Alternator for MF65

Stick with the dynamo. It's better for the battery. If you want an alternator your looking for a lucan lra100.

Potatoe Eater wrote: »

Does anyone know which car alternator will fit a MF 65. Would I be right in saying its from a ford car ? I was told that a fitted alternator is better than the original dynamo. Help would be appreciated.

An alternator in a great job but you can't just swap them with a dynamo. There is some re wiring to be done first.

Have fitted a few alternators in place of dynamos - and did the same on cars years ago .
The alternator I use is what used to be known as a Lucas 17 ACR for example .
You only need 2 wires coming from the alternator - a heavy gauge one to the battery (or battery lead on starter) and a light gauge wire to the warning light .

If there is an auto electrician around your area he should be able to supply the alternator and suitable warning light .

Lining up the pulleys can take time - you have to make sure the belt is running straight .

Don't know where you live but the last one I did the owner got an alternator and bracket from a guy who repairs tractors (can get details if you want ).
You remove the dynamo and its bracket and replace with supplied bracket , then fit alternator and pulleys should line up. Saves a lot of time .

I had cars run with dynamos - and on changing to alternator it didn't have any bad effect on the battery .
With the dynamo you also had a regulator ( hidden up under the dash usually in a tractor) and over time these go out of adjustment and I have often found that dynamo systems are just managing to put off the charge light but putting very little charge into the battery even when revved .
If a tractor was started a few times with little running time in between then you could have a problem . People often then blame the battery - new battery doesn't solve the problem though . So then maybe turn to the starter ???
All the time the dynamo (or regulator ) causing the problem .
Fit new dynamo - still have problems , because the regulator is at fault .
Also dynamos output depends on revs - and often tractors are not at a high enough rev to give good output .
The alternator gives good output at low revs and any of those I converted the owners have been very happy with them .

dooroy wrote: »

Have fitted a few alternators in place of dynamos - and did the same on cars years ago .
The alternator I use is what used to be known as a Lucas 17 ACR for example .
You only need 2 wires coming from the alternator - a heavy gauge one to the battery (or battery lead on starter) and a light gauge wire to the warning light .

If there is an auto electrician around your area he should be able to supply the alternator and suitable warning light .

Lining up the pulleys can take time - you have to make sure the belt is running straight .

Don't know where you live but the last one I did the owner got an alternator and bracket from a guy who repairs tractors (can get details if you want ).
You remove the dynamo and its bracket and replace with supplied bracket , then fit alternator and pulleys should line up. Saves a lot of time .

Some of thise earlier Fergusons were Positive + earthing return on chassis AFAIK.
Would be interested to know procedure you follow with retrofitting those Lucas ACR of more typical Negative earth design. Convert the alternator & diode packs to + earth to suit tractor or reconfigure the whole chassis to negative?