Need some help,
Mainship 400, single Cat 3126: We did a sea trial with an excellent surveyor. This was the first run after a new shaft, cutlass bearing, and reconditioned prop were installed (shaft replacement was a finding from the previous sea trial). The shaft vibration could still be felt when running at full speed. We could visually see the shaft seal assembly violently wobbling.
I find any information on the prop shaft assembly layout.
We put a dial indicator on the shaft near the shaft seal. We had 0.025" runout on the shaft however, when we place a little force on the shaft we had > 0.050" movement.
Does anyone know what the runout tolerance is on this type of shaft?
Is there a bushing in the haul of the boat between the shaft seal assembly and the cutlass bearing near the prop?
Any suggestions on where to go from here? We really like the boat!!
thanks
Mainship 400, single Cat 3126: We did a sea trial with an excellent surveyor. This was the first run after a new shaft, cutlass bearing, and reconditioned prop were installed (shaft replacement was a finding from the previous sea trial). The shaft vibration could still be felt when running at full speed. We could visually see the shaft seal assembly violently wobbling.
I find any information on the prop shaft assembly layout.
We put a dial indicator on the shaft near the shaft seal. We had 0.025" runout on the shaft however, when we place a little force on the shaft we had > 0.050" movement.
Does anyone know what the runout tolerance is on this type of shaft?
Is there a bushing in the haul of the boat between the shaft seal assembly and the cutlass bearing near the prop?
Any suggestions on where to go from here? We really like the boat!!
thanks