642 Bobtach bushing

[Cyclone Ranger]

Does anyone happen to know the OD of a bobtach bushing for a 642. My bobtach is the older square tube design. The book calls for PN# 6562067 but this part looks to be 0.010” too large. My old bushing measures 1.428” and the new bushing measures 1.438”. The hole OD is 1.428” as well. I don't see any signs that anything has been changed from stock parts but I can't explain the difference.

 

[renopker]

I 'm picking up some today and am going to compare the early one and later ones.

 

[renopker]

I 'm picking up some today and am going to compare the early one and later ones.

1.438 X 1.258 X 2.083 must be .010 press

 

[Cyclone Ranger]

1.438 X 1.258 X 2.083 must be .010 press

It takes roughly 15 tons of force to insert a 1.500“ shaft 2“ into a 1.490” hole. I'm going to need a smaller bushing, a bigger hole or a bigger press.
Renopker - Could you measure the bore OD on your bobtach for me?

 

[renopker]

It takes roughly 15 tons of force to insert a 1.500“ shaft 2“ into a 1.490” hole. I'm going to need a smaller bushing, a bigger hole or a bigger press.
Renopker - Could you measure the bore OD on your bobtach for me?

I could ,I did, But mine has no bushings in it any more and of corse its big. Part of the reason for building a new tach.

 

[renopker]

I could ,I did, But mine has no bushings in it any more and of corse its big. Part of the reason for building a new tach.

flap wheel or cartage roll time

 

[mrdeere1959]

flap wheel or cartage roll time

I only see one bushing for 642 doesn't matter what ser# and it is 6589665

 

[mrdeere1959]

I only see one bushing for 642 doesn't matter what ser# and it is 6589665

the part # you have comes up for these models, 530 533 540 542 543 630 631 632 730 731 732 741 742 743

 

[renopker]

the part # you have comes up for these models, 530 533 540 542 543 630 631 632 730 731 732 741 742 743

Yup thats the #s on the ones I picked up today.

 

[Cyclone Ranger]

Yup thats the #s on the ones I picked up today.

I have two bushing options in the 641 parts manual I have. One is for the square tube bobtach which is 6562067 which measures 1.438 x 1.258 x 1.830. The other is for the more triangle shaped bobtach which is 6534387.
6589665 has the same ID and OD but is 2.083 in length.

 

[renopker]

I have two bushing options in the 641 parts manual I have. One is for the square tube bobtach which is 6562067 which measures 1.438 x 1.258 x 1.830. The other is for the more triangle shaped bobtach which is 6534387.
6589665 has the same ID and OD but is 2.083 in length.

I asked the dealer and only the 6589665 came up in the system.