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Author Topic: Leaking oil.... The saga continues.  (Read 3733 times)

Offline DaleAP

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Leaking oil.... The saga continues.
« on: February 14, 2022, 01:17:49 PM »
Good news!   The new valve cover gaskets have arrived and are now fitted, and they are no longer leaking.
Bad news!   Now that I've eliminated that leak, I have now found the next leak to fix.
Good news!   It looks like that is now the only leak left to fix.
Bad news!   It looks like a pain to get to.

It's low down on the left-rear of the engine, but I'm not sure what this part is (I'm assuming it's the alternator?).

From what I can tell the top of it is perfectly dry, so the leak is at the lower part of it's seal. Any wiser heads able to tell me what this component is, and if it's a pain to sort out, as I suspect it might be?
« Last Edit: February 14, 2022, 02:44:51 PM by DaleAP »
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Dale Porter
1995 ST1100 ABS/TCS  :bl11

Past bikes: GPX-250 -> CBR-600F2 -> CBR-954RR -> VTR-1000
 

Offline Yorkie

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Re: Leaking oil.... The saga continues.
« Reply #1 on: February 14, 2022, 09:39:30 PM »
Looks like the alternator, drain all the oil before you remove it or it will be very messy.
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Brian 0418937173
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So at what age does this "old enough to know better" kick in?
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Offline DaleAP

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Re: Leaking oil.... The saga continues.
« Reply #2 on: February 14, 2022, 10:14:50 PM »
Quote from: Yorkie on February 14, 2022, 09:39:30 PM
Looks like the alternator, drain all the oil before you remove it or it will be very messy.

Yep, I've been doing some further research, and I've taken the fuel tank out for a better view.

It turns out the previous owner told me a porky and the alternator has not been upgraded, so I'm trying to decide if I fix the seal to get back on the road or keep the bike off the road longer and attempt the upgrade. Leaning towards the latter at this stage.
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Dale Porter
1995 ST1100 ABS/TCS  :bl11

Past bikes: GPX-250 -> CBR-600F2 -> CBR-954RR -> VTR-1000
 

Offline Yorkie

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Re: Leaking oil.... The saga continues.
« Reply #3 on: February 15, 2022, 09:20:17 PM »
95 should have the 40 amp alternator factory fitted
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Brian 0418937173
Manager York Motor Museum

In the shed
1999 ST1100A
1971 CB750K2
1980 XV750
1977 GL1000
FR#720
CMRCWA #133
York,WA

So at what age does this "old enough to know better" kick in?
I believe in the "hereafter", every time I go to the shed I have to think "what am I here after"
 

Offline DaleAP

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Re: Leaking oil.... The saga continues.
« Reply #4 on: February 15, 2022, 09:26:06 PM »
Quote from: Yorkie on February 15, 2022, 09:20:17 PM
95 should have the 40 amp alternator factory fitted

Everything I've found so far says the 40 amp was introduced on the 1996 models. Mine's definitely the 28 amp version though.
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Dale Porter
1995 ST1100 ABS/TCS  :bl11

Past bikes: GPX-250 -> CBR-600F2 -> CBR-954RR -> VTR-1000
 

Offline Brock

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Re: Leaking oil.... The saga continues.
« Reply #5 on: February 15, 2022, 11:39:03 PM »
The 28A were oil cooled, and prone to leaking. There is a special tool that can be made, to help fit the 40A , info available on the net but I forget where..
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Brock
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Offline ruSTynutz

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Re: Leaking oil.... The saga continues.
« Reply #6 on: February 16, 2022, 12:08:58 AM »
These videos might help if you go with the 40amp upgrade...

https://youtu.be/ANHdAGDuYMg

https://youtu.be/PfrSOTBczGo
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Offline ruSTynutz

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Re: Leaking oil.... The saga continues.
« Reply #7 on: February 16, 2022, 12:19:38 AM »
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Offline DaleAP

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Re: Leaking oil.... The saga continues.
« Reply #8 on: February 16, 2022, 02:41:10 PM »
Thanks guys. From what I can tell so far from all the forums and videos I've seen is that the tricky part is using a special pin/tool to lock the front gears in place during the install, but is it possible to fit the new alternator without removing the front gear setup in the first place?

