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  #25  
Old 15-01-2018
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Default I reckon my battery and alternator could both be stuffed.....

I reckon you're right Clarky. I was a bit worried when I saw the difference in voltage between idling and revving on my Commander and from what I saw on my wife's car, it seems to match what you are saying (very slight voltage change between idling and revving).

I took it in to Battery World this morning for a load test. My battery is rated at 800CCA and the load test showed only 560CCA, which indicates she's stuffed. Plus, the guy pointed out that my battery had been leaking a bit of acid and echoed ren0vator's comments about lead acid batteries not handling the rough roads and high temperatures up here all that well.

I also got the BW guy to check the alternator output whilst he had the load tester connected. This morning it was hovering around the 13.4-13.5V mark at idle and the guy said it jumped up to around 14V when I revved it up. Based on this I reckon that the alternator is on its way out also.

I have found an Optima D27M Blue Top in Perth for a steal that I will grab when down there. I might also have to grab another alternator from a wrecker unless someone knows where I can get a new one from that doesn't cost me another mortgage! Anyone had one of these alternators reconditioned? Surely the costs to recondition one can't be prohibitive?
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Old 15-01-2018
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If the battery has been leaking I urge you to pull the battery tray out and wash down the PCM (under the tray) with bicarb and fresh water. PCM's don't work to well with holes in them.

They can be repaired but along with the regulator/brush assy the slip ring probably will need replacing as well.

see this video www.youtube.com/watch?v=aVvPzwtxdrM

Search tg17c026 and TG17C030 to find the brush's and slip ring (and complete alternators)

or try these numbers
JEEP/CHRYSLER A04801250AA 04801250AB
MERCEDES-BENZ A6421540402 A6421540202 A6421540502
MERCEDES-BENZ 2542969
MERCEDES-BENZ 2542989
MERCEDES-BENZ 2543289

Second hand one 90,000km http://www.ebay.com.au/itm/MERCEDES-...8AAOSwNchaEuCM
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Last edited by Clarky; 15-01-2018 at 05:13 PM.
  #27  
Old 15-01-2018
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How to http://www.chirpz.com/jeeps/Alternator.pdf

http://www.baxters.com.au/alternator...cedes-clk.html
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  #28  
Old 04-02-2018
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Red face Bloody Battery Terminals are the Wrong Way Around!!

So I grabbed my Optima D27M battery when I was in Perth last weekend and went to install it yesterday and realised the bloody terminals are the wrong way around!!

I assumed that the D27F (yellow top) like Clarky is running and the D27M (blue top) were exactly the same configuration - except for the additional set of terminals on the blue top - but of course they are the opposite!....



The battery leads on the Commander seem very short and won't be able to reach the other side of the battery if I rotate it 180 degrees - do you reckon it would be worth just extending them to make them reach? I really don't want to buy another battery if I can help it. I was thinking along these lines:



https://www.ebay.com.au/itm/1-Pair-C...UAAOSw8A1aXPDH
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  #29  
Old 04-02-2018
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Quote:
Originally Posted by Hanna View Post
Just make sure the cable diameter is the same as OEM
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  #30  
Old 08-02-2018
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Thats me! For reference i'm running a SSB SS88TI AGM Stop-Start battery as my main starter battery (1180CCA / 92AH) and that second battery is a 38AH AGM (all that would fit unfortunately) that i use to run my fridge / other accessories as needed.

I've got an isolator wired up too so I can tie the batteries together just incase I happen to flatten / kill the starter battery although so far i've only ever flattened it once and that was when the car was in the shed whilst i was rebuilding the engine.

The battery tray is a pretty simple build consisting of right angle aluminium to make the base and it mounts off a couple bolts on the strut brace and one large bolt off the strut tower.

Quote:
Originally Posted by Clarky View Post
I have an Optima D27F since April 2016, so far so good.
Cold Cranking Amps: 830
Capacity: 66 Ah

Here is some pics of a second battery setup on a Hemi.
Can't figure out who did it (was a member here) but the original images hosted by Photo Bucket so of course we can't see then now.
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Old 24-02-2018
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Default Success!

So, I ended up flattening out the battery terminals and stretching them as far as I could and I made it work! The negative wasn't an issue, however the positive is a bit more of a stretch (pardon the pun).






I figured this would keep me out of trouble until I do some rewiring for my Anderson plug and batter isolator.

So far, so good. I am pretty sure my alternator is fine, but will monitor over the next few weeks.
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Last edited by Hanna; 24-02-2018 at 01:50 PM.
  #32  
Old 24-02-2018
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The existing lead acid battery was leaking badly and looking pretty worse for wear:



The good news is that I removed the battery tray to check the ECM and there were no signs of acid attack:



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