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« on: August 08, 2021, 01:16:23 PM »
We are replacing the original Hurth gearbox on our '86 C-34 with the larger and more robust ZF12M. The old Hurth was struggling to get into gear and on the mechanical survey showed water, sodium and unmeasurable viscosity due to contamination. So biting the bullet. Does the motor "have" to be shimmed (lifted) and does the prop shaft "have" to be shortened? Just wanting to gather all the facts before proceeding. Can the aft section of pan be cut back to give more clearance or is the issue purely around alignment? Curious to hear from some folks who have done it. Oh yes - how many hours would you say it should take to remove, replace, reconnect, and align?
Thanks so much!
Alex