Tomasso Nov 10, 2019:

Manual, Semi Automatic, fully hydraulic automatic Methods of positioning Wishbones in picture one between the two very large weight bearing pins. I do not like the ideas of trusting semi or fully hydraulic automatic system, get off and do it right.

Tomasso Nov 10, 2019:

John Deere look at ;http://edgeattach.com/spring-loaded-quick-attach-coupler-for...
Note security devices, two are going through large pin, one is spring loaded old style 3 point attachment system, two types of security , when removed the large pin or pins can be removed, (too many of these things are called PIN, whether small or large) the ideas to remove the smaller security devices, pull out the large PINS, that only be removed in one direction, put the 2 wishbone between the pins, push the pin back in, install safety (smaller pins, not directly weight bearin) Look for picture of Wishbones none of is automatic, and requires operator to get off of tractor, wheel tractor or D5 with tracks. not really easy.
Look at Wiki, dog bone shaped in 1 st picture ;https://en.wikipedia.org/wiki/Quick_coupler

Goes onto explain quick hitch, etc 3 types Quote; Manual
The operation of this type is done, usually by the use of tools, at the coupler itself. The operator needs to leave ,, (usually the cab) to go to the end of the work equipment in order to effect the release of a bucket or attachment, and to do the same in order to attach the next bucket or

Tomasso Nov 10, 2019:

Quick coupler? ENg https://autoline.info/-/sale/quick-couplers/excavator/--1905...

Look at CLIP PINs at; https://www.billstractor.net/3imatclpinki.html spring loaded clip for old fashioned 3 point system behind tractors.

Look at ;https://autoline.info/-/sale/quick-couplers/excavator/--1905...
The quick coupler is two large pins between 2 plates, note on of large pins has removable CLIP PIN in one of the large pins, you pull out the clip and then remove it, the other tool is like 2 parrallel wishbones, the ends of the wishbones go up against one pin and then place other end so the large pin prev removed can be put back in and the clip ring put back in, the two wishbones are now captive and can not get out of there. am trying to find better picture, hard to visualize if one has not used it.

Richard Purdom (asker) Aug 7, 2019:

I think they are spindle securers or something from a quick coupler, but can't find anything reliable

Michael Beijer Aug 7, 2019:

see also COUPLERS - EXCAVATOR
PIN GRABBER COUPLER
From the operator's seat, visual and audible indicators help assure attachment is coupled. Your Cat excavator hydraulics, mechanisms inside the coupler, and digging forces all work together to assure the attachment stays engaged. The Cat Pin Grabber Coupler meets or exceeds applicable safety standards allowing you to work anywhere in the world. This coupler is weighted right to allow big bucket payloads. It's sized right for excellent breakout force and digging power.

https://www.cat.com/en_GB/products/new/attachments/couplers-...

Michael Beijer Aug 7, 2019:

hmm I compared a NL and EN version of a PDF about a Caterpillar excavator I found online:

4.2 HYDRAULISCHE SPIEBEDIENING ........................................................ 17
4.2.1 Hydraulische aansluitpunten voor de spiebediening ......................................................... 18
4.3 MONTEREN VAN DE KANTELBARE CONNECT’O’MAAT® AAN DE GRAAFMACHINE ...................................... 18
4.4 MONTEREN VAN HET SPIEBEDIENINGSSYSTEEM ................................................................................... 19

=

4.2 HYDRAULIC KEY OPERATION .......................................................................... 17
4.2.1 Hydraulic connections for the key operation ....................................................................... 18
4.3 MOUNTING THE TILTABLE CONNECT’O’MAAT® ON THE EXCAVATOR ....................................................... 18
4.4 MOUNTING THE KEY CONTROL SYSTEM ...................................................................

and then looked at James's suggestion, and think it's this:

https://www.cat.com/en_GB/products/new/attachments/couplers-...