BCM Community

Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: bevans6 on September 11, 2017, 12:00:16 PM

Title: MT-647 install blog with pictures!
Post by: bevans6 on September 11, 2017, 12:00:16 PM
Well, the wheels are going back on today so I must be close to finished.  I thought some who haven't completely given up on me might like to see a couple of pictures of my trans fluid cooler install, my drive shaft and my bump stop with spacers.  Driveshaft is 13.75" long, shortest distance as installed, between the U-joint yokes.  I used the original flange mount on the drop box end and had the transmission shop install a yoke directly on the transmission output, 1710 U joints as stock.  All the driveshaft is is a male and female spline yoke, put together.  There is no tube.

Title: Re: MT-647 install blog with pictures!
Post by: bevans6 on September 12, 2017, 11:12:01 AM
Well, it started and ran today, set the fluid levels and drove it around my yard.  I'll finish putting bumpers and such back on tomorrow, check to see if any of the lights still work and take it for it's inspection on Friday or Monday.  Then I can renew the license and drive it around a bit.

Brian
Title: Re: MT-647 install blog with pictures!
Post by: luvrbus on September 12, 2017, 11:55:11 AM
LOL I see the u-joints are out phase  ;D ;D
Title: Re: MT-647 install blog with pictures!
Post by: chessie4905 on September 12, 2017, 02:17:13 PM
Cliff,I would hope that is an optical delusion or easily correctible by a!igning splines. My 4905 has a very short driveshaft like that.
Title: Re: MT-647 install blog with pictures!
Post by: bevans6 on September 13, 2017, 03:58:10 AM
He's laughing because several guys on another forum didn't believe that an MCI MC-5 always has the driveshaft out of phase.  It's because the engine is angled with respect to the rear axle, so one end of the driveshaft is essentially straight and the other end is at an angle.  I should measure the angle sometime.
Title: Re: MT-647 install blog with pictures!
Post by: Oonrahnjay on September 13, 2017, 06:30:10 AM
Quote from: bevans6 on September 13, 2017, 03:58:10 AMHe's laughing because several guys on another forum didn't believe that an MCI MC-5 always has the driveshaft out of phase.  It's because the engine is angled with respect to the rear axle, so one end of the driveshaft is essentially straight and the other end is at an angle.  I should measure the angle sometime. 

       Thanks.  That's the way that the Cummins/Allison/rear axle is set up on the Gillig donor for my new drivetrain, I think it's the same way -- the pumpkin is offset to the side a bit.  "Hard Headed Ken" (Ken Arnold) says that it's a good thing to keep those angles down to the minimum possible - esp. with a short drive shaft - but with that offset on the rear diff, I'm stuck with some angle there.