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**Stocker** · 05-07-2015, 07:13 PM

Welcome to the board! That is an Eaton HO52. I believe that is called a load bolt, or a pinion preload bolt. Can't tell you what to do with it, hopefully someone else will chime in. In 38 years I've never needed to mess with mine.

Eatons are tough as nails but some parts can be hard to come by. Try your local NAPA or other parts store if you need anything for it.

Edit: If you need to do brakes, check this link: http://67-72chevytrucks.com/vboard/s...d.php?t=660022

05-07-2015, 07:13 PM	#2
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,538	Re: what differential is this? Welcome to the board! That is an Eaton HO52. I believe that is called a load bolt, or a pinion preload bolt. Can't tell you what to do with it, hopefully someone else will chime in. In 38 years I've never needed to mess with mine. Eatons are tough as nails but some parts can be hard to come by. Try your local NAPA or other parts store if you need anything for it. Edit: If you need to do brakes, check this link: http://67-72chevytrucks.com/vboard/s...d.php?t=660022 __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay Last edited by Stocker; 05-07-2015 at 07:25 PM.