This t320 won't turn over . It ran fine back in Sept the last time it was used . Went to start and wouldn't crank , just a single metalic click from the starter when i hit the key. So I figured the battrey was low . Charged battery still the same problem . So i pulled starter and bench tested it , works fine . Re installed and tried to crank it over , same problem . I turn key on and let glowplugs cycle then turn key to start and get the same metalic click from out back . If i leave the key on and turn it back to starter it won't make any noise at all . Turn the key off and repeat and I get the single click again only once until the key is turned off . I should note that I do get the clicking of the relay under the seat everytime the key is cycled to start . The starter relay was also replaced but made no difference . To me it seems like the engine is seized but how ??? I don't know how a perfectly good engine can seize up by sitting ??/ Any thoughts or info ?????????????????