Hey I have a Unit service manual that covers the 357, 514, and 1020 Unit cranes. The 614 replaced the model 514 (it was a newer update 1/2 yard machine.) It has a full cable lengths chart for the 514, which will work for the 614 since I dont believe Unit changed anything as far as cables and rigging went besides the use of pendants on the boom hoist. I have the books scanned on PDF file and can email them to you without an issue. You can email me at email@example.com
Let me know if your interested, thanks for your time.