[jdabney]

It's time to install the throttle body (AFP) and I can't find any directions. Does anyone know where to find them? It was removed by Lycoming for shipping and replaced with a plastic blanking plate. I need to know the parts stackup and torque.

Jim Dabney

 

[bjdecker]

https://www.lycoming.com/sites/default/files/IO-390-C Parts Catalog PC-IO-390-C.pdf

See page 54, Figure 24 for the stack up.

https://www.lycoming.com/sites/default/files/IO-390-A Parts Catalog PC-IO-390-A.pdf

See page 52, Figure 23 for the stack up.

IIRC these are 4 - 1/4-20 studs; I would follow the torque values spec'd in the Van's builder manual for 1/4" bolts.

 

[jdabney]

Thanks, that's exactly what I needed.

Jim

 

[RViator60]

If it’s an Airflow Performance fuel controller, I leaned heavily on the manual for my install.
https://airflowperformance.com/wp-content/uploads/2018/12/API-Installation-Service-Manual-9003.pdf