Speed Control / Quadrant "pork chop"

[57chevy]

After bringing my "new to me" 500, I found the teeth on the porkchop stripped. I ordered a new Quadrant Assembly ( porkchop ) and when I removed the roll pin, I couldn't decide which piece ... porkchop or housing captures the roll pin and which piece the roll pin rotates in.

I'm thinking since the roll pin was holding both pieces pretty tight, that might have been why the gears were stripped. ( ??? )

Is there any drill size that I could use to gauge the hole sizes to get this right during assembly ?

Thanks in advance

Don R.

[billmayo]

The roll pin Is captured in the pock chop (quadrant) and turns inside the arms on the housing.

The aluminum pock chop teeth get stripped when the speed control handle is turned to slow without the motor operating or quill being turned. If the control sheave sticks on the idler shaft, the same problem can occur or the retaining loop is pulled off the control sheave. Be sure to oil the sheaves at this time.

Bill Mayo

After bringing my "new to me" 500, I found the teeth on the porkchop stripped. I ordered a new Quadrant Assembly ( porkchop ) and when I removed the roll pin, I couldn't decide which piece ... porkchop or housing captures the roll pin and which piece the roll pin rotates in.

I'm thinking since the roll pin was holding both pieces pretty tight, that might have been why the gears were stripped. ( ??? )

Is there any drill size that I could use to gauge the hole sizes to get this right during assembly ?

Thanks in advance

Don R.

[charlese]

I might add to Bill's post that the quadrant is cast aluminum, while the worm gear is steel. With inadequate lubrication of the idler shaft, wear will occur and the teeth in the quadrant will wear prematurely. I know - I did this.