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Bridge Rectifier Replacement [message #285554]

Fri, 21 August 2015 21:14

bryhart

Messages: 90
Registered: July 2015
Location: Salem, OR

Karma: 0

Member

So I got the new replacement bridge rectifier from Applied. As I had read the terminals don't match the direction of the OE part. What I can't find is the technique for solving that problem...

Do I:
1. Try and modify/twist the 3 terminals on the new rectifier 90 degrees?
2. Try and modify the white plastic plug housing?
3. Discard the white housing and wire directly to the new rectifier?
4. Something else?

I searched but couldn't find an actual link to a thread or pictures of the modification needed.

Thanks in advance

--Bryan

1977 Palm Beach

[Updated on: Fri, 21 August 2015 23:07]

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Re: Bridge Rectifier Replacement [message #285556 is a reply to message #285554]

Fri, 21 August 2015 21:32

A Hamilto

Messages: 4508
Registered: April 2011

Karma: 39

Senior Member

bryhart wrote on Fri, 21 August 2015 21:14

So I got the new replacement bridge rectifier from Allied. As I had read the terminals don't match the direction of the OE part. What I can't find is the technique for solving that problem...

Do I:
1. Try and modify/twist the 3 terminals on the new rectifier 90 degrees?
2. Try and modify the white plastic plug housing?
3. Discard the white housing and wire directly to the new rectifier?
4. Something else?

I searched but couldn't find an actual link to a thread or pictures of the modification needed.

Thanks in advance

--Bryan

As near as I can tell, you twist the terminals 90 degrees with a pair of pliers.

And there is a thread where it was stated that the only polarity marking was a "-" instead of a "+". No problem, the "-" goes to the opposite corner from the "+".

http://www.gmcmhphotos.com/photos/data/10/medium/Onan_6kW_End_Bell_Wiring.jpg

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Re: [GMCnet] Bridge Rectifier Replacement [message #285560 is a reply to message #285556]

Fri, 21 August 2015 21:36

ljdavick

Messages: 3548
Registered: March 2007
Location: Fremont, CA

Karma: -3

Senior Member

I made four very short jumpers to connect between the bridge rectifier and the socket.

Larry Davick

> On Aug 21, 2015, at 7:32 PM, A. wrote:
>
> bryhart wrote on Fri, 21 August 2015 21:14
>> So I got the new replacement bridge rectifier from Allied. As I had read the terminals don't match the direction of the OE part. What I can't find
>> is the technique for solving that problem...
>>
>> Do I:
>> 1. Try and modify/twist the 3 terminals on the new rectifier 90 degrees?
>> 2. Try and modify the white plastic plug housing?
>> 3. Discard the white housing and wire directly to the new rectifier?
>> 4. Something else?
>>
>> I searched but couldn't find an actual link to a thread or pictures of the modification needed.
>>
>> Thanks in advance
>>
>> --Bryan
> As near as I can tell, you twist the terminals 90 degrees with a pair of pliers.
>
> And there is a thread where it was stated that the only polarity marking was a "-" instead of a "+". No problem, the "-" goes to the opposite corner
> from the "+".
> http://www.gmcmhphotos.com/photos/data/10/medium/Onan_6kW_End_Bell_Wiring.jpg
> --
> '73 23' Sequoia For Sale
> '73 23' CanyonLands For Sale
> Upper Alabama
> There will always be a demand for scapegoats. The job sucks, but the work is steady.
>
> _______________________________________________
> GMCnet mailing list
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy

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Re: Bridge Rectifier Replacement [message #285562 is a reply to message #285554]

Fri, 21 August 2015 21:57

A Hamilto

Messages: 4508
Registered: April 2011

Karma: 39

Senior Member

bryhart wrote on Fri, 21 August 2015 21:14

So I got the new replacement bridge rectifier from Allied. As I had read the terminals don't match the direction of the OE part. What I can't find is the technique for solving that problem...

