alternator seals 2000 1500se


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johnfliesagain
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alternator seals 2000 1500se

Postby johnfliesagain » Tue May 10, 2016 5:17 pm



Well I am still learning and did my best for searching....

I have an oil leak and>>>
It appears as if my alternator is wet with oil. Am I correct that since it is wet it should not be the shifeter seal?

I have the Honda shop manual and have read pages 17-10 Removal and 17-11 disassembly. That page shows special tool, Universal Holder.

So now the questions
The parts diagram on 17-16 shows as if I can get to the "Oil Seal" under the coupler with out too much disassembly,( and 15 pieces dropping quickly on the floor!)
Is that true?

Do I really need the universal holder or is there an equivalent?

With out taking it apart should I pre-order the rubber damper and just plan on replacing it? 53,xxx miles , and as a 2000, 16 years old. I would suspect that it is not hard to do, correct?

Any help is always welcomed!

Thanks, John in Baltimroe


John in Baltimore
A proud owner of a 2000 1500SE
:D Did I mention it was a Free Gift from a co-worker?

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keithg64
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Re: alternator seals 2000 1500se

Postby keithg64 » Tue May 10, 2016 9:04 pm

You do not need any special tools to remove the alternator. Disconnect the negative battery cable first. Disconnect the cable on the alternator. Unbolt it and pull it out. The oring will be on the alternator. I would replace the rubber dampers while your there.
It's not what you buy, it's what you build.

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johnfliesagain
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Hitachi vs Factory alternator seals 2000 1500se

Postby johnfliesagain » Sat Jun 04, 2016 3:46 pm

O K got the alternator out and now I discover, after preordering O ring and seal and dampners, the the alternator is a COMPUFIRE HD-1325 P/N 001-58100

So I am sure the O ring will fit, but the inner oil seal? is it the same one as used on a factory alternator I guess compufire is closed today or I would give them a call.

The windings are all oil covered, which led me to believe that it is the inner oil seal. And the darned flange is held in place with a metric hex ( which I have) but doesn't want to break loose. Perhaps RED Loctite?

Does this mean I should just buy a new one ? Or should I keep plugging agwayhoping that I won't break the inpeller flange and get the hex out and that the seal will fit?

suggestions?

John in Baltimore
Last edited by johnfliesagain on Sat Jun 04, 2016 7:14 pm, edited 1 time in total.
John in Baltimore
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:D Did I mention it was a Free Gift from a co-worker?

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Mh434
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Re: alternator seals 2000 1500se

Postby Mh434 » Sat Jun 04, 2016 6:16 pm

Hmmm - I have an aftermarket alternator, and did read that the O-rings supplied can leak, as they're not metric-sized, and might fit a bit small. In my case, the original Honda O-ring was still in excellent shape, so I re-used it, and haven't had any leak problems.

I wonder if changing to a genuine (metric) Honda O-ring might solve your problem?

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johnfliesagain
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Re: alternator seals 2000 1500se

Postby johnfliesagain » Sat Jun 04, 2016 7:00 pm

O K I am thinking about this a lot trying to logically work it out....
Again it is a Compufire alternator, not factory!

First a photo showing the exterior of the case and the windings on the inside covered with oil. The windings shown here are at the backside (rear) near the regulator connector.



Next a photo showing the fan/impeller but the shaft here looks clean....and I cannot get the hex allen screw to break loose so I can check behind it. So would that then mean that the oil seal is good and it is just the o ring that is bad causing a leak and a lot of blowing oil?


And of course how do I clean those windings Do I take it apart from the rear side, and what to clean it with? Brake claen would surely clean it, but also might melt the shellac on the windings. I don't want a smoking burning bike I do want a " smokin bike"


It appears as if there is an additional flange on the back side of the alternator that is designed for a bolt to secure the alternator in a differnet mount. Can't I just grind it off... would make the install so much easier?

John in Baltimore
Last edited by johnfliesagain on Sat Jun 04, 2016 7:10 pm, edited 1 time in total.
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:D Did I mention it was a Free Gift from a co-worker?

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MikeB
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Re: Hitachi vs Factory alternator seals 2000 1500se

Postby MikeB » Sat Jun 04, 2016 7:03 pm

johnfliesagain wrote:... And the darned flange is held in palce with a metric hex ( which I have) but doesn't want to break loose. Perhaps RED Loctite?

suggestions?

