Adel clamp on sump bolts

[crabandy]

I'm running the wires for the alt/starter and plan on securing the wires to the sump bolts via adel clamps. Should I discard one of the flat washers to make up for the thickness of the adel clamp or get longer bolts? If I need longer bolts what # and where to get them.
Thanks,
Andy

[DanBaier]

They do make longer bolts - my parts manual is at the hangar but I think the parts are LW-25-0.94 for the 1/4x20 15/16" and LW-25-1.13 for the 1/4x20 1 1/8". If I recall, Lyc says these should be locally available but last summer when I overhauled an O-360, I wound up just getting hardware from an engine shop.

I've forgotten exactly what the Van's FWF plans call for - my solution was to use large adel clamps on the intake tubes that I attached to smaller adel clamps to hold the wiring. Leave some slack - for when the engine rocks around in the mount.

Dan

[Captain_John]

From a practical standpoint, the washer serves as a bearing surface for the fastener to rotate upon.

Theoretically, the adel would provide the same bearing surface.

I am looking at doing the same things as you are so I am interested in the response of others as far as their interpretation of AC 43.13b and how people are actually assembling these components.

Good question!

CJ

[jtrollin]

Was to replace the thick washer with a thin one to use with the clamp.