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Replacing alternator with battery connected?

Posted: Thu Nov 29, 2012 7:50 pm
by -Nighthawk-
Hey guys,
I was just wondering if it's possible to replace an alternator while the battery is still connected? Are there any consequences to doing this?

My alarm is retarded and goes off when the battery is disconnected, I don't think it was wired up properly when it was replaced a few years ago as it's meant to disable when the keys are in the ignition.

Anyway, so will there be any consequences to replacing the alternator with the battery still connected?

Cheers

Re: Replacing alternator with battery connected?

Posted: Thu Nov 29, 2012 7:58 pm
by aza013
Unless the car is running then you should not have a problem.

Re: Replacing alternator with battery connected?

Posted: Thu Nov 29, 2012 8:06 pm
by JOA81
Make sure you tape up the big terminal when you take it off the alternator or at least wrap it in a rag as that is direct power from the battery so if you touch it against any part of the car you could fry things that's about the only thing you need to be careful of

Re: Replacing alternator with battery connected?

Posted: Thu Nov 29, 2012 8:45 pm
by -Nighthawk-
Ok thanks for the info :) I'll be replacing the alternator this weekend, cheers

Re: Replacing alternator with battery connected?

Posted: Fri Nov 30, 2012 12:06 pm
by Shhtuart
-Nighthawk- wrote:Ok thanks for the info :) I'll be replacing the alternator this weekend, cheers
Pumped.

Re: Replacing alternator with battery connected?

Posted: Fri Nov 30, 2012 12:16 pm
by silverGPX
Are you familiar with the method of changing an alternator?

Re: Replacing alternator with battery connected?

Posted: Fri Nov 30, 2012 12:41 pm
by -Nighthawk-
I have a fair idea of how to change it, apparently it's easier on a GR as it can be taken out front the top.

Re: Replacing alternator with battery connected?

Posted: Fri Nov 30, 2012 12:43 pm
by silverGPX
Disconnect the speaker on alarm?

Re: Replacing alternator with battery connected?

Posted: Fri Nov 30, 2012 12:56 pm
by -Nighthawk-
The battery backup keeps it going, I'll have to unscrew the system to get to it. I don't want to be messing around with the alarm when I have no idea how to fix it :P

Re: Replacing alternator with battery connected?

Posted: Fri Nov 30, 2012 9:58 pm
by payaya
pull the fuse able link in the fuse box.

Re: Replacing alternator with battery connected?

Posted: Fri Nov 30, 2012 10:18 pm
by -Nighthawk-

Re: Replacing alternator with battery connected?

Posted: Sat Dec 01, 2012 11:11 am
by -Nighthawk-
Anyone know how to loosen the alternator belt which is stuck? Been using a socket to try loosen the bolt on the side first but it's not budging :/

Re: Replacing alternator with battery connected?

Posted: Sat Dec 01, 2012 12:52 pm
by vipfto
-Nighthawk- wrote:I have a fair idea of how to change it, apparently it's easier on a GR as it can be taken out front the top.

HAHAHAHA Nope out from side or underneath via removing exhaust :lol:

Either disconnect or remove fuse for battery or have fun with the shorts :P

Re: Replacing alternator with battery connected?

Posted: Sat Dec 01, 2012 1:42 pm
by silverGPX
Yeah has to be taken out from side or bottom

Re: Replacing alternator with battery connected?

Posted: Sat Dec 01, 2012 2:22 pm
by Daniel2019
-Nighthawk- wrote:Anyone know how to loosen the alternator belt which is stuck? Been using a socket to try loosen the bolt on the side first but it's not budging :/
Can you just take the pulley off, then the belt?

Re: Replacing alternator with battery connected?

Posted: Wed Dec 05, 2012 11:33 pm
by payaya
-Nighthawk- wrote:Anyone know how to loosen the alternator belt which is stuck? Been using a socket to try loosen the bolt on the side first but it's not budging :/
Stick a pole on the extension and should come off easy!

Re: Replacing alternator with battery connected?

Posted: Wed Dec 05, 2012 11:34 pm
by payaya
-Nighthawk- wrote:So pull fuse #16 out first?
http://ftoaustralia.com/v3/viewtopic.php?f=21&t=15276
Think so! After pulling link, you will need to see if there is still 12volts at the alternator end terminal.

Re: Replacing alternator with battery connected?

Posted: Thu Dec 06, 2012 12:14 am
by -Nighthawk-
payaya wrote:
-Nighthawk- wrote:Anyone know how to loosen the alternator belt which is stuck? Been using a socket to try loosen the bolt on the side first but it's not budging :/
Stick a pole on the extension and should come off easy!
We tried that, didn't budge :P

Re: Replacing alternator with battery connected?

Posted: Thu Dec 06, 2012 12:42 am
by payaya
-Nighthawk- wrote:
payaya wrote:
-Nighthawk- wrote:Anyone know how to loosen the alternator belt which is stuck? Been using a socket to try loosen the bolt on the side first but it's not budging :/
Stick a pole on the extension and should come off easy!
We tried that, didn't budge :P
Not trying hard enough then. With a pole you should easily be about to break it. Using a ring spanner?