John in Baltimore

My suggestion is to use an air impact driver like you would use for automotive lugs. I've used one on a stock alternator before and I have also used it on the fork lower tubes to break that bolt loose. It works very well on the forks.
MikeB
Tacoma, WA, USA

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MikeB
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Re: alternator seals 2000 1500se

Postby MikeB » Sat Jun 04, 2016 7:10 pm

johnfliesagain wrote:And of course how do I clean those windings I don't want a smoking burning bike well I do want a " smokin bike"


You can the CRC spray electronic contact cleaner in the alternator to get rid of the oil. It is made for electronics, it works well and it evaporates quickly.


johnfliesagain wrote:It appears as if there is an additional flange on the back side of the alternator that is designed for a bolt to ssecure the alternator in a differnet mount. Can't I just grind it off... would make the install so much easier?

John in Baltimore

No, it means that the shaft oil seal is bad. Oil is getting past the seal and going into the alternator. If it were the O-ring, there would not be oil on the externals of the alternator and not the internals.
MikeB
Tacoma, WA, USA

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johnfliesagain
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Re: alternator seals 2000 1500se

Postby johnfliesagain » Sat Jun 04, 2016 7:26 pm

MikeB wrote:No, it means that the shaft oil seal is bad. Oil is getting past the seal and going into the alternator. If it were the O-ring, there would (not) be oil on the externals of the alternator and not the internals.

So Mike B then the question is : is the stock shaft seal the correct one for the Compufire one ?

John in Baltimore
John in Baltimore
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:D Did I mention it was a Free Gift from a co-worker?

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MikeB
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Re: alternator seals 2000 1500se

Postby MikeB » Sat Jun 04, 2016 7:51 pm

johnfliesagain wrote:It appears as if there is an additional flange on the back side of the alternator that is designed for a bolt to secure the alternator in a differnet mount. Can't I just grind it off... would make the install so much easier?

John in Baltimore

Yes, you can cut off that additional flange.
MikeB
Tacoma, WA, USA

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MikeB
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Re: alternator seals 2000 1500se

Postby MikeB » Sat Jun 04, 2016 8:02 pm

johnfliesagain wrote: So Mike B then the question is : is the stock shaft seal the correct one for the Compufire one ?

John in Baltimore

Yes, the seal is the same. I see you have an OEM seal. Most likely part number 31104-MN5-005.

You should be able to use that one. Or go to your bearing supply house and buy a SKF 9879 seal. The rubber material of the seal is Viton. Viton will withstand the heat and oil that it is subjected to. The OEM seal should be Viton as well. A Nitrile Rubber seal will not take the punishment and will leak in short order.

I am sure that either seal will work for you.
MikeB
Tacoma, WA, USA

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johnfliesagain
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Picture of one of my Triples Yamaha xs750 '79 at Timonium Bike Show 2015

Re: alternator seals 2000 1500se

Postby johnfliesagain » Sat Jun 04, 2016 8:39 pm

Yup. the Honda part is the one I ordered from Partzilla. And the stock oil seal ans the rubbers.

And I found a neat video on Compufire disassembly:

From YouTube:




Now the guy got some electrics wrong but he noted that, and it shows step by step disassembly. Except of course , the oil seal that I want to replace. But it is good for cleaning.

John in Baltimore
John in Baltimore
A proud owner of a 2000 1500SE
:D Did I mention it was a Free Gift from a co-worker?

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johnfliesagain
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Yamaha 79 XS750; 80 XS850
Picture of one of my Triples Yamaha xs750 '79 at Timonium Bike Show 2015

Re: alternator seals 2000 1500se

Postby johnfliesagain » Sat Jun 04, 2016 8:46 pm

MikeB wrote:Yes, you can cut off that additional flange.



Yes! Wonderful!
John in Baltimore
A proud owner of a 2000 1500SE
:D Did I mention it was a Free Gift from a co-worker?

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MikeB
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Re: alternator seals 2000 1500se

Postby MikeB » Sat Jun 04, 2016 8:47 pm

Yes, I've seen that video a couple of times.


MikeB
Tacoma, WA, USA


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