82 R65LS oil pressure switch replacement

[jgp1854]

Need to replace the switch, does it require a special size socket to remove it from the engine block?  Are there any pitfalls I need to worry about, or is just straight forward, unscrew and re-install?

jgp

[Bob_Roller]

It's a straight forward job .

I think it's a 19 mm, been a while since I replaced one, it's a common size, no special tools required .

Probably wouldn't be a bad idea the replace the aluminum crush washer / seal while you're at it .

[montmil]

Should your local BMW dealer be out of stock, Euro Motoelectrics has them.

http://www.euromotoelectrics.com/SearchResults.asp?Search=oil+pressure+switch

Some chatter about using a VW sender but the talk also mentions a possible variance in the pressure activation between BMW v VW. Plus, there is a concern regarding the threads. Advise staying OEM on this inexpensive part.

[georgesgiralt]

Only think to know is to lean the bike on it's right cylinder in order to contain the remaining oil in the bike instead of your shoes...
Watch the way you return the bike to it's stand in order to save the spine of your back...

[jgp1854]

any torque specs, or just snugged up.

jgp

[Justin B.]

IIRC, the VW sender is a "pipe-thread" where ours uses a straight thread.  I've used one from a mid 80's BMW car (local parts house in an emergency) but it was actually about $4 more than euromotoelectrics!

[jgp1854]

George
Are you serious about leaning the bike over to the right cylinder?
jgp

[steven m]

I didn't lean my bike over and completed the job in about five minutes.  Of course, the bike was cold as it should be when working on it.  You will want to clean the block, wires, and connector before removing the old sensor, as when the sensor needs replacement it is probably leaking.  Get out your toothbrush!  Do not overtighten.
If only the pushrod tube gaskets were this easy...

[georgesgiralt]

Yes, I'm serious.
The ports in the crankcase are full of oil. If you remove the manometer without leaning the bike on the right hand cylinder, this oil will go down.
And you'll have to clean after it.
My grand mother told me it's better not to make a mess than to clean up after...
Cost nothing and makes access easier. Why not ?

[Bob_Roller]

While you're replacing the switch, look at the wire for the oil pressure switch, not uncommon to have the insulation crack and come off .

Heat shrink on the wire will work, without replacing the wire .

Take a look at the transmission neutral switch also, the wires here, do the same thing .