Do I:
1. Try and modify/twist the 3 terminals on the new rectifier 90 degrees?
2. Try and modify the white plastic plug housing?
3. Discard the white housing and wire directly to the new rectifier?
4. Something else?

I searched but couldn't find an actual link to a thread or pictures of the modification needed.

Thanks in advance

--Bryan

http://www.gmcmhphotos.com/photos/onan/p17103.html

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Re: Bridge Rectifier Replacement [message #285564 is a reply to message #285554]

Fri, 21 August 2015 22:12

bryhart

Messages: 90
Registered: July 2015
Location: Salem, OR

Karma: 0

Member

Thanks Guys. I bent them 90 degrees but it was pretty hard to get them to line up. While continuing to "tweak" the posts it felt like they were getting weak. I think I am going to go the same route as Larry and make some jumpers.

Thanks again.

1977 Palm Beach

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Re: [GMCnet] Bridge Rectifier Replacement [message #285575 is a reply to message #285564]

Sat, 22 August 2015 04:06

Mr ERFisher

Messages: 7117
Registered: August 2005

Karma: 2

Senior Member

Read here
http://gmcmotorhome.info/generator.html#bridge

On Friday, August 21, 2015, Bryan Hartman wrote:

> Thanks Guys. I bent them 90 degrees but it was pretty hard to get them to
> line up. While continuing to "tweak" the posts it felt like they were
> getting weak. I think I am going to go the same route as Larry and make
> some jumpers.
>
> Thanks again.
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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Re: Bridge Rectifier Replacement [message #285582 is a reply to message #285554]

Sat, 22 August 2015 09:48

bryhart

Messages: 90
Registered: July 2015
Location: Salem, OR

Karma: 0

Member

Thanks Gene.

Well Gentlemen,

I have some good news and some bad news...

Bad news = I did in fact snap off one of the terminals on the new bridge rectifier Mad

Mad

Mad

Mad

Mad

Mad

Good news = I rigged up some jumpers and soldered a wire to the stump of the broken terminal just to test the theory that the original rectifier was bad...I HAVE POWER!!!!!! Surprised

Surprised

Surprised

Surprised

I obviously want to get another bridge rectifier that doesn't have a snapped terminal. Here are the questions.

REPLACEMENT PART:
Is there any reason to but the $16.95 item from Applied?
http://www.appliedgmc.com/prod.itml/icOid/974

When I search for the # (KBPC3508) I find on much cheaper for $5.22...Are these the same?
http://www.alliedelec.com/hvca-kbpc3508/70016006/

THe "HowTo" on the gmcmotorhome.info references another # (KBPC3510) which is even cheaper for $3.84...Is this one ok?
http://www.alliedelec.com/hvca-kbpc3510/70016007/

TECHNIQUE:
Does anyone have any ideas how I can twist the terminals more accurately/safely so they line up the first time? I would prefer to not pull the existing white plastic housing...maybe make my own template?

QUANTITY:
How often do these things "burn out"? How many should I order?

Thanks,
--Bryan

1977 Palm Beach

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Re: [GMCnet] Bridge Rectifier Replacement [message #285584 is a reply to message #285582]

Sat, 22 August 2015 10:21

emerystora

Messages: 4442
Registered: January 2004

Karma: 13

Senior Member

> On Aug 22, 2015, at 8:48 AM, Bryan Hartman
>
> QUANTITY:
> How often do these things "burn out"? How many should I order?

Well, let's see ---- your motor home is about 40 years old. The quantity you order depends on how long you plan to live. If you feel that you are going to live another 80 years you might want to order two of them.

However if your replacement is a higher voltage rating than your original it should last even
longer.

I burned one out about 20 years ago. So I'm glad I didn't buy any spares.

The accepted wisdom is that they will burn out if you shut off the Onan while you have a load on it such as a running air conditioner.

I'm my case I installed an Onan switch by by dash so I can start the Onan while driving down the road. That way I can keep the air conditioner turned on and get cooling just by starting my Onan. I have done this many times but have not burned the bridge rectifier

Perhaps because I had installed a 1000 volt rated one when the original went bad.

