OK, open up the TM. Go to page 87-2, (PDF page # 41
And you see a picture of the cable. Figure 6, Item #1.
Go to page 87-3, (PDF page # 419) You see THREE cables listed. To know what cable fits your trailer, you kneed to know what UOC, (Useable On Code) the M101A3 has.
Go to page 0081-6, (PDF page # 392) There is a list. The M101A3 has a UOC of TC1. That is your UOC, for your trailer.
Go to page 87-3, (PDF page # 419) The top cable shows:
2530-01-429-8346 92867
15641501 CABLE AND CONDUIT A 74 INCHES LONG
UOC: CT1,
TC1 .............................................
This is the cable you want.
2530-01-429-8346 is the NSN, (national Stock number).
15641501 is the part number.
92867 is the supplier of the part to the military.
The rubber bumper is in Figure 18. So, this is a test. You look it up, and post here what you find, so we can see if you understand how to find parts.
If you get this right, then finding the bearing should go easy.