Engine won't turn over 1975 jcb 3cx

[Mullis]

I have recently changed the fan belt and rad on the jcb and now the start motor won't turn over the engine very fast and makes a lot of noise. I'm now worried that the engine may have been damaged though over heating. Any ideas..?

[hubert]

The jobs you've done should not affect the engine starting. If it turned over &went there should not be a problem. Check starter motor battery etc. If they are ok you will probably need to look deeper inside engine.

[Mullis]

Hubert,
i think is more to do with the overheating when the belt broke. i feel you are right but this is beyond my skills.