I don't do this much anymore since I installed the aux. evaporator fort dash air.

So, I would suggest that you really don't have to carry a spare. They are easy to find at Radio Shack or other electronic parts shops if you are in a hurry.

Emery Stora
77 Kingsley
Frederick, CO
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Re: Bridge Rectifier Replacement [message #285585 is a reply to message #285582]

Sat, 22 August 2015 10:57

A Hamilto

Messages: 4508
Registered: April 2011

Karma: 39

Senior Member

bryhart wrote on Sat, 22 August 2015 09:48

...Here are the questions.
REPLACEMENT PART:
Is there any reason to but the $16.95 item from Applied?
http://www.appliedgmc.com/prod.itml/icOid/974

When I search for the # (KBPC3508) I find on much cheaper for $5.22...Are these the same?
http://www.alliedelec.com/hvca-kbpc3508/70016006/

THe "HowTo" on the gmcmotorhome.info references another # (KBPC3510) which is even cheaper for $3.84...Is this one ok?
http://www.alliedelec.com/hvca-kbpc3510/70016007/

TECHNIQUE:
Does anyone have any ideas how I can twist the terminals more accurately/safely so they line up the first time? I would prefer to not pull the existing white plastic housing...maybe make my own template?

QUANTITY:
How often do these things "burn out"? How many should I order?

You can buy the cheaper one with confidence.
FWIW, I have found pictures of a KBPC5010 on the net that shows the pins oriented the same as the OEM Onan socket. I have also found pictures of the KBPC5010 with the pins the same as everything else that doesn't fit. I don't know if the dimensions are correct even if the pin orientation is...
No idea for twisting the terminals more accurately.
The replacement part numbers have a higher current tolerance and don't burn out as often as OEM. If that helps your spare stock question.

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Re: Bridge Rectifier Replacement [message #285586 is a reply to message #285554]

Sat, 22 August 2015 10:58

bryhart

Messages: 90
Registered: July 2015
Location: Salem, OR

Karma: 0

Member

Thanks Emery.

So if I can source one locally no need for spare. If I have to order them I will order an extra in case I butcher another one trying to twist terminals.

1977 Palm Beach

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Re: [GMCnet] Bridge Rectifier Replacement [message #285587 is a reply to message #285582]

Sat, 22 August 2015 10:58

bdub

Messages: 1578
Registered: February 2004
Location: Central Texas

Karma: 5

Senior Member

Congratulations on getting the Onan running! I was almost positive that
was what the problem was. Silver lining is that you got a nice Honda
generator as a bonus. :-) You can get a pretty penny for that if you
choose. Hope the drive back from Texas to Oregon wasn't too awfully hot.

btw, did you get the dash air working? I never heard.

Scott is on the way back from Iowa with his "new" Center Kitchen Royale.

bdub

On Sat, Aug 22, 2015 at 8:48 AM, Bryan Hartman wrote:

> Thanks Gene.
>
> Well Gentlemen,
>
> I have some good news and some bad news...
>
> Bad news = I did in fact snap off one of the terminals on the new bridge
> rectifier :x :x :x :x :x
> Good news = I rigged up some jumpers and soldered a wire to the stump of
> the broken terminal just to test the theory that the original rectifier was
> bad...I HAVE POWER!!!!!! :o :o :o
>
> I obviously want to get another bridge rectifier that doesn't have a
> snapped terminal. Here are the questions.
>
> REPLACEMENT PART:
> Is there any reason to but the $16.95 item from Applied?
> http://www.appliedgmc.com/prod.itml/icOid/974
>
> When I search for the # (KBPC3508) I find on much cheaper for $5.22...Are
> these the same?
> http://www.alliedelec.com/hvca-kbpc3508/70016006/
>
> THe "HowTo" on the gmcmotorhome.info references another # (KBPC3510)
> which is even cheaper for $3.84...Is this one ok?
> http://www.alliedelec.com/hvca-kbpc3510/70016007/
>
>
> TECHNIQUE:
> Does anyone have any ideas how I can twist the terminals more
> accurately/safely so they line up the first time? I would prefer to not
> pull the
> existing white plastic housing...maybe make my own template?
>
> QUANTITY:
> How often do these things "burn out"? How many should I order?
>
> Thanks,
> --Bryan
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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bdub
'76 Palm Beach/Central Texas
www.bdub.net
www.gmcmhphotos.com
www.gmcmotorhomemarketplace.com
www.gmcmhregistry.com
www.facebook.com/groups/classicgmcmotorhomes
www.facebook.com/groups/gmcmm

