Fan belt size help - Defender Source
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  #1  
Old October 19th, 2014, 01:29 PM
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justin whalen
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Fan belt size help

So I just bought a 1988 defender 110 stock 200tdi. Driving home 300 more miles to go and I have a broken fan belt. Question. Does it go from the block to the fan belt to the alternator? It's gone so I can't tell anymore. Also I gotta go but a new one and install I'm in Las Vegas now so I can get to a auto store. Am I correct with the above and what size please if you can. Thanks
J
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  #2  
Old October 19th, 2014, 02:31 PM
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Ryan Phelps
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88 did not come with a 200tdi. So do you have a disco or defender 200?
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  #3  
Old October 19th, 2014, 02:50 PM
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John B.
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If it is a Defender 200TDI, the belt is Dayco 15405. Yes, it goes around the waterpump and alternator pulleys. If you have a Discovery 200TDI, I do not know the size, but an auto parts store should be able to measure and figure it out.
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  #4  
Old October 19th, 2014, 03:16 PM
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justin whalen
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I got the belt on. Now my alternator won't spin. I can spin by hand but when I turn it over it locks up. Know the alternator type or model ?
J
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Old October 19th, 2014, 04:07 PM
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John B.
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They are a Lucas or Marelli alternator. You won't be able to get one at an auto parts store in the USA.....

Take a photo so we can see which engine and alternator you have. There are multiple choices.
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Old October 19th, 2014, 05:56 PM
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justin whalen
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Thanks. I'm gonna stay in Las Vegas tonight and take the alternator tomorrow (closed Sunday) to have it re built. Thanks for all the help. Kinda a bummer starting off this way with my truck
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Old October 19th, 2014, 06:12 PM
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Quote:
Originally Posted by squidface View Post
Now my alternator won't spin. I can spin by hand but when I turn it over it locks up.
That's strange. It's an alternator - its resistance to rotation is proportional to the power it is generating. If the voltage is fixed, the higher the current load on the alternator, the higher the rotational resistance.

I'm not sure what "locked up" means. If the alternator resists rotation in certain modes of operation, it is by definition working. Make sure to have your alternator tested before you decide to replace it. Any Autozone or Advance Auto Parts will do this for you.

Right now you may be thinking everything is broken on your vehicle, but don't let that internal bias color your diagnosis.

Another thing to consider:
Why did your fan belt break? Perhaps you think it broke with age. Perhaps it's because the vehicle is old. But there's another possibility: If the alternator is shorted out, then its resistance to rotation is theoretically infinite. This could easily cause the alternator belt to snap without warning.
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Old October 19th, 2014, 06:12 PM
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justin whalen
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And cuz I'm new. I can only seem to post 1 pic

------ Follow up post added October 19th, 2014 03:19 PM ------

I think a Bearing went out. It will spin but I hear something going on like the rod inside May be tweaked. Then it will stop spinning and the belt will continue. And then start to burn So it spins then locks up, spins more may lock up then be fine for several minutes With such a long drive ahead I can't risk going as is (hoping it does not lock up again).
Thanks
J
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  #9  
Old October 19th, 2014, 06:37 PM
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It seems pretty common for this to happen on these. I've seen a couple. Probably a bad bearing and then the alternator catches physically cooking the belt.
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  #10  
Old October 21st, 2014, 06:21 PM
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justin whalen
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a recap of my adventure. fan belt fixed EZ, alternator was a Lucas LRA602 and Vegas Auto Electrical 702-871-7122 had an exact replacement in stock 90$ they had several if anyone need one give them a call. very cool people
j
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  #11  
Old October 21st, 2014, 06:59 PM
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Where did you pick the truck up from? Let me know when you get back in town if you need any help with anything or just want a second set of eyes to look over things as I live in the same neck of the woods.

Jake
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