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Re: Rectifier issue? [Re: GPC1203] #579624
04/06/19 02:19 PM
04/06/19 02:19 PM
Joined: Aug 2013
Posts: 1,362
Cheshire, UK
nippymog Offline
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nippymog  Offline
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Joined: Aug 2013
Posts: 1,362
Cheshire, UK
Due to repeated bobbin failure , I have had my CE unit hard bolted to the mounting plate for about 4 years with no problem.
I simply substituted the bobbins for bolts, with spacers to make it stand away from the plate surface.

Re: Rectifier issue? [Re: nippymog] #579757
05/06/19 09:12 AM
05/06/19 09:12 AM
Joined: Dec 2018
Posts: 31
G
GPC1203 Offline OP
Just Getting Started
GPC1203  Offline OP
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Joined: Dec 2018
Posts: 31
Originally Posted By nippymog
Due to repeated bobbin failure , I have had my CE unit hard bolted to the mounting plate for about 4 years with no problem.
I simply substituted the bobbins for bolts, with spacers to make it stand away from the plate surface.


Fantastic. That gives me reassurance! What type of spacers did you use?


Norwalk, CT, USA

'12 Morgan 3 Wheeler #401
‘15 Jeep Wrangler Sahara
'17 Triumph Bonneville T120 Black
Re: Rectifier issue? [Re: GPC1203] #579760
05/06/19 09:35 AM
05/06/19 09:35 AM
Joined: Aug 2013
Posts: 1,362
Cheshire, UK
nippymog Offline
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Posts: 1,362
Cheshire, UK
Originally Posted By GPC1203

Fantastic. That gives me reassurance! What type of spacers did you use?


Simple cylinders of aluminium approx half the length of the original bobbin , drilled clearance size for the bolt. I am sure a few washers would achieve the same effect , but be harder to assemble and not be as elegant.
Similar to this : https://www.ebay.co.uk/itm/M6-x-18mm-OD-Aluminium-Spacer-Standoff-Stand-Off-Collars-Spacers-Bar-Turned/271655485504?var=570488342701&hash=item3f3fedc040:m:m4IQDm792HPvwFm4mM-pDQw&frcectupt=true

Last edited by nippymog; 05/06/19 01:05 PM.
Re: Rectifier issue? [Re: nippymog] #580534
09/06/19 12:07 PM
09/06/19 12:07 PM
Joined: Dec 2018
Posts: 31
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GPC1203 Offline OP
Just Getting Started
GPC1203  Offline OP
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Joined: Dec 2018
Posts: 31
Thank you for the tip! I’ll try this out if and when my bobbins fail. My new rectifier is on now and it was a pain to put on so I’m hoping I won’t have to mess with it again for some time now.

Thanks all for the help!


Norwalk, CT, USA

'12 Morgan 3 Wheeler #401
‘15 Jeep Wrangler Sahara
'17 Triumph Bonneville T120 Black
Re: Rectifier issue? [Re: GPC1203] #590322
17/08/19 12:00 PM
17/08/19 12:00 PM
Joined: May 2019
Posts: 47
Berlin, Germany
thono Offline
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thono  Offline
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Joined: May 2019
Posts: 47
Berlin, Germany
similar problem here now - so I measured the voltage coming from the generator. There we three phases , two of them has around 20Volts against ground, one has 5 V - ist that normal? or do I have an generator issue ?

Thanks Thorsten

Re: Rectifier issue? [Re: GPC1203] #590326
17/08/19 12:22 PM
17/08/19 12:22 PM
Joined: May 2019
Posts: 47
Berlin, Germany
thono Offline
Just Getting Started
thono  Offline
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Joined: May 2019
Posts: 47
Berlin, Germany
uups sorry my mistake - it was wrong to measure against ground ...

To verify a 3 phase stator : (phase 1,2,3)

1.) verify that phase 1,2,3 has no connection to ground

2.) verify that 1-2, 2-3, 1-3 has the same resistance (0,04 Ohm in my case)

3.) run the engine, rectifier unplugged and verify that: 1-2, 2-3, 1-3 has the same voltage, in my case around 18V when idling

so my stator is o.k. - seems I need a new rectifier following the hints before - Thanks!

Re: Rectifier issue? [Re: GPC1203] #590343
17/08/19 01:55 PM
17/08/19 01:55 PM
Joined: Jan 2014
Posts: 1,530
Berkshire, England
M
Mark H Offline
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Mark H  Offline
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Joined: Jan 2014
Posts: 1,530
Berkshire, England
Thono- The harley replacement is your way forward and far more reliable providing the connections are fully home and engaged and the long terminal lead ring is changed at the bulkhead connector end. Do not in line splice - run the full lead with the loom & connect at the bulkhead connector. Easier to change a rectifier than a generator.

The main harley connector is identical to the morgan one. Planenut has the master parts list for your replacement part number.
Good luck

Mark


Last edited by Mark H; 17/08/19 01:56 PM.
Re: Rectifier issue? [Re: GPC1203] #590395
17/08/19 06:35 PM
17/08/19 06:35 PM
Joined: May 2019
Posts: 47
Berlin, Germany
thono Offline
Just Getting Started
thono  Offline
Just Getting Started

Joined: May 2019
Posts: 47
Berlin, Germany
Hi Mark,

the new harley replacement rectifier is always ordered (69€ ;-) ) Made a testdrive today evening and found that sometimes the old rectifier ist charging - most of time not.

So it seems to be a loose connection ... however I will replace it and everything should be o.k - until the next problem ;-)

Re: Rectifier issue? [Re: GPC1203] #590400
17/08/19 07:04 PM
17/08/19 07:04 PM
Joined: Oct 2012
Posts: 2,347
Furry Boots City
RedThree Offline
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RedThree  Offline
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Joined: Oct 2012
Posts: 2,347
Furry Boots City
Could be a loose connection or poor earth but can also be short circuits along the +ve wire as the insulation breaks up.

Re: Rectifier issue? [Re: RedThree] #590409
17/08/19 08:14 PM
17/08/19 08:14 PM
Joined: Jun 2012
Posts: 1,313
United Kingdom, Lincolnshire
planenut Offline
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planenut  Offline
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Joined: Jun 2012
Posts: 1,313
United Kingdom, Lincolnshire

Check the 4 pin plug connection is good and not burnt out. The pins have been known to push back and have a high resistance that leads to heat and the plug melting. If the plug and/or socket has melted then the part numbers are in the alternative parts list here:

https://www.dropbox.com/s/cvo7sehb6o4q9la/Updated%20List%2011%20June%202019.pdf?dl=0

Top of Page 6.

Check the earth connection. The HD rectifier (74540-01) seems to be far more reliable than the standard CE 601 unit.

.

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