Author Topic: 75 KZ400D Balancer Issues  (Read 1609 times)

Offline sosedoff

  • Posts: 33
Re: 75 KZ400D Balancer Issues
« Reply #10 on: Dec 19, 2017, 01:48:55 »
For anyone who might find this thread useful, i got back to the rebuild and did drill/tap/insert a helicoil today.

Since the thread was pretty long i had to locate the longer inserts, 3D-size worked well (3-x of the bolt diameter).
These are shipped from Japan, unfortunately. Before doing the job on the case i first tested the procedure on a block
of wood just to make sure i wasn't doing anything wrong.

To drill the thread i had to remove the metal dowel that sits underneath the balancer bearing. This was a bit
tricky, but after soaking it with BP Blaster i was able to wiggle it out with pliers, that did leave some small
bite marks which i later smoothened out with a wire wheel.

I haven't finished the final assembly yet, but i noticed something: when i put the bolt back in about half way it
does not feel snug, i can feel a slight movement (left/right), same happened with the wooden block i was testing
first. When the bolt is fully in it feels alright.

Did i mess something up?

Offline XS750AU

  • *
  • Posts: 472
Re: 75 KZ400D Balancer Issues
« Reply #11 on: Jan 10, 2018, 04:46:28 »
As long as you achieve the specified torque you are ok.

Sent from my SM-G900I using DO THE TON mobile app

“Engineering is the art of being approximately right rather than exactly wrong.”

Yamaha XS750-2D
Yamaha XS896
Husaberg FE550
Yamaha TT250
Yamaha IT200N

Offline sosedoff

  • Posts: 33
Re: 75 KZ400D Balancer Issues
« Reply #12 on: Jan 21, 2018, 03:05:36 »
To follow up: everything worked out pretty good.