Ok I did some digging today on my CAT website. Here is the maintenance manual for combined models that includes the 434E. The illustrations may be helpful to gleen some details. There are some decent axel shots as well and it talks about operation a little regarding the individual parts.
https://dealer.cat.com/content/dam/dealer/ps/repair-options/self-service-options/Service%20Instructions/backhoeloaders/PM3-JBA_NBA_EME_SEF_DPH_SJL_MAW.pdf
Let me know if the link doesn’t work. It works for me but I am an employee haha.
