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post #1 of 17 (permalink) Old 07-30-2020, 11:36 PM Thread Starter
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Fork seals

What the actual fork seal is going on with these stock seals?!?!?!??!! Went to take a spin tonight on my ‘05 and dumped it on the edge of the driveway and grass thankfully, so no damage to the bike. It flat out swapped ends on me as I was just letting out of the clutch. Once I got it back upright I looked at both sides of the wheel and the right side was SOAKED in fork oil as was the tire. The left side started leaking the night after I bought it as the old fellow hadn’t rode it in awhile. I was in the garage 3/4 days ago looking over the bike and nothing on it.

So needless to say folks, give ya bike the once over before throwing a leg over. Hoping to be able to go ahead and get in the shop for fork rebuild, new springs, and a new front tire. Leaning towards A Specs in either Pirelli Angel GT front and GT2 rear or Michelin Road 5GT set.

Upside, FINALLY got my 3rd gen rear shock in from Aussie land after a month and a half.

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post #2 of 17 (permalink) Old 07-31-2020, 10:28 AM
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Forks rarely leak in the garage. The leak starts when you are riding and pumping fluid up and down, getting it warm. Had you performed a complete inspection before departing it is very likely you would have found nothing amiss.

As for tires, the Pirelli Angel GTs are good, the -2 and the A-spec. But the only tire I would want less than a Michelin Pilot 5 is a Shinko 016.

Am very surprised at how sickenly happy I am with a Bridgestone T31 GT on front and PR4GT on rear. This combination occurred by accident when my rear T31 developed a leak that I couldn't repair. And I'm too cheap to throw away a perfectly good front T31 when it had half its tread remaining. A new PR4GT front is waiting.

The Bridgestone T30 and T31 are perhaps the best value tires for FJR today. Maybe 75% the life of PR4GT at 2/3 cost. Your cost to mount might tip cost-per-mile in favor of PR4, math required. My T31 GT front is riding sweet right to the cords, no matter the scalloping which can not be avoided.

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post #3 of 17 (permalink) Old 08-20-2020, 06:52 PM Thread Starter
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Forks rarely leak in the garage. The leak starts when you are riding and pumping fluid up and down, getting it warm. Had you performed a complete inspection before departing it is very likely you would have found nothing amiss.

As for tires, the Pirelli Angel GTs are good, the -2 and the A-spec. But the only tire I would want less than a Michelin Pilot 5 is a Shinko 016.

Am very surprised at how sickenly happy I am with a Bridgestone T31 GT on front and PR4GT on rear. This combination occurred by accident when my rear T31 developed a leak that I couldn't repair. And I'm too cheap to throw away a perfectly good front T31 when it had half its tread remaining. A new PR4GT front is waiting.

The Bridgestone T30 and T31 are perhaps the best value tires for FJR today. Maybe 75% the life of PR4GT at 2/3 cost. Your cost to mount might tip cost-per-mile in favor of PR4, math required. My T31 GT front is riding sweet right to the cords, no matter the scalloping which can not be avoided.
While I would agree with your statement full heartedly would agree about the leaking, how ever, the bike has been sitting in the garage for the most of July waiting for some parts, and other thing going on right now personally. Even though I had not road it, I had spent plenty of time with my hands on it, sitting on it, moving it around, trying different parts out. Then sat for 3-4 days and I came out to do something else, take a quick spin, you know the rest. I am 49 years old and I have been riding for 45 of those years, so yeah, I knew better not to look it over quickly, but this time it bit me in the butt.

I am now debating between going with All Balls seals and dust caps or go back with oem

David

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post #4 of 17 (permalink) Old 08-21-2020, 12:37 AM
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I am now debating between going with All Balls seals and dust caps or go back with oem
When the time comes I will select between SKF fork seals and dust caps vs OE Yamaha (not just seals from the manufacturer Yamaha buys from).

There are times I trust All-Balls, however in recent years SKF seals have really proven themselves in the dirtbike world.

