How to Check Engine Alignment on an Inboard

[@dabbydude]

so, loosen ALL trunnion pin locks to move, or just those 2? are there 4?

[@maixechrys6264]

How does the process change on v drives?

[@rogerlloyd9413]

And presumably re-tighten the 2 aft trunnion locks ? Are there forward trunnion locks ?

[@tabora123]

It looked like you were moving the right side of the engine forward with the pry bar? Even though that side was the side with the larger gap. Am I misunderstanding how the engine moves on the mounts? Thank you for this helpful video! Planning to adjust my v drive boat.

[@superbreastman]

The simple rule is: if you have space on the left the engine must slide to the right and vice versa. The shaft is kept still and the engine must align up, down, left or right.

[@martywells3037]

great info ..thanks!!!!!!!!!!

[@pj2418]

Thank you for this informative video. I have been studying the engine mounts on my Hino Marine diesels and while I do have the vertical adjustments I do not seem to have a system like yours for horizontal adjustment. I am trying to figure out how one addresses this with my setup. I wonder if perhaps the holes for the vertical mounting bolts are slotted or just a little over-sized as an alternative to allow for lateral movement. Have you ever encountered this situation?

[@rogerlloyd9413]

Another video shows a slotted hole.

[@franciscotrujillo4961]

El que no este bien alineado el eje de la cola intraborda con el bloque motor puede producir tanto vibraciones como mala respuesta del motor?

[@hansslob6749]

Now how great is the change that the engine and shaft are out of alinement axial? That should be checked before mounting the bolts again. I would have moved the engine on the front side to keep the axial alinement ok

[@jl.520]

Should the feeler Guage not fit in anywhere? You explained that there should be an equal distance all the way around but that could occured because the shaft is moving back away from the motor. Also shouldn't this be done in the water because the hull flexes.

[@skidim8143]

The best way to check it is with the boat in the water with the 2 couplers unbolted but the 2 faces flat against each other. You are allowed up to .003 gap or less. if the 2 faces are tight against each other your perfectly aligned.

[@cornwasher]

Oh boy, engine alignment...the stuff nightmares are made of...

[@raymondkarlsen9995]

.003" = 0.0762 mm

[@rogerlloyd9413]

I have no doubt that you did a good engineering job. However, that is different from a good instructional job. Thanks for trying but they are so many omissions and unanswered questions.