If the vibrator is still present, but doesn't start or run well, you can hook it in series with a regular 40-60 Watt lamp bulb and use your wall socket to clean the contacts up.
The cost of a solid state vibrator is about what an SR-42 is worth and they seem about as robust as a canary anyway.
Those 4-pin vibrators are very common and you ought to be able to source a good one for about $ 5.
But...who's running VHF AM mobile these days?