Are Cat backhoe buckets interchangeable across the different 416 and 420 models? Like a 416c to and a 420D.
In theory yes Coupler design and specs will determine everything or a lack of coupler throws another curve in there as well What's the coupler
Bucket pins straight to dipper arm.
There are minor differences from say a 416c to a jd 310 sl hl the pins are different sizes not much just enough Pin sizes can most likely be accommodated by changing bushings but some models have a different spacing for the ears on the bucket to fit a different width dipper