NEED HELP: 1200 2V - Instructions for replacing Oil Pressure Unit

[willowstreetguzziguy]

In 2016, after washing my 1200 Sport, the Red light comes on. Dealer says the Oil Pressure Sending Unit is DEAD. Hard time getting the right part, 3-trips to dealer and its replaced in July.

Washed my bike 2-weeks ago and the light comes on AGAIN. Yep...Dealer diagnoses a DEAD Oil Pressure Sending Unit again. Supplier agrees to cover the cost of the unit and will send me a new one.

I want to replace it myself this time and maybe try to figure it out and waterproof it. Could someone give me detailed instructions of how to get to the unit to replace it on a 1200 2V engine?

[i HONK]

More than happy to assist, I've done several and have a modified end wrench that would help. It is a PITA exercise,
Randy

[pete roper]

While the switches are pretty crappy the fact that this is occurring just after washing makes me think that it's more likely in this case to be simply the water shorting the current to earth. Blowing it good and dry and waterproofing it will most likely see it right.

Anyway while you can, if you hold your tongue in the right position and remove the LH header pipe, replace the switch without too much hassle it's probably best in these circumstances to pull the tank and airbox, (Be careful of the drain spigot!) to get access from the top. That way you can add and seal a suitable boot over the switch to keep the water out.

Pete

[willowstreetguzziguy]

More than happy to assist, I've done several and have a modified end wrench that would help. It is a PITA exercise,
Randy

Randy, Do you have any step by step instructions to help? Or do you live near me?

[willowstreetguzziguy]

Does it require any special tools? How do I get in there to get it?

[pete roper]

From memory it's a 21mm hex on the switch. No special tool required but it's a bit of a prick to get to and the alternator sits very close to it.

Pete

[Kiwi Dave]

I use a flat 21mm ring spanner when coming in from the LH side after removing the header.

It helps to temporarily remove the phase sensor that stops you getting good access to the oil pressure switch.  Just watch you don't lose any of the shim washers underneath it.

[JohninVT]

As mentioned, it's a PITA to get to.  However, if you use a crow's foot you can swap it without tearing everything apart.

[Old Jock]

Is it the same as on a lot of the other 2V engines?

Near the timing chest at the top?

If it is then I've a couple of things to add.

Used to have a Daytona and when I washed it did exactly what Pete states. After the bike was ridden for 20-30 minutes it went out, water shorting the switched negative to earth.

I eventually lost patience with it and opted to install a different better quality switch anyway as it's not the best and they seem to be getting harder to find.

You can do this by purchasing some hose and fittings, it's not a cheap solution but it allowed me to also then route the hose up and fit a pressure gauge too

This is on a LM 1000 engine, showing the hose exiting the engine from the point where the standard switch is installed, but if it is like the rest of the 2V (and some of the 4V) it will be the same. I also did the exact same thing on an 1100 Sporti too. Just trying to alert you to other possibilities, you don't have to stick to Guzzi parts.




 

[willowstreetguzziguy]

Is it the same as on a lot of the other 2V engines?

Near the timing chest at the top?

If it is then I've a couple of things to add.

Used to have a Daytona and when I washed it did exactly what Pete states. After the bike was ridden for 20-30 minutes it went out, water shorting the switched negative to earth.

I eventually lost patience with it and opted to install a different better quality switch anyway as it's not the best and they seem to be getting harder to find.

You can do this by purchasing some hose and fittings, it's not a cheap solution but it allowed me to also then route the hose up and fit a pressure gauge too

This is on a LM 1000 engine, showing the hose exiting the engine from the point where the standard switch is installed, but if it is like the rest of the 2V (and some of the 4V) it will be the same. I also did the exact same thing on an 1100 Sporti too. Just trying to alert you to other possibilities, you don't have to stick to Guzzi parts.

Appreciate the picture and advice. This will be a winter project.

[Old Jock]

No probs if you want details of what I used and the fittings I can supply them, just drop me a PM whenever you are going in to look at it