you'd end up minus your front whelat which point a leaking fork seal would be the least of your worries. Is the any play in the bushes? if your 100% there straight and not pitted then that is the most likely option

Message posted by DeeStruction on 26 June 2010 at 18:03

DeeStruction @ 26/06/2010 18:03:10

Paj1369

In: Pickering (York)
Posts: 229

The bushes were done about this time last year DS,.. around 10k ago, but are going to get replaced anyway this time round too. I can't feel anything around there, but I haven't had it up on the work bench yet for a real good inspection.

Message posted by Paj1369 on 26 June 2010 at 19:09

Paj1369 @ 26/06/2010 19:09:30

whiteairedfox

In: liverpool
Posts: 857

have you checked the amount of oil in each leg?or thethickness of the oil?

Message posted by whiteairedfox on 26 June 2010 at 22:53

whiteairedfox @ 26/06/2010 22:53:13

Paj1369

In: Pickering (York)
Posts: 229

Each time its been done, it's been replaced just as it says in the destruction book, both amounts and viscosity. This is why it's so annoying, everything seems to be ok, and done by the book, but it still blows the right side out after a few rides!

Message posted by Paj1369 on 27 June 2010 at 07:06

Paj1369 @ 27/06/2010 07:06:20

DeeStruction

In: Colchester
Posts: 7

is the book wrong@

Message posted by DeeStruction on 29 June 2010 at 20:50

DeeStruction @ 29/06/2010 20:50:29

Bikeabill

In: Hull /Hessle
Posts: 4467

I know it's a bit tedious but keep swaping bits between the legs and you can find it out from that, the problem will switch to the other side or stay with the lower leg, to start of swap all the upper half of the leg, if the leak moves to other side than you know it's somthing you moved over, if not it's somthing you left behind, then try individual bits till you find it

Message posted by Bikeabill on 29 June 2010 at 21:17

Bikeabill @ 29/06/2010 21:17:56

TeeCee

In: Blair Atholl
Posts: 2888

I knew an Eskimo that used to blow seals. I think be is in prison now...

(it was his manic-depressive brother that was killed by a bi-polar bear last week)

Message posted by TeeCee on 30 June 2010 at 18:43

TeeCee @ 30/06/2010 18:43:20

yamahama

In: leicestershire
Posts: 1606

if the left side has never been touched check the hight of the oil in that leg then compare with the right leg and the specs as errors are sometimes made. the hight of the oil is the important measurement not nessarily the quantity.

Message posted by yamahama on 30 June 2010 at 19:24

yamahama @ 30/06/2010 19:24:21

Paj1369

In: Pickering (York)
Posts: 229

I've just booked the thing in for a major service, with a Honda dealer, and he says he's come across one of these (with the same problem,.. (in the right leg only). That was also an ex-service bike, but a ST1300AP, mines the A2 civilian one. He say's he knows why it's doing it, but just won't tell me yet! I'll update when I get to know,.. someone else might find it usefull if theirs starts been awkward!!!

Message posted by Paj1369 on 30 June 2010 at 21:54

Paj1369 @ 30/06/2010 21:54:26

davewilkins500

In: Bromley
Posts: 3

I have done a lot of ST1300 forks Have an A2 myself and had a bit of trouble dropped the oil level and added 10mm more preload (spacer under top nut) total cure ! the forks as standard use hydro-locking as a bottom stop this on older hard used bikes blows the seals I think I set the oil level to 160mm standard is lot higher
This was as suggested for a customer by a suspension specialist worked for him so I tried it and is is good for me

My bike is ex Passenger Bikes one of the London bike Taxis so has had hard use !

Message posted by davewilkins500 on 29 July 2010 at 19:07

davewilkins500 @ 29/07/2010 19:07:36

Deleted Member

In: NA
Posts: 0

I'm not familiar with the ST1300 - I have the ST1100P. Is the anti-dive valve fitted inside the right leg? If it is it could be sticking and causing the seal to blow.

Message posted by Deleted Member on 29 July 2010 at 21:03

Deleted Member @ 29/07/2010 21:03:10

Deleted Member

In: NA
Posts: 0

Had a Gixer 1100 K a few years ago, same prob, new seal ok for a couple of weeks then.....so replaced as thought seal might be a dud one....but....yep..leaked again after a few weeks! Then just ignored it, as it was only a very slight weep easily wiped off with a tissue. Interestingly the bike had been thrown down the road by the muppet that owned it previously, so, suspected that the fork leg had been bent by a small amount. Was going to do a fork overhaul and replace faulty leg, but, next doors mates nicked it before that happened......

Message posted by Deleted Member on 05 August 2010 at 13:55

Deleted Member @ 05/08/2010 13:55:05

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