Drain Oil on Pressure Switch Change

[capedoryus]

Hello folks. This job is finished I am happy to say. Oil pressure switch was leaking. Pretty easy once you find a big enough socket. I looked like the bikes oil pan had enough room for the oil so I started with the thought of changing without draining the oil. Once I had the switch part way out I had a thin stream of oil and sealed it back up and drained the oil. Did I have to drain the oil? Even after draining the oil the stream was about the same. Not a lot of oil but scary when I still had oil in the bike. I recorded the repair and want to do a tutorial and would like to save people the effort of draining the oil if possible. Bike is a 84 R65. Thanks in advance
John

[melville]

There's just a wee bit of oil in the galleries above the sender hole. I didn't drain to change a sender last summer and had no difficulty.

[jimborbm65]

I have a 1979 r65 .If the pressure switch you changed was under the oil sump then it was the neutral switch
and you have drained the oil from the sump.

[wookie]

The neutral switch lives under the transmission so if you remove it, you drain the trans fluid, not the engine oi

[SteveD]

Oil pressure switch is near the oil fill hole.
To change the switch, lean the bike to the right so oil won't drain out. Against a tre or something solid is good, and it doesn't need to be too far.
Undo the switch, clean the area, replace with new switch.
Don't over torque it.
Return bike to upright and jobs done.

[capedoryus]

Thanks for the replies. I wish the neutral switch was that easy to replace. I will be putting together a short video on the repair and this help alot. Thanks for the image gallery from boxerboy81, its a great collection. I am not sure if it is Steves or boxerboy 81 so please excuse is credit was misplaced. Thanks again
JOhn

[jimborbm65]

what an IDIOT I did mean the gearbox oil in my reply .You would notice it was more gooey than sump oil.
Sorry about that slip but it does show that you are paying attention !

[stone]

My oil pressure switch on the side is leaking as well. Is this something I can pick up local(auto store) od do I have to order from Bmw? 82R100

[barryh]

VW beetle switches are supposed to fit. Truth is oil pressure switches are very common and simple devices. Any switch with the correct: threads, electrical connection, contact arrangement and pressure setting would work.

As far as I can make out that means M12x1.5 parallel threads, single 6.35mm spade connector, normally closed contacts and 0.35 bar setting. Any auto parts store with a catalogue could find one to that spec.

I've seen a Wells PS102 quoted as fitting (VW beetle) but that seems wrong as it's M10.

Wells PS158 fitted to contemporary 3 & 5 series BMW cars looks about right. http://www.wellsve.com/custom_searches/ ... ubmit.y=19

[Deleted User 62]

My oil pressure switch on the side is leaking as well. Is this something I can pick up local(auto store) od do I have to order from Bmw? 82R100

The early switches similar to the ones used on VW Beetles have tapered threads, your bike needs one with straight threads and a washer.