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Re: [GMCnet] Bridge Rectifier Replacement [message #285588 is a reply to message #285586]

Sat, 22 August 2015 11:09

bdub

Messages: 1578
Registered: February 2004
Location: Central Texas

Karma: 5

Senior Member

They're cheap so get an extra or two. Go ahead and configure them for
installation.
You'll be able to help another GMCer one day and it'll make you both feel
good!

:-)
bdub

On Sat, Aug 22, 2015 at 9:58 AM, Bryan Hartman wrote:

> Thanks Emery.
>
> So if I can source one locally no need for spare. If I have to order them
> I will order an extra in case I butcher another one trying to twist
> terminals.
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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bdub
'76 Palm Beach/Central Texas
www.bdub.net
www.gmcmhphotos.com
www.gmcmotorhomemarketplace.com
www.gmcmhregistry.com
www.facebook.com/groups/classicgmcmotorhomes
www.facebook.com/groups/gmcmm

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Re: [GMCnet] Bridge Rectifier Replacement [message #285589 is a reply to message #285560]

Sat, 22 August 2015 11:05

<rallymaster

Messages: 361
Registered: May 2014

Karma: 2

Senior Member

I haven't seen an open Radio Shack in months.
Are there any left?

RonC

On Sat, 22 Aug 2015 09:21:16 -0600 Emery Stora
writes:

> So, I would suggest that you really don't have to carry a spare.
> They are easy to find at Radio Shack or other electronic parts shops
> if you are in a hurry.
>
> Emery Stora
> 77 Kingsley
> Frederick, CO
> _______________________________________________
> Ron & Linda Clark
North Plains, ORYGUN
78 Eleganza II

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Re: [GMCnet] Bridge Rectifier Replacement [message #285590 is a reply to message #285588]

Sat, 22 August 2015 11:16

ljdavick

Messages: 3548
Registered: March 2007
Location: Fremont, CA

Karma: -3

Senior Member

My four little jumper wires have been working for a few years now. I bought 4 or 5 because they were so cheap and promptly twisted off one of the terminals, just like you.

Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, CA

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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy

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Re: [GMCnet] Bridge Rectifier Replacement [message #285592 is a reply to message #285587]

Sat, 22 August 2015 11:36

bryhart

Messages: 90
Registered: July 2015
Location: Salem, OR

Karma: 0

Member

Thanks. The drive back was fantastic. As far as the dash air, the local shop in the Woodlands was trying to charge me too much for crappy reman parts. I ran out of time and had to leave. I will order up the right stuff and teach myself how to do A/C (with the help of you guys of course). Other than that the coach ran great and it was only truly uncomfortable when we we driving through 100+ degree temp from about 2-5 in the afternoon. It may have been an ill advised adventure to take a 40 year old vehicle cross country in the middle of August during a record setting heat wave...but life is short. The "on-the-job-training" I received was invaluable.

bdub wrote on Sat, 22 August 2015 08:58

Congratulations on getting the Onan running! I was almost positive that
was what the problem was. Silver lining is that you got a nice Honda
generator as a bonus. You can get a pretty penny for that if you
choose. Hope the drive back from Texas to Oregon wasn't too awfully hot.

btw, did you get the dash air working? I never heard.

