Aligning driveshaft?

Joined
Jul 25, 2019
Likes
5
Location
Sacramento
#1
Just wanted your guys opinion on how my driveshaft alignment is looking (if you can even tell in the photos).
I installed a worx aluminum pump shoe that fit nice and flat, and used 5200 to seal my gaps.
Had to add quite a bit of shimmage to the rear of the pump, as I am swapping everything from a 92 sn to a 95 SN. When I pulled the 92 apart the driveshaft was not as straight as I have it now, and it ran great as far as I know. I am center dead nuts at 10 3/8” from side of hull to center of shaft, and down I cannot get any measurements for reference.
 

Attachments

Harbor

Site Supporter
Joined
Jun 23, 2013
Likes
1,213
Location
Stockton
#4
The photo is not square to the bulk head so might be some illusion..... At any rate, it appears off, it's trajectory looks down and heading towards the exhaust side.. have it visually centered to the tubes bore...
 
Joined
Jul 25, 2019
Likes
5
Location
Sacramento
#8
Need the cold fusion alignment tool.
The picture is deceiving, it looks damn near dead nuts center of hole when looking at it. I can see the angle of the photo is to the side a bit.
I want
You have to put the motor in there along with the midshaft/housing to really see what it is doing, where you need to shim etc...........
I slid the midshaft in and it aligned up and spun freely, do not have motor in yet. I want to do this right, I guess I should get the alignment tool.
Can anybody guide me in the right direction to get this alignment tool? @JetManiac @tomski
 

JetManiac

Thinking about shredding
Site Supporter
Vendor Account
Joined
Jun 8, 2008
Likes
3,624
Location
orlando
#9
The picture is deceiving, it looks damn near dead nuts center of hole when looking at it. I can see the angle of the photo is to the side a bit.
I want

I slid the midshaft in and it aligned up and spun freely, do not have motor in yet. I want to do this right, I guess I should get the alignment tool.
Can anybody guide me in the right direction to get this alignment tool? @JetManiac @tomski
We have the Cold fusion pump alignment tool in stock.
 

Big Kahuna

Administrator
Joined
Jan 14, 2006
Likes
7,501
Location
Tuscaloosa, AL
#11
The picture is deceiving, it looks damn near dead nuts center of hole when looking at it. I can see the angle of the photo is to the side a bit.
I want

I slid the midshaft in and it aligned up and spun freely, do not have motor in yet. I want to do this right, I guess I should get the alignment tool.
Can anybody guide me in the right direction to get this alignment tool? @JetManiac @tomski
If your midshaft slides one and the bolts go in easy you just about have it perfect. If you have to push the midshaft housing over @KMAC then your pump is out of alignment.
 
Joined
Jul 25, 2019
Likes
5
Location
Sacramento
#12
If your midshaft slides one and the bolts go in easy you just about have it perfect. If you have to push the midshaft housing over @KMAC then your pump is out of alignment.
My midshaft slides on and all 3 holes line up perfect without forcing it in any direction. Like I said before, when I took the ski apart and took the 92 midshaft off, it was centered but vertically the driveshaft was hanging really low, it was almost touching the thru hull hole on the bottom. I ran that ski for a whole summer and I’m not saying it didn’t do any damage because I have not really had the ski long enough to notice, but it ran great all summer until my foot went through the tray on a hard landing. Bearings on driveshaft feel very smooth, splines look good, I am mostly worried about getting the motor nice and straight on my couplers.
 
Joined
May 12, 2019
Likes
6
Location
Annapolis, Maryland
#13
Are you using the 2 alignment pins in the midshaft housing and the 2 on the top of the wear ring housing? If not I would highly recomend you do, for a few reasons.

1. On my 96 RN, I found that when using all 4 pins the left to right positioning of the shaft was almost perfect and I only had to shim the back of the pump evenly on both sides. This was with the cold fusion alignment tool, which also has holes for the pins.

2. If you ever have to pull the pump off to work on it and aren't using the pins it's very unlikely that it will still be aligned when you put it back on. The first time I checked the alignment on my ski I found the pins were missing and I tried to align it without the pins and I found that with all 4 pump bolts in and almost snug I was still able to move the pump left to right, so much that I couldn't slide the coupler into the alignment tool. The bolt holes alone just are not precise enough to repeatedly locate the pump.

3. If you dont use the pins in both the Cold fusion tool and your midshaft housing when you pull the tool off and go to put your midshaft housing back in you have no way of knowing if your midshaft housing is going to be in the exact same position where the tool was located. This is again because the clearance holes for the bolts are not accurate enough to repeatedly locate the housing and tool in the same position. If you want to see what I'm talking about, put the tool in without the pins and tighten the bolts just enough so you can still move the plate around, then try and slide the coupler onto your driveshaft as you move the plate around in the bolt holes. It probably ain't gna light up.
 
Joined
Jul 25, 2019
Likes
5
Location
Sacramento
#15
Are you using the 2 alignment pins in the midshaft housing and the 2 on the top of the wear ring housing? If not I would highly recomend you do, for a few reasons.

1. On my 96 RN, I found that when using all 4 pins the left to right positioning of the shaft was almost perfect and I only had to shim the back of the pump evenly on both sides. This was with the cold fusion alignment tool, which also has holes for the pins.

2. If you ever have to pull the pump off to work on it and aren't using the pins it's very unlikely that it will still be aligned when you put it back on. The first time I checked the alignment on my ski I found the pins were missing and I tried to align it without the pins and I found that with all 4 pump bolts in and almost snug I was still able to move the pump left to right, so much that I couldn't slide the coupler into the alignment tool. The bolt holes alone just are not precise enough to repeatedly locate the pump.

3. If you dont use the pins in both the Cold fusion tool and your midshaft housing when you pull the tool off and go to put your midshaft housing back in you have no way of knowing if your midshaft housing is going to be in the exact same position where the tool was located. This is again because the clearance holes for the bolts are not accurate enough to repeatedly locate the housing and tool in the same position. If you want to see what I'm talking about, put the tool in without the pins and tighten the bolts just enough so you can still move the plate around, then try and slide the coupler onto your driveshaft as you move the plate around in the bolt holes. It probably ain't gna light up.[/QUOTEYes I am using both the pins in the wear ring housing and the pin in the midshaft housing. Unfortunately haven’t bought the tool yet, but I am most likely going to get the cold fusion. Basically what I did was put the front two bolts in the pump and first tightened them down. I then looked at my holes to see if I needed to align anything in the back as far as bolts lining up, and made sure my pump was tight to the shoe in the front, and it is. I then just slapped the two rear bolts in the pump to see where I was at, and my driveshaft was low and to the left a bit. I used a thicker washer on the left side of the rear of the pump that took some effort getting in, and a thinner washer on the right side. Tightened everything back up and I’m at where I’m at now, midshaft slides on and all 3 bolts thread in to their holes without having to force anything either which way. I honestly am thinking it’s good or damn close to good.
 
Top Bottom