wiltshire landyman

I’m back

• Jan 20, 2010

• #1

when me alt belt snapped last week we only had a discovery 200 tdi spare belt not a defender belt..

the discovery belt was a lot shorter and a lot thicker we got it on by moving the adjuster arm around on the mounting bracket and moving alternator over..

thing is whether its just coincidence i dont know but its kickin out over 16v now..with the discovery belt on

will the belt make any difference to the way the alternator operates?
or is it just the voltage regulator not working,the alts only 1 week old

 

The Mad Hat Man

Well-Known Member

LZIR Despatch Agent

• Jan 20, 2010

• #2

there is certainly summat wrong there.

 

wiltshire landyman

I’m back

• Jan 20, 2010

• #3

The Mad Hat Man said:

there is certainly summat wrong there.

Click to expand...

yeh at one point the guages were reading over 18v and the batts didnt smell to healthy

but over a week later it started on the button,but it starts of at 14.8v and the longer you drive it it creeps up on the voltage to over 16v

 

G

gee1599

New Member

• Jan 20, 2010

• #4

i dont think the belt will make it over charge its just the drive system just make sure the belt is not over tight whats the volts at the back of the alt ?

 

D

discomania

Well-Known Member

• Jan 20, 2010

• #5

The belt won't have caused that, the alt is goosed, 14.4v max - or near enough.

Just a note, the only way you could have changed the speed of the alt would be by changing the pulley diameter, also think of the revs the engine can run at, say 750-4300, the alt still puts out 14.4v, so a few extra rpm isn't going to up the voltage at all, they are regulated.

However it does sound like your regulator is failing, as the battery charges back up after a start, the amperage will decrease and the voltage will go up, but it is not getting regualted, run lots of electric stuff when the voltage goes up to try and calm it a bit - it will fail soon and may damage the battery and some electrical stuff on the way, get it checked out ASAP.

 

Last edited: Jan 20, 2010

sypher

Well-Known Member

• Jan 20, 2010

• #6

Just slap one of these in there Rich

ALTERNATOR REGULATOR LUCAS A127 BUSH BOX BUSHES on eBay (end time 27-Jan-10 22:43:24 GMT)


Dead easy to fit and for a fraction of the cost of another Alternator . This is the same guy I bought one from , very near next day delivery ( was for me anyway )


.

 

B

bigandyt

New Member

• Jan 21, 2010

• #7

Alternator is rubber ducked and it will be killing your battery.