Whats the trick to geting the Alternator out?

Post by **Braddels** » Wed Aug 12, 2009 2:33 pm

Ok so I am changing my alternator on my 89 GQ and am having trouble removing the alternator from the bottom mounts. How do I get the Rod that goes from the front to the back on the bottom out? Or do I need to remove the bottom mount from the engine as well? Any help would be great.

Post by **micks troll** » Wed Aug 12, 2009 3:29 pm

TB42 alternators come standard with a single bolt that runs through to a threaded end (on the front) just undo all the rest of the bolts and keep winding it out completly, it'll have a fine thread so feels like it takes a while. Wiggle the alternator a bit as your undoing.
Hope it helps, I had a pretty long extension or an extension on an extention which helped!

Post by **twodiffs** » Wed Aug 12, 2009 3:57 pm

So you got caught by the 'sneaky bolt' trick eh

As per micks troll...wind it out completely, should be pretty easy.

Post by **coxy321** » Wed Aug 12, 2009 4:04 pm

My TD42 has two lower bolts.

Post by **Braddels** » Wed Aug 12, 2009 4:08 pm

Sorry guys I should have mentioned that it is a TD42 with the two bolts on the bottom, 1 in front and one behind. I will have another look after work tonight. Cheers for the replys so far.

Post by **coxy321** » Wed Aug 12, 2009 4:10 pm

There are two lower bolts. Get to them via the wheel arch flappy cover thing - i used a combination ratchet spanner with a swivel head, however there is plenty of room for "normal" tools.

Have fun putting it back in - the holes are an absolute PITA to get lined up properly!!

Post by **cooki_monsta** » Thu Aug 13, 2009 6:10 pm

thats what i did when i did mine, oh and when ur putting one back in a petrol put a gu tb4.5 in, its 100A and bolts in

Post by **Braddels** » Thu Aug 13, 2009 7:32 pm

Thanks guys, i undid the 4 bolts holding the lower mounting bracket and it literally fell off the Alt

It was the plastic looking spacer on the Alt that was stopping it from coming free in the first place. Ok so the old one is out and I just need to put the new 120A AEA unit in. At work at the moment so it will have to wait till tomorrow. Thanks again.

Post by **coxy321** » Thu Aug 13, 2009 8:53 pm

Is that a direct bolt in replacement? I need to pull mine out AGAIN - have been thinking about a higher output unit.

Post by **Braddels** » Thu Aug 13, 2009 10:38 pm

Yes it is the easiest replacement Alt that I found after doing a bit of searching, No modifications needed. Straight swap. Twice the power output of my standard unit (60A) and has an extra vacume outlet blanked on the top hose that may come in handy later. Total price delivered from Brisbane to NT $550 roughly. AEA have many Alts to choose from highly recommend them as they know their sh*t. Give them a call, found them recommended on this as well as other forums. Good luck.

Post by **coxy321** » Fri Aug 14, 2009 8:17 am

Make sure you post up pics when you get it, and when you put it in. I might just wait and save for a new unit now!

Post by **micks troll** » Fri Aug 14, 2009 3:22 pm

Heres another option for an upgrade! Has been in my GQ petrol wagon for over 5years and still going strong. Can run 6 100watt spotties as well as two 110watt high beams and other acessories at near idle and still be fully charging. Minor mods need to it is a small pulley, longer belts, spacers made to suit the leg gap difference in the bottom legs and grind a bit out of the leg on the manifold under the airbox and a new plug.
Note this can be pulled back off and old one is still able to go back on!
Cheers Mick

Post by **coxy321** » Fri Aug 14, 2009 5:13 pm

Looks like a good upgrade, however the TD42 alternators are on the passenger side, and mounted down a few more inches. I'm guessing that the unit you have doesn't have a vac pump either (although i can see a hose back there....).

Post by **micks troll** » Fri Aug 14, 2009 5:33 pm

coxy321 wrote:Looks like a good upgrade, however the TD42 alternators are on the passenger side, and mounted down a few more inches. I'm guessing that the unit you have doesn't have a vac pump either (although i can see a hose back there....).

Nah it has no vaccumm as only petrol worthy but good upgrade!

Post by **Braddels** » Fri Aug 14, 2009 7:26 pm

Alt fitted and working great

13.9V at 1000RPM. Old alt was throwing in 12.2V @ 1000RPM. Will take some pics tomorrow and

Post by **rodney96** » Sat Aug 15, 2009 8:19 am

coxy321 wrote:Looks like a good upgrade, however the TD42 alternators are on the passenger side, and mounted down a few more inches. I'm guessing that the unit you have doesn't have a vac pump either (although i can see a hose back there....).

mine is mounted quite high on my TD42 on passenger side almost level with water neck, still attracts mud tho :-( lol

Post by **coxy321** » Sat Aug 15, 2009 11:52 am

rodney96 wrote:
coxy321 wrote:Looks like a good upgrade, however the TD42 alternators are on the passenger side, and mounted down a few more inches. I'm guessing that the unit you have doesn't have a vac pump either (although i can see a hose back there....).

mine is mounted quite high on my TD42 on passenger side almost level with water neck, still attracts mud tho :-( lol

I stand corrected mick - its a bit higher than what i remember:

Post by **rodney96** » Sat Aug 15, 2009 2:47 pm

i only remember cause i recently did my alternator it was full of mud so had to get it rebuilt

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Whats the trick to geting the Alternator out?

Whats the trick to geting the Alternator out?

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