Help with GM 14 Bolt Rear End

[SASKCHEYENNE75]

I am in the process of changing the gear oil in my truck.
1986 Chev K30 Crew Cab
14 Bolt Full Float Rear End
When I took the cover off to drain the oil it was quite dirty. There was also a fair amount of metal shavings on the magnet in the base of the housing including a broken clip. I will post pictures below. The center bolt on the passenger side was missing and I'm assuming made up the majority of the metal shavings

All the teeth look in good shape with mo other damage noted. My question is what is this bolt/clip called and can I buy just that part??

Appreciate the help!

 

[SASKCHEYENNE75]

Also I'm planning on using 80W90 gear oil is that correct??

 

[sickchev]

GM 14 Bolt Side Adjuster Lock Prong​

BillaVista.com-14-Bolt Gear Setup Tech Article by BillaVista

You must be registered for see images attach

 

[SASKCHEYENNE75]

GM 14 Bolt Side Adjuster Lock Prong​

Thank you...what the heck would cause that to break like that?

 

[sickchev]

Thank you...what the heck would cause that to break like that?

My best guess would be wrong torque when it was put in at some point. Too much torque cracked the prong and the bolt backed out with nothing to hold on.

 

[sickchev]

Also I'm planning on using 80W90 gear oil is that correct?

80W90 is fine to run

 

[SASKCHEYENNE75]

80W90 is fine to run

Great thank you

 

[Craig Nedrow]

Here is a write up on my rerarend 14FF. Go here start post 35

https://www.gmsquarebody.com/threads/1973-k20-350-to-454-swap.29840/page-3

Identify each cap, put it back where it came off. Measure your pinion depth, new oun should be close for correct tooth contact. Get some Prussian blue, or gear marking paste for the tooth contact. Yukon Gear has been very good to me.