Update on my hi-miler Z project - ZR-1 Net Registry Forums

VetteMed · 02-14-2012

Next step is the removal of the throttle plate shaft and bearing assembly.

View of the shaft, in the intake port

View of the external portion of the shaft

A socket is fit over the threaded end of the shaft (I used a 5/8"). The key is that the hex end of the socket must be large enough to accomodate the bearing as it's pulled out of the cylinder head, yet small enough to fit flush on the flat surface surrounding the bearing.

A fender washer is then placed over the threaded end of the shaft that protrudes through the square end of the socket

The actuator arm nut is then threaded back on to the shaft, and carefully tightened against the washer, which will then pull the entire bearing assembly out of the head. A needlenose pliers, with a rag or towel as cushion, is used to grasp the throttle shaft to prevent rotation.

Done! 7 more to go!

02-14-2012	#11
VetteMed Join Date: Mar 2009 Location: Orlando, FL Posts: 1,816	Re: Update on my hi-miler Z project Next step is the removal of the throttle plate shaft and bearing assembly. View of the shaft, in the intake port View of the external portion of the shaft A socket is fit over the threaded end of the shaft (I used a 5/8"). The key is that the hex end of the socket must be large enough to accomodate the bearing as it's pulled out of the cylinder head, yet small enough to fit flush on the flat surface surrounding the bearing. A fender washer is then placed over the threaded end of the shaft that protrudes through the square end of the socket The actuator arm nut is then threaded back on to the shaft, and carefully tightened against the washer, which will then pull the entire bearing assembly out of the head. A needlenose pliers, with a rag or towel as cushion, is used to grasp the throttle shaft to prevent rotation. Done! 7 more to go!