Noisy Bosch Alternator (Bearings)

Lone_Wolf · May 13, 2009

The alternator on my P38 4.6 Vogue is a bit noisy. No big deal I thought just get a new one. Then I find out that because my RR has the later "THOR" motor the alternator costs over £400 for a new one as opposed to approx £120 for a "GEMS" powered RR. I'm not impressed.
Has anyone changed the bearings in one of these?
Any suggestions for companies that rebuild them?

Thanks,

LW

gavbriggs · May 13, 2009

355 from famous 4x4, also try dls landrover in derbyshire, i have found the competative on price!

for changing the bearing, there should be a way, the bearing should be easy enough to source, theres a company in sheffield called city seals and bearings, they usually can find the bearing from the deatails on the bearing.

its always worth a try to repair things like this but be prepared for it all going tits up and you having to replace the alternator!

andy 0352 · May 13, 2009

any sort of auto electic company that does alternators should be able to repair it.

Datatek · May 13, 2009

Lone_Wolf said:
The alternator on my P38 4.6 Vogue is a bit noisy. No big deal I thought just get a new one. Then I find out that because my RR has the later "THOR" motor the alternator costs over £400 for a new one as opposed to approx £120 for a "GEMS" powered RR. I'm not impressed.
Has anyone changed the bearings in one of these?
Any suggestions for companies that rebuild them?

Thanks,

LW

I don't know your particular alternator, but I have done bearings on other Nippon Denso & Lucas alternators. Piece of cake. If you decide to have a go, put new brushes in at the same time as they are bound to be worn.

Irishrover · May 14, 2009

Locate a local bearing stockist from Yellow Pages, strip the alternator and armed with the numbers from the existing bearing(s) or the old bearing as a sample, get them from there. Always specify a reputable make as some of the cheaper bearings are Far East cr*p. You will find the bearing suppliers far cheaper than car spares suppliers and they are also a useful source of "O" rings, Oil Seals and Loctite type products.

Lone_Wolf · May 21, 2009

All sorted now thanks. Had the bearings in the alternator changed by these guys Universal - Specialist in Rotating Electrics :: Universal Starters and Alternators for £45. While I was at it I replaced the Serpentine belt as the old one was cracking up. That noise seems cured, though I'm still concerned that either the idler wheels or AC pump maybe a little noisy now. Time will tell.

Thanks for the replies. LW

Irishrover · May 21, 2009

If it's the idler bearing, don't buy a new idler-get a replacement bearing from a bearing supplier.

shabbs · Jul 13, 2009

Irishrover said:
If it's the idler bearing, don't buy a new idler-get a replacement bearing from a bearing supplier.

Can you direct me as to where the idler bearing sits, pictures would be great.

Appreciated.

andy 0352 · Jul 13, 2009

if it,s the thor engine there are 2 one either side and have a 13mm bolt holding them on,if they are the plastic ones change them for steel other wise like irish said just replace the bearing

gavbriggs · Jul 13, 2009

i have a noisy wife, can i replace the bearing in that or shall i just tell her to shut the fcuk up?

gemsdad · Jul 14, 2009

gavbriggs said:
i have a noisy wife, can i replace the bearing in that or shall i just tell her to shut the fcuk up?

the latter gav.

:

Beast o Bodmin · Jul 14, 2009

gavbriggs said:
i have a noisy wife, can i replace the bearing in that or shall i just tell her to shut the fcuk up?

UM im going to google your phone num,ber and tell her what u said u naughty boyo

gavbriggs · Jul 14, 2009

Beast o Bodmin said:
UM im going to google your phone num,ber and tell her what u said u naughty boyo

google away! she will not answer unsolicited calls, neither do i!! and who would she believe? her doting husband or some moron from a forum(not that youre a moron of course)

shabbs · Jul 14, 2009

andy 0352 said:
if it,s the thor engine there are 2 one either side and have a 13mm bolt holding them on,if they are the plastic ones change them for steel other wise like irish said just replace the bearing

It's a thor, do you mean either side of the alternator? Excuse the novice.

Irishrover · Jul 14, 2009

The TOR engine has an inlet manifold (Top of engine) which looks like two rows of sausages whereas the GEMS has a rectangular box, black on top, ribbed and either 4.0 or 4.6 cast into it.

shabbs · Jul 14, 2009

shabbs said:
It's a thor, do you mean wither side of the alternator? Excuse the novice.

It's a THOR, honest.

shabbs · Jul 14, 2009

Had another listen, it sounds like it's coming from the alternator.

shabbs · Mar 7, 2010

shabbs said:
Had another listen, it sounds like it's coming from the alternator.

Looking from the front, It is in fact the left side idler bearing that's noisy. Does anyone have the bearing details on this one?

Appreciated.

Willos · Mar 7, 2010

I think its only £12 rom Island 4x4 all in

shabbs · Mar 8, 2010

Willos said:
I think its only £12 rom Island 4x4 all in

Cheers mate.

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