Oil Pressure Sending Unit, Crush washer? Options

[Allan]

I noticed that when I pulled my motor apart the oil pressure sender had no washer under it and there wasn't one in the gasket kit. Does it normally have one?

Thanks

[dmenche914]

It is a tapered thread. One caution with Teflon tape, is that if any bits of it get in the oil system, the Teflon bits might clog one of many small oil passages, starving a part of oil, so use a small amount of the tape, and donot let any tape hang past the end of the threads, in fact, leave a couple threads at the end bare to safe guard against torn bits of tape getting in the system.

Being a tapered thread, you need to know when to stop with the torque I believe it is listed in one of the manuals. It is very easy to overdo the torque, and keep going until you have bottomed out, then it will not seal unless you washer it , or best bet is to repair with a 1/8 inch pipe thread pipe, and union.

It was even more a concern on the old Type 1 VW cases made of the softer, but lighter magnesium rather than the type IV aluminum.