Or are there modifications that need to be made that requires it all to be removed?
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Dale Porter
1995 ST1100 ABS/TCS  :bl11

Past bikes: GPX-250 -> CBR-600F2 -> CBR-954RR -> VTR-1000
 

Offline DaleAP

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Re: Leaking oil.... The saga continues.
« Reply #9 on: February 23, 2022, 11:32:25 AM »
Well Sir, there's your problem.....

I have managed to open up the alternator, and the o-ring was tucked up inside the back section. Removed it and found it is nicely flattened and quite hardened (with the exception of a 2-3 cm section that was very stretchy).

I'm going to leave the upgrade option for another time, so will replace the o-ring and get the bike back on the road for now.

Although that in itself is proving an interesting task as there are no Honda/Hitachi 95.5 x 2.4 o-rings in the country! There's a bearing place near me that says they have a 90 x 2.5, so I'll see if that works.
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Dale Porter
1995 ST1100 ABS/TCS  :bl11

Past bikes: GPX-250 -> CBR-600F2 -> CBR-954RR -> VTR-1000
 

Offline ruSTynutz

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Re: Leaking oil.... The saga continues.
« Reply #10 on: February 23, 2022, 04:45:16 PM »
If you get desperate... :popcorn

I had a quick look at Partzilla for part number 91306-MS2-611 and it seems like they have one in stock.

$7.33 + Shipping + handling $14.99 Total:   *$22.32
4-8 Day Shipping After Processing...

* American Dollars...



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Offline DaleAP

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Re: Leaking oil.... The saga continues.
« Reply #11 on: February 23, 2022, 04:47:51 PM »
Quote from: ruSTynutz on February 23, 2022, 04:45:16 PM
If you get desperate... :popcorn

I had a quick look at Partzilla for part number 91306-MS2-611 and it seems like they have one in stock.

$7.33 + Shipping + handling $14.99 Total:   *$22.32
4-8 Day Shipping After Processing...

* American Dollars...

I've grabbed the one from the bearing place near me and have put it in place, and it seems to be a great fit. Now slowly doing up the bolts to make sure it doesn't pinch.

After that install the fuel tank and exhaust, run the engine and make sure all leaks are gone.
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Dale Porter
1995 ST1100 ABS/TCS  :bl11

Past bikes: GPX-250 -> CBR-600F2 -> CBR-954RR -> VTR-1000
 
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Offline ruSTynutz

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Re: Leaking oil.... The saga continues.
« Reply #12 on: February 23, 2022, 04:52:51 PM »
Good-o!  :thumbs
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Offline DaleAP

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Re: Leaking oil.... The saga continues.
« Reply #13 on: February 23, 2022, 05:15:07 PM »
I spoke too soon. This bike does not want to get back on the road!

I was tightening the last bolt, and it was no-where near as tight as the others but the alternator casing ended up cracking. Lots of swearing resulted!  :cuss  :||||

Guess I'll be taking the swingarm out and doing the upgrade after all.
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Dale Porter
1995 ST1100 ABS/TCS  :bl11

Past bikes: GPX-250 -> CBR-600F2 -> CBR-954RR -> VTR-1000
 

Offline ruSTynutz

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Re: Leaking oil.... The saga continues.
« Reply #14 on: February 23, 2022, 06:51:07 PM »
Bugger!!!  :fp
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Offline Brock

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Re: Leaking oil.... The saga continues.
« Reply #15 on: February 24, 2022, 11:15:43 AM »
I'm thinking super glue and gaffa tape aint gonna fix that..

There may ba an aluminium welder around near you that could repair that.. (Depending on the quality of the alloy)
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Brock
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