Scott is on the way back from Iowa with his "new" Center Kitchen Royale.

bdub

1977 Palm Beach

[Updated on: Sat, 22 August 2015 11:41]

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Re: [GMCnet] Bridge Rectifier Replacement [message #285593 is a reply to message #285590]

Sat, 22 August 2015 11:40

bryhart

Messages: 90
Registered: July 2015
Location: Salem, OR

Karma: 0

Member

Larry,

How did you reinstall? Did you somehow figure out how to stuff the jumpers back into the plastic housing and remount with the screw? Did you dispose of the plastic housing and just remove the wires from plastic? Is the new rectifier just dangling in there?

Thanks,
--Bryan

ljdavick wrote on Sat, 22 August 2015 09:16

My four little jumper wires have been working for a few years now. I bought 4 or 5 because they were so cheap and promptly twisted off one of the terminals, just like you.

Larry Davick

1977 Palm Beach

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Re: [GMCnet] Bridge Rectifier Replacement [message #285594 is a reply to message #285589]

Sat, 22 August 2015 11:55

Daniel Starks

Messages: 20
Registered: April 2015

Karma: 0

Junior Member

Lots are still open. See Radio Shack on internet for locations.

Daniel

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of
rallymaster@juno.com
Sent: Saturday, August 22, 2015 10:05 AM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Bridge Rectifier Replacement

I haven't seen an open Radio Shack in months.
Are there any left?

RonC

On Sat, 22 Aug 2015 09:21:16 -0600 Emery Stora
writes:

> So, I would suggest that you really don't have to carry a spare.
> They are easy to find at Radio Shack or other electronic parts shops
> if you are in a hurry.
>
> Emery Stora
> 77 Kingsley
> Frederick, CO
> _______________________________________________
> Ron & Linda Clark
North Plains, ORYGUN
78 Eleganza II

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Re: [GMCnet] Bridge Rectifier Replacement [message #285596 is a reply to message #285589]

Sat, 22 August 2015 12:26

emerystora

Messages: 4442
Registered: January 2004

Karma: 13

Senior Member

Yes.

Emery Stora

> On Aug 22, 2015, at 10:05 AM, rallymaster@juno.com wrote:
>
> I haven't seen an open Radio Shack in months.
> Are there any left?
>
> RonC
>
> On Sat, 22 Aug 2015 09:21:16 -0600 Emery Stora
> writes:
>
>> So, I would suggest that you really don't have to carry a spare.
>> They are easy to find at Radio Shack or other electronic parts shops
>> if you are in a hurry.
>>
>> Emery Stora
>> 77 Kingsley
>> Frederick, CO
>> _______________________________________________
>> Ron & Linda Clark
> North Plains, ORYGUN
> 78 Eleganza II
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Re: Bridge Rectifier Replacement [message #285606 is a reply to message #285554]

Sat, 22 August 2015 15:38

JohnL455

Messages: 4447
Registered: October 2006
Location: Woodstock, IL

Karma: 12

Senior Member

You don't twist the terminals. You de-pin the plastic socket and drill out the terminal holder holes. You push the terminals on to the rectifier by slightly extending them through the old socket. The plastic part then serves to just keep things separated and safe and rectifier mounted.

John Lebetski
Woodstock, IL
77 Eleganza II

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Re: Bridge Rectifier Replacement [message #285610 is a reply to message #285606]

Sat, 22 August 2015 15:45

A Hamilto

Messages: 4508
Registered: April 2011

Karma: 39

Senior Member

JohnL455 wrote on Sat, 22 August 2015 15:38

You don't twist the terminals. You de-pin the plastic socket and drill out the terminal holder holes. You push the terminals on to the rectifier by slightly extending them through the old socket. The plastic part then serves to just keep things separated and safe and rectifier mounted.

I thought of something like that, but maybe using hot glue to re-orient the terminals in the holes in the socket.

I also tried to do an internet search for a socket that would work with the new pin orientation but no luck with that. Maybe the electronic professionals here know where to look.

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