Smoking belt

[woolyAcres]

After a long hiatus, I finally had a couple hours to use my tractor. I'd been running the brush hog for about an hour when I started smelling burnt rubber and smoke started to puff out from under the hood. The engine lugged down and she nearly stalled. It looks like my alternator has frozen up and the belt was just slipping and burning. Of course this was just about dusk and I didn't have any tools with me so I parked it for the night.

Before shutting down I looked under the hood and the fan was still turning and the belt for the alternator was not. This is a clear case of bad alternator right? :irked:

Thanks in advance.

 

[George2615]

That's usually a good sign the alternator bearings are bad if its not turning when everything else still is. Alternator may still be good but needs the bearings replaced.

 

[Markey]

YEP! Remove alternator and take to alternator/starter shop and they will match-up and press-in new bearings. A simple and cheap fix if you let them do it.

 

[California]

Or go to Autozone and tell them you have a '72 Datsun 510, no A/C. That alternator is only $27 and fits perfectly.

Any alternator shop can replace these bearings for you but I wonder if they can match that price, considering labor.

This is the same alternator Yanmar used except its the 35 amp version, instead of your present 5 (??) amp unit. It matches your existing regulator that Datsun also used in early 70's.

Or if you want to go fancy and need massive lights for plowing snow or something, spend another $3 and get the 60 amp 'with A/C' version. But its fatter so will need a longer belt and maybe a longer adjustment bracket. Still uses the same regulator.

Autozone link. Lets see if that link works for everyone.

Yanmar was pretty good back then about using components you could support, no matter how remote your location. These electrical components may have carried over from the same engine's marine, fishing boat, version. Model 2Q... something. Some of those engines must be in really remote parts of the earth.

 

[woolyAcres]

@California, I thought I'd read about you doing this in a previous thread but couldn't find it quickly. The link you posted got me to a long list of alternators at AutoZone, most of which had links for specific autos. But when I went to select the make, Datsun isn't an option.

Correction. Datsun is an option but it's filed along with Nissan. Found it. Looks like the 60A is $30 with $10 core. Perfect.

Could this be the 50A version? I can't tell for sure. If I have to run into town tomorrow I'll see what they have. There is an alternator shop about an hour away but if I can get one from AZ for that price I don't see any reason to get the old one fixed. I'll turn it in as a core.

Thanks

 

[California]

Here's a cut n paste from the Autozone page I saw. The second alternator, #14118 60 amp $30, is in stock locally while #14105 is ship-to-home.

================ begin quote ============
My Vehicles
1972 Nissan/Datsun 510 1.6L 2BL 4cyl

Duralast/Alternator, Part Number: 14105 Vehicle Specific Duralast/Alternator
Price: $26.99
Core $10.00

Part Number: 14105
Warranty: Limited Lifetime
Notes: 35 Amp alternator
* Without A/C * Premium reman
--------------------

Duralast/Alternator, Part Number: 14118 Vehicle Specific Duralast/Alternator
Price: $29.99
Core $10.00

Part Number: 14118
Warranty: Limited Lifetime
Notes: 60 Amp alternator
* With A/C * Premium reman
-------------
Vehicle fitment: [for both of the above] Nissan/Datsun, Subaru, Isuzu/Chevrolet Luv

=========== End quote ===========

In contrast, your link [before the Correction] took me to one I know nothing about:

Part Number: 14268
Alternate Part Number: 14268

50 amp, $46.
* With A/C * Premium reman
Vehicle Fitment: [Chrysler products] .... so I don't think that's the right one.

My own preference when I replaced the alternator was the 35 amp version because it was a simple drop-in replacement. No fussing to see if there was space for the fat 60amp one and then changing belt, adjustment bracket and possibly the base mount bracket, etc. I like the idea of staying so close to original stock that I can just order whatever belt Yanmar specified originally, instead of spending a half day chasing various belts to find one that fits the fat alternator. But I can see if you have a need for high output, then $3 more and a little experimentation is a good solution also.

 

[woolyAcres]

Strange. The ones I found came via the auto zone search my vehicle feature. Once I found Nissan/Datsun in the drop down menu all the other car specs you listed were available. But you're right that the one I linked to is larger.

I'd like to swap my headlights for the LED ones that Winston pointed out at Hoye's. But I don't plan any additional changes to the electrical. I'll be happy with a drop-in replacement. There are too many other things I'd like to spend time on with this tractor so I'll just stick with the 14105 model that's known to fit and work.

Thanks for the links.

I see in the thread about the LED lights you've got a list of things you're looking for from Hoye. Are you planning any other cool/useful mods from Hoye?

 

[California]

I see in the thread about the LED lights you've got a list of things you're looking for from Hoye. Are you planning any other cool/useful mods from Hoye?

Not really. I see things like the turn signals and work light that are long gone from my Yanmars and dream of a full restoration ... but I'll never get around to it.

As for LED headlights - I just need lights to drive safely back to the barn after sunset. The stock headlights and electrical system are fine for this.