what is trhe output voltage meant to be?
If the alt is poked,is it easy enough to replace the reg or other components?
what is trhe output voltage meant to be?
If the alt is poked,is it easy enough to replace the reg or other components?
if it aint hurting,it aint working.....1991 y60 LWB 24 volt TD42 Safari
With the engine running and at a fast idle, what is the voltage reading across the alternator? (positive probe of multimeter on the large white wire and negative probe scratched into the alternator case).
Next test, motor off, ignition on, disconnect the 2 pin plug from the alternator. Now without damaging the terminals of the plug, back probe the connector. You should see battery voltage, around 24 volts on both wires.
Leave the voltmeter connected to the small White wire in the connector. Now while wiggling the harness up to a foot away from the alternator keep an eye on the meter, does the reading drop down at all?
I would say you have a faulty alternator, could be worn out brushes or a faulty rectifier (unless your fan belt is slipping).
Carry out the above tests and let me know the results.
will do,thanks so much Yendor. Im 40kms from the closest towm/village so your helping me is a god send.
if it aint hurting,it aint working.....1991 y60 LWB 24 volt TD42 Safari
...........................Originally Posted by Yendor
if it aint hurting,it aint working.....1991 y60 LWB 24 volt TD42 Safari
forgot to mention,i read in the manual that the rear bearing and oil seal shouldnt be reused,whats your thoughts there,as silly as that sounds.
Also,are there more than one type of TD42 alt?
And i still cant work out why that lite that looks like a dripping filter is on with the battery and AT temp lite?
Oh,would you know which battery is the starting battery out of the 2,im not sure,id think it was the one with a lead going to the starter,being the lefthand side as you stand facing the front of the engine?
Sorry ffor all the questions,im very keen to fix my trucks probs but learn aswell so I may be able to help others in the future also.
Thanks
jason
if it aint hurting,it aint working.....1991 y60 LWB 24 volt TD42 Safari
Hiya Jason
Yours is a 24 Volt system so both the Batteries are the Starter Battery as they are in Series.
Alternator Output still sounds too low to me and the "dripping filter" light is the fuel filter warning is it not? When you get the Alternator side of things sorted you will probably find all three lights will extinguish.
Woudn't you agree Rodney?
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kiwijase (27th April 2012)
100% ET, I just want to make sure it's not a problem with the battery sense circuit before I fully condemn the alternator.
Jason, As a general rule for an overhaul you would replace the bearings and the oil seal.
kiwijase (27th April 2012), the evil twin (27th April 2012)
battery sence circuit,whats that yendor?
Thanks for your help guys. Is it a job i could do myself to save money,as i have bugger all to spend.
Or should it be checked over and done by an auto sparky.Ive done brushes on alts before,but never a rectifier or diodes and such.
if it aint hurting,it aint working.....1991 y60 LWB 24 volt TD42 Safari
The battery sense circuit is the small white wire in the two pin plug that connects to the alternator.
Brushes are easy to replace and so is the rectifier plate (diodes) if you can get a replacement one.
oh ok,so i need the entire plate?
Could i maybe remove the actual diode/s or rectifier,are they a parts i could buy new,or would one from a wreckers be less trouble?
if it aint hurting,it aint working.....1991 y60 LWB 24 volt TD42 Safari
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