The Ford Barn

JD4430 · 05-14-2026, 08:59 PM

My question is in regards to the rear part of the coupling shaft assembly that attaches to the backside of the #3 frame cross member on my 1930 Model AA four speed truck. (The front part of the coupling shaft attaches to the transmission). My truck is an AA 131 in length.

Is there supposed to be a grease zerk someplace either on the housing rear support (AA-4808-B), or on the outer U-joint housing assembly (A-4520-C)? These parts on my truck do not have a grease zerk. The drawings of the coupling shaft as shown by Neil Wilson in 2021 on the FMAATC website also do not show a grease zerk. I also noticed there are 2 round holes on the inner U-joint housing (A-4513-A) on my truck.

With no grease zerk how would the U-joint get any grease?

Any help would be appreciated.

05-14-2026, 08:59 PM	#1
JD4430 Member Join Date: Feb 2024 Posts: 31	coupling shaft assembly on AA Truck with 4 speed transmission Transmission My question is in regards to the rear part of the coupling shaft assembly that attaches to the backside of the #3 frame cross member on my 1930 Model AA four speed truck. (The front part of the coupling shaft attaches to the transmission). My truck is an AA 131 in length. Is there supposed to be a grease zerk someplace either on the housing rear support (AA-4808-B), or on the outer U-joint housing assembly (A-4520-C)? These parts on my truck do not have a grease zerk. The drawings of the coupling shaft as shown by Neil Wilson in 2021 on the FMAATC website also do not show a grease zerk. I also noticed there are 2 round holes on the inner U-joint housing (A-4513-A) on my truck. With no grease zerk how would the U-joint get any grease? Any help would be appreciated.