Alternator

Changing the alternator

Postby GD40 on Mon, 04 Jun 2018 7:12 +0000

Hi all,

Just did a weekender away in the high country and looks like my alternator has crapped itself. Luckily I had enough charge in my battery to start the car as the cranking and second battery are linked.

Now I'm going to change the alternator myself, it doesn't seem like a big job but I was wondering if there's anything I specifically need to look for?

I drive a 2010 kun26 dual cab manual diesel.

I'm somewhat handy with cars, as I can service my own, but diving deeper into the truck I might struggle. Does anyone know of any decent guides for stuff like this?

Best place to get parts? My mate has a trade account at bursons I use, and they seem fantastic!

Thanks in advance

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Re: Changing the alternator

Postby TOYZX on Mon, 04 Jun 2018 4:24 +0000

Get on to mudgeeraba auto electric the guy there used to be on this site and he does an upgraded alt for our ute. Runs a solid front pully so no shitty one way bearing to crap out and an upgraded reg not a temp sensitive one. I've been running one for a couple of years now good unit.

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Re: Alternator

Postby DeadlyBeast on Mon, 04 Jun 2018 5:20 +0000

Threads merged
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Re: Changing the alternator

Postby wombat81 on Mon, 04 Jun 2018 5:54 +0000

GD40 wrote:Now I'm going to change the alternator myself, it doesn't seem like a big job but I was wondering if there's anything I specifically need to look for?

Not really. I've changed mine 4 times now. Just bite the bullet and pull the air box out first. It's only 3 bolts and makes accessing the alternator so much easier. I also managed to cross thread the bottom alternator bolt the first time I replaced it. Had to tap it out which was a massive PITA. Don't do that. If you haven't changed the belt for a while you might as well whack a new one on at the same time. Oh, this is probably worth mentioning:
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.


GD40 wrote:I'm somewhat handy with cars, as I can service my own, but diving deeper into the truck I might struggle. Does anyone know of any decent guides for stuff like this?

I used the the Toyota GSIC manual the first couple of times. It's easy to find if you do some searching. If you get stuck, let me know. I've also got a Gregorys manual in my Hilux, but I won't have access to it until later in the week (Mrs has the car in Charter Towers for work). Again, let me know if you get stuck.

But it's honestly not hard.
1. Pull the air box out - 3 bolts and remove the MAF sensor.
2. Put a socket and long bar on the tensioner pulley. Push it towards the passenger side to release the belt. Pop the belt off. (maybe take a photo of the belt path before you remove it).
3. Unbolt the alternator (two bolts), remove the plug and earth.
4. Put the new one in and reverse the above steps.

GD40 wrote:Best place to get parts? My mate has a trade account at bursons I use, and they seem fantastic!

Like Toyzx said, Bansheebuzz at Mudgeeraba Auto Electrical does upgraded units with solid pulley (no clutch - the clutches do tend to fail, apparently). They are good. I rang him a few weeks back to get a second one off him and he said he was absolutely snowed under and wouldnt be able to get me one done for a few weeks. So give him a call by all means, but you might need a plan B. In the end my auto elec got me an OEX brand alternator. He reckons they're decent. It outputs the same as the banshees upgraded model, so I'm happy. Will be interesting to see how long it lasts because the genuine ones don't seem to have a great life span. The details are here if you're interested: https://www.newhilux.net/phpbb/viewtopic.php?p=421981#p421981

Let me know if you have any other questions.
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Re: Alternator

Postby GD40 on Mon, 04 Jun 2018 7:14 +0000

Wombat81 you're an absolute legend thanks so much.

I did most of the work before coming back to this thread. I took the airbox out and gave the original alternator a good clean and pressure wash, sprayed it with wd40 and will see how that goes.

I'll pop into Bursons tomorrow at work and get some brushes and replace them, see if the cheaper option works.

If not, I'll replace the whole thing before Monday when we head to Robe.

Who knew changing an alternator was so easy, thanks for the chop out lads!!!!

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Re: Alternator

Postby wombat81 on Mon, 04 Jun 2018 7:18 +0000

GD40 wrote:I'll pop into Bursons tomorrow at work and get some brushes and replace them, see if the cheaper option works.


In my experience it's unlikely to be the brushes. Is it making any sort of noise, like a whistling/whining type noise? If so it's probably the rectifier failing. Seems to be quite common. Otherwise the clutches seem to let go commonly, too.

Good luck with it.
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Re: Alternator

Postby GD40 on Mon, 04 Jun 2018 7:21 +0000

It's not making any unusual noises at all. I think the water pump started making a funny noise a few weeks ago and I pulled the belt off and had a play with the pulleys and assumed it was that but now I think of it, it might be the alternator.

Thanks again mate, hopefully get the old girl back on the road before Monday!
wombat81 wrote:
GD40 wrote:I'll pop into Bursons tomorrow at work and get some brushes and replace them, see if the cheaper option works.


In my experience it's unlikely to be the brushes. Is it making any sort of noise, like a whistling/whining type noise? If so it's probably the rectifier failing. Seems to be quite common. Otherwise the clutches seem to let go commonly, too.

Good luck with it.


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Re: Alternator

Postby GD40 on Thu, 07 Jun 2018 5:12 +0000

wombat81 wrote:
GD40 wrote:I'll pop into Bursons tomorrow at work and get some brushes and replace them, see if the cheaper option works.


In my experience it's unlikely to be the brushes. Is it making any sort of noise, like a whistling/whining type noise? If so it's probably the rectifier failing. Seems to be quite common. Otherwise the clutches seem to let go commonly, too.

Good luck with it.
Replaced the alternator, pretty simple to do. She struggled to start from the second battery as that was pretty low in juice but she cranked over and I took the truck for a few laps of the eastern and all back to normal.

Thanks for the help mate!!

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