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post #5 of 17 (permalink) Old 08-21-2020, 05:03 AM
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For the shock to have leaked so much oil so quickly, the whole seal must have popped out of it's housing.

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post #6 of 17 (permalink) Old 08-21-2020, 07:05 AM Thread Starter
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For the shock to have leaked so much oil so quickly, the whole seal must have popped out of it's housing.
I have spent most of the night looking to see what may have happened. Left side has been spitting at me then stopped. Right side, I am thinking that maybe the retention ring that is installed after the seal is installed may have become dislodged from the groove.

I just finished making my own version of a seal mate with two slightly different hooks on the end. Fingers crossed I get it on the lift, pull up the dust seals and find a bunch of crap, or the retention ring dislodged. Hoping to put off the fork rebuild until winter time and give me more time to figure out what I’m going to go with.
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post #7 of 17 (permalink) Old 08-21-2020, 07:11 AM Thread Starter
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Quote:
Originally Posted by David Shelton View Post
I am now debating between going with All Balls seals and dust caps or go back with oem
When the time comes I will select between SKF fork seals and dust caps vs OE Yamaha (not just seals from the manufacturer Yamaha buys from).

There are times I trust All-Balls, however in recent years SKF seals have really proven themselves in the dirtbike world.
Now that is what I like to hear, positive input with some enthusiasm. I was looking at SKF, but dismissed them since I had seen no mention in the threads I have read so far. Reading through the threads between forks and tires since about midnight.

I did back the dampening adjusters all the way ccw and then set them both same amount cw and done the same to the rear shock. I will say that for my robust pear shape size, she did ride and handle considerably better.

Love this group and appreciate everyone in it.

David

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post #8 of 17 (permalink) Old 08-21-2020, 07:29 AM
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The SealMate will buy you some time, as you likely have dirt or dried bug guts preventing a good seal. You can lift the dust seals and see if the wire retainer came out, but that would be very unlikely.
Oil level is always above the seal, so with air compressing as the forks travel, it will put more oil pressure in the seal area. I have had seals leak just from tying it down on a trailer and leaving it for a few days. Same deal, there was dirt build-up and it wouldn't quit while I rode.
OEM seals are good, but SKF are premium silicone-like materials. Might be a little harder to find, and expect to pay more. IF I had a dirt bike, I'd have them for sure, but I've never used more than OEM on FJR's.
Note, get the wire retainers from a Honda ST1300 or Kawi C-14 (48mm forks), with their design they are much easier to remove next time.
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post #9 of 17 (permalink) Old 08-21-2020, 07:35 AM Thread Starter
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Originally Posted by Bernie View Post
For the shock to have leaked so much oil so quickly, the whole seal must have popped out of it's housing.
I would estimate the amount of oil lost to be a little more than 1/4 cup. It pooled up on the right side of the rim with the steering to the left, ran down the tire, soaking the equivalent to my 2xl hands, and then left a wee puddle on the floor of the garage. My first panic was it HAD to be a busted brake hose and was going to ruin the wheel finish. After checking lines top to bottom they were bone dry. Then I felt the fluid and realized it was in fact oil.

Bike had probably set 5-8 months prior to me taking it for a spin. So going from a 162lb man to a 290lb man she just revolted and said fork you fatty get off me.
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post #10 of 17 (permalink) Old 09-05-2020, 08:00 AM
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Just wondering do you keep it on the center stand or side stand when it sits in the garage? My 08 started leaking just a little bit when sitting. When I got the bike I kept it on the center stand but got lazy and quit doing that. It wasn't long after that the leaking occurred. I used a seal mate a couple of times and started keeping it on the center stand as I don't ride it very often at all. I rode 300 miles yesterday and didn't have even a bit of seeping.

I just wonder if it's leaving the forks compressed along with the weight of the bike that will eventually force fluid past suspect seals. Putting it on the center stand really takes a lot of weight off the front end as I can easily lift the front of the bike by pulling up on the front wheel.

Maybe you should just clean your seals, top off the level and see if leaving it on the center stand when storing prevents the issue from happening again.
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