If the motor is froze up .... (not cold, locked up) then...... hmmmm broken timing chain and it has things all jammed up? Maybe do a search in here on the subject. Not sure what to tell you to search with. "Locked engine" "Froze Engine", "broke chain"??

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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way".
by JerryBro

The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue

My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair

62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels