Thanks for your replies Im beginning to understand how heavy duty these trucks were
So on stock springs with 1/2 ton on the back springs would only compress by about 2 inches
One more query when I refurbished the front springs i noted that there was only a castor shim on one side. I reassembled it the way i found it ..... seems to drive ok......... Im guessing that some one left out the shim on purpose to compensate for some other defect?
