Re: Connecting motor to transmission

Posted by Ken McWilliams on December 09, 2001 at 19:17:32 from (205.188.199.171):

In Reply to: Connecting motor to transmission posted by Phil on December 09, 2001 at 11:40:11:

Phil,

Since you didn't remove the clutch discs we will assume they are still centered. To be sure look into the back of the clutch and confirm that the two female splines are still concentric with the pilot bearing in the rear of the crankshaft.

My method for joining the engine and transmission with dual clutches is to have the bell housing supported with a floor jack with good rollers on a smooth concrete floor. I'll hang the engine from the hoist so that it will have some movement.

Start the input shafts into the clutches and use two long bolts with the heads removed. Insert them through the holes in the bellhousing and screw them into the threaded holes in the back of the block. They will serve as alignment pens as the two halves come together. Place the transmission in high gear and start rolling the rear half toward the engine. The engine will begin to swing away from the rear half maintaining about a 1-2" gap. Adjust the height of the engine and/or bell housing to keep the input shafts centered in respect to the clutch splines. Chock the rear wheels so that the rear half will continue to exert force on the engine while suspended on the hoist. Once you've pushed the engine about 2-3 inches swinging on the hoist, engage the PTO and go to the rear of the tractor and rotate the PTO shaft. You'll feel the splines engage. At that point, the gap between the engine and bell housing may have decreased. "Wiggle" the tractor sideways and push/rock the rear of the tractor an inch or so more. Keep the chocks under the wheels so that it is constantly pushing against the engine while it is still on the hoist.

Just repeat the PTO rotation, "wiggling", and pushing on the rear half until the gap closes. Once you get it to about a 3/4" gap screw in a couple of bolts on opposite sides and finger tighten the bolt heads. Repeate PTO rotation, "wiggling", and Pushing/rocking the rear half until it slips together.

Don't force anything. If you do, you'll push the centers out of the clutch discs.

I bought a nice IHC 354 a few years ago that the previous owner sold at auction with slipping clutches and the evidence was that it had new clutches but were destroyed during assembly.

Good luck,

Ken McWilliams
Dayton, Oh

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