B7100 removing crankshaft pulley with PTO adapter

WilGan

New member

Equipment
Kubota B7100HST D
Mar 8, 2025
13
1
3
Vernon, CT
Any advice on how to remove the crankshaft pulley/harmonic balancer? My manual does not describe it, and I would like to see a schematic before putting a puller on it.
 

Russell King

Well-known member
Lifetime Member

Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Jun 17, 2012
6,823
2,361
113
Austin, Texas
Here is one version of the B7100 From illustrated parts list at Kubota USA site (but it may not be your tractor). Under the DYNAMO SECTION for some odd reason).

Remove the bolts (blue), remove the PTO extension (yellow), then bend the lock plate out of the way (green), then loosen the nut and remove nut (red) and lock plate then pulley can be removed.

The PTO shaft is sometimes part of the crankshaft itself so that might be what you have???

IMG_0534.jpeg
 
  • Like
Reactions: 1 user

WilGan

New member

Equipment
Kubota B7100HST D
Mar 8, 2025
13
1
3
Vernon, CT
I thought this is what I have, there are three bolts which I removed, I tapped the PTO with a mallet, and it doesn't want to move. I will try again
 

Russell King

Well-known member
Lifetime Member

Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Jun 17, 2012
6,823
2,361
113
Austin, Texas
Not 100% sure but the crankshaft may extend into that removable shaft. At least the same illustrated parts list shows it extends
IMG_0535.png

You may need to remove the hood and radiator to be able to get to the removable shaft better?

@North Idaho Wolfman may be along to give you experienced advice
 

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
34,023
9,238
113
Sandpoint, ID
Not 100% sure but the crankshaft may extend into that removable shaft. At least the same illustrated parts list shows it extends
View attachment 164650
You may need to remove the hood and radiator to be able to get to the removable shaft better?

@North Idaho Wolfman may be along to give you experienced advice
Yes you nailed it, the adapter is hollow and the crank splines extends through it.
Use brake parts cleaner and clean the spline space before trying to remove it.