I have a book for the No4. Rippers 58D1-up and 87H1-up but they don't have the round top links. The parts book is dated September 1966. There is one on ebay dated Juiy 1977 with the same serial number range.
What I want to do is build my own set of rippers and I am hoping that the top links on the rippers are the same as the top links on the front main arm frame.
Regards
Phil
944A - Machine SN 43A2589 Engine SN 90A284
955K- Machine SN 71J3772 Engine SN 83Z0704
D6 SN's 4R732sp, 5R2724, 5R4832
D8 SN's 15A1254, 15A2287, 15A2723