Hi guys.
My boat has Volvo Penta AD41 diesel and AQ DP 290 sterndrive.
A week ago I was in trolling fishing, went slowly at idle 680-800 RPM for a long time (2+ hrs).
Unexpectedly, the boat lost speed, the motor worked normally and there were no extraneous sounds from the drive.
Several times I tried to get the drive selector to "forward" without success. Handle switched but drive left like as "Neutral",
The "Reverse" turned "on" and ran normally.
Only half an hour later the drive finally hooked "forward" and I immediately added up to 2000 RPM, and returned home.
The next day I took apart the upper gearbox and saw that the brass SPACER RING AND LOCK (that limits the movement of the shaft) was badly deformed.
There are many suggestions on the Internet to replace the brass ring with steel, Okay, I ordered it from a nearby workshop. The turner used 1040 steel.
I assembled all the elements accurately, installed the outdrive on the boat, double checked control cables and went to sea again yesterday,
Everything worked perfectly ...
But ... after 2 hours of slow moving, history repeated itself.
The "forward" movement disappeared again, the clutch appeared only after half an hour ...
I'll get back to my question - is the material of the SPACER RING so critical?
Maybe its deformation is not the cause but a consequence of another problem in the drive ??

I will be very grateful for your advice. Thanks

 

Is the issue solved?

 

Is the angle 90 degrees in the gear where the gear cable connects to the angle plate? The plate where the gear cable connect that plate moves the ger neutral, forward and release. Check that when neutral is in place the gear should be horisontalt, important.