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Message |
    
mipak
New member
Username: mipak
Post Number: 1
Registered: 04-2008
| | Posted on Thursday, April 10, 2008 - 01:23 pm: | 
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i have a 21 foot cruiser, driven by a volvo diesel penta 2 cylinder 25 to 28 hp engine. she has been laid up since oct 04 but will be re-launched tomorrow, 11th april.
most of the wiring was re-done, checked and re-checked, new batteries etc. and the engine runs just fine ... no problems there.
however, the red charging light remains on after start-up when it should go out.
under the dashboard, there are 2 metal covered boxes.
one, the charging regulator (i think) has 5 terminals plus earth ... 30h, b+/30, 50, df, d+/61.
the other box (don't know what it is or does) has 3 active terminals plus earth positioned at the 4 corners ... d+ which goes to d+/61 on the reg, unknown to df on the reg, unknown to b+/30 on the reg.
the dynastart has 3 terminals plus earth ... 30h, df, d+.
the charging and associated circuits have all been re-checked but the light still stays on with the engine running.
i have cleaned the relay switches inside the 2 boxes to remove any corrosion/oxidisation but haven't tried to run it since then.
it has to be either an error in my re-wiring or what is meant to do the charging is faulty ... although i find that hard to believe.
i have done away with the original 3 terminal ignition key switch plus starter button and replaced it with a 4 terminal key switch which includes the starter ... marked batt, ign, st and acc.
sorry this has been so long-winded but i would seriously appreciate any help to get this red charging light to work as it should.
my thanks in advance ...
michael. |
adsum
New member
Username: adsum
Post Number: 2
Registered: 01-2008
| | Posted on Wednesday, April 16, 2008 - 05:11 pm: |
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The description of "the other box" looks like a relay. The original Bosch charging regulator has a built in relay. It could be replaced by a modern regulator with seperate relay. I have the charging light directly (no relay) connected between terminal 61 of the original regulator and terminal 75 of the starter key switch (75 = cigarette lighter/radio but terminal 15 acts the same). When the engine is idling the light remains on but when RPM increases over 900 the light shuts off and the charging current is OK. |
Tavi Arlev
Visitor
| | Posted on Thursday, September 17, 2009 - 04:40 pm: |
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Could anyone help guide me to engine and transmission assembly illustrations for an MD2B?...
I have a 1976 Dufour 31 and need to know how the original installation was done.
Thank you |
ernie
Senior Member
Username: ernie
Post Number: 1042
Registered: 01-2002
| | Posted on Friday, September 18, 2009 - 07:31 am: |
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You can find digital manuals on the Volvo Penta web page using your serial and model number
Hope this helps
Ernie |
or209
New member
Username: or209
Post Number: 1
Registered: 12-2009
| | Posted on Friday, December 04, 2009 - 03:18 am: |
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I have a volvo penta MD2B and have just rebuilt the top end . can anyone tell me the valve gap for this motor. It is in an eastcoast 31 |
adsum
Member
Username: adsum
Post Number: 9
Registered: 01-2008
| | Posted on Friday, December 04, 2009 - 06:05 am: |
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Inlet 0.3 mm (0.012")
Exhaust 0.35 mm (0.014")
Decompression device max. depression of exhaust valve 0.5 mm (0.02")
I'll sent the manual by e-mail |
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