1150GSA - voltage regulator?

[Nantywenynen]

Hi all,

Apologies....I'm rotten at electrics so forgive the dumb question but - my '05 1150GSA has decided to intermittently stop charging. Does this mean a dodgy alternator or might fitting a new voltage regulator fix the issue?

Many thanks,

Bert

 

[squibb34]

Have you checked the condition of the alternator body, brushes or the drive belt? There were 2 options it seems: -

.......... https://www.realoem.com/bmw/enUS/partgrp?id=0415-EUR-03-1999-R21-BMW-R_1150_GS_00_0415,0495_&mg=12

IIRC, Steptoe did a 'sticky' a while back, so just check the oilheads section.

 

[Nantywenynen]

Many thanks - I'll investigate...might be brushes...or am hoping so..... Will look for Steptoe's sticky. Bit of a Luddite on tech.

 

[Paul Young]

Mine stopped charging recently, so I stripped the alternator out from the top of the engine.

Brushes are integral with the reg/rec on the top/back of the casing and mine were still really good, so I checked continuity in the 3 sets of windings on the outer coils and the inner windings between the two slip rings. All were good so I cleaned up the contacts and mounting points before refitting and testing it. All worked perfectly, so I suspect the earthing was intermittent.

I hope yours is as straightforward…

 

[adventuredon]

£75 second hand from Motorworks for alternator, £30 for volt reg new or £26 econd hand one. FYI

 

[Nantywenynen]

Thanks Paul. V helpful. I'm leaning toward it being something as straightforward - going to spend my weekend investigating. On we go.....!

 

[Nantywenynen]

£75 second hand from Motorworks for alternator, £30 for volt reg new or £26 econd hand one. FYI

Again - another very handy bit of guidance. Thanks v much indeed.

 

[Steptoe]

Check the single blue wire that attaches to the alternator, I’ve seen a few badly corroded with any wire barely left

 

[Nantywenynen]

Check the single blue wire that attaches to the alternator, I’ve seen a few badly corroded with any wire barely left

Will do. Thanks v much