peterkvs
Active Member
Ever since I bought the 400 DA I have been unable to align the 3116and ZF HSW 800 VI to the prop shaft. At least any better than about 8-10 thousandths. The problem was that on both engines the previous owner(s) had let the water pump drip for a long time onto the motor mount below it and low and behold the motor mount was rusted solid in place. I tried all summer to use penetrating oil and heat, but to no avail, it would not budge. So the big winter project was to replace the motor mounts and get the engines aligned.
I started on the port engine because it is much easier to access. At first I thought I was going to have to saw the motor mounts in half to get them off the engine, but I soon realized that the motor mounts one the engine could be unbolted. To gain access to the bolts, the water pump had to be removed and to remove the water pump the fuel cooler had to be disconnected from the water pump and fuel lines. I shut off the water and the fuel and removed the fuel lines from the cooler and then pulled the cooler off of the water pump inlet and set it aside. Then I removed the hose from the water pump to the heat exchanger, and finally removed the water pump. I unbolted the mount from the engine and the stringer and got it out of there. Replacing it was the opposite. The Starboard engine was a bit more of a challenge because it is on the side of the engine away from the center of the bilge and the only way to get to it is to lay on top of the engine and reach down from about and work on it. I also had to remove the pipe from the heat exchanger to the transmission cooler. The starboard engine was a lot worse and required grinding, priming and painting the block and parts which added a lot of time to the project.
Here are some pictures of the project. it took me about 4 hours to change the mount on the port engine, 8 hours to change the mount on the starboard engine and 15 minutes to align each engine. I was able to get both engines aligned to within one-thousandth all the way around the flange!
Fun times, except for having to do like 100 pushups to get into position top of the starboard engine!
Pete
I started on the port engine because it is much easier to access. At first I thought I was going to have to saw the motor mounts in half to get them off the engine, but I soon realized that the motor mounts one the engine could be unbolted. To gain access to the bolts, the water pump had to be removed and to remove the water pump the fuel cooler had to be disconnected from the water pump and fuel lines. I shut off the water and the fuel and removed the fuel lines from the cooler and then pulled the cooler off of the water pump inlet and set it aside. Then I removed the hose from the water pump to the heat exchanger, and finally removed the water pump. I unbolted the mount from the engine and the stringer and got it out of there. Replacing it was the opposite. The Starboard engine was a bit more of a challenge because it is on the side of the engine away from the center of the bilge and the only way to get to it is to lay on top of the engine and reach down from about and work on it. I also had to remove the pipe from the heat exchanger to the transmission cooler. The starboard engine was a lot worse and required grinding, priming and painting the block and parts which added a lot of time to the project.
Here are some pictures of the project. it took me about 4 hours to change the mount on the port engine, 8 hours to change the mount on the starboard engine and 15 minutes to align each engine. I was able to get both engines aligned to within one-thousandth all the way around the flange!
Fun times, except for having to do like 100 pushups to get into position top of the starboard engine!
Pete