OK here's what you do: you can hardly see this switch as it is near
the centerline of the engine, behind the water pump pulley. You have
to go through all the BS to remove the AC and PS belts because of
course the alternator/WP belt is in the back. Take a BIG pair of
pliers to hold the WP pulley sheave and remove the three 13mm bolts
that hold it to the hub. Remove the pulley. now you can feel the
sensor, but you can't see it. Remove the wire/connector by feel.

Go below and identify the flats of the sensor body by shining a light
in the 3/8" crack past the mounting bar. Get a long pointed drift or
punch and figure out which way to tap it to loosen it and apply a few
taps with a hammer until it unseats. Go back up top and remove it by
hand (easy), swap the new with the old, then go back underneath and
catch the punch in the flats and tap it tight with a hammer. Reconnect
the wire, put the pulley back on, put the belts back on.

For various reasons I won't go into I have done this twice in the last
month, so it is fresh in my memory.

Jim

On Wed, Aug 19, 2009 at 9:20 PM, Mark<mbrush@gmail.com> wrote:
> Hey Jim -
>
> Wow - that must be the other oil pressure switch that I haven't found yet
> (haven't gone looking yet, either).� I switched out the switch on the side -
> the one between the push rod tubes.� Pretty easy with a long socket.� I
> think the other one is tougher to get at.� Might have to take a part off or
> something - not sure.
>
> Mark
>
> On Tue, Aug 18, 2009 at 10:07 PM, Jim Felder <jim.felder@gmail.com> wrote:
>>
>> Mark,
>>
>> How did you change out the oil pressure switch on the front? I've got
>> a pretty good set of tools but nothing that would work on that. I
>> ended up hand tightening and going underneath and pecking it tight
>> with a long, sharp punch on the flats.
>>
>> Jim
>>
>> On Tue, Aug 18, 2009 at 8:49 PM, Mark<mbrush@gmail.com> wrote:
>> > I had two oil leaks recently - one from the oil cooler and one from the
>> > oil
>> > pressure switch (the blue one). �Inexpensive parts and a little elbow
>> > grease
>> > fixed both. �You gotta crawl under clean off the underside of the engine
>> > a
>> > bit and watch - it's kinda fun, in a sick way :-)
>> >
>> > Mark
>> > 1990 GL Westy
>> >
>> > On Tue, Aug 18, 2009 at 4:31 PM, Douglas and Annie Dodson-M�uck <
>> > primalflow@suddenlink.net> wrote:
>> >
>> >> Hello all,
>> >>
>> >> I have oil leaks that I need to address and was wondering where the
>> >> most
>> >> common suspected points of origin might be?
>> >>
>> >> The individual from whom I purchased it said that he thought one of the
>> >> crankshaft seals could be the culprit. �The leaks do appear to dripping
>> >> from
>> >> both ends of the engine though that could also be the result of one
>> >> leak
>> >> trailing to another location, pooling then dripping, right?
>> >>
>> >>
>> >> I've always been fortunate with all of the vehicles in my possession
>> >> and
>> >> have been able to get by with only minor repairs, replacements,
>> >> upgrades or
>> >> maintenance, so please bear with my apparent lack of knowledge
>> >> concerning
>> >> what may possibly require a more involved wrenching experience.
>> >>
>> >>
>> >>
>> >> ~ Doug
>> >>
>> >> '87 VanaGL 2WD
>> >>
>> >
>> >
>> >
>> > --
>> > Mark
>> > 1990 Westy (2.1 - manual)
>> >
>
>
>
> --
> Mark
> 1990 Westy (2.1 - manual)
>