A number of people have mentioned that dealers are now recommending a new part for replacing the oil pressure sensor - usually, the new one is part number 641541. Our friends at AF1 Racing cross-reference this to earlier part numbers (ex AP9150414) (ex AP0956169) (ex AP8550512) (ex GU31768780).
Note that last one - it's the infamous oil pressure sensor used on many Moto Guzzis, the one with the nail-top head! The replacement, however, uses a spade-style connector, and there's (literally) the rub. On the newer big blocks, the alternator may be very close to the top of the sensor, and use of a standard connector may be a problem.
Old sensor design at left, new style at right:
I've come up with a possible solution that allows use of either of these sensors, and that should work in almost any bike. It can be installed with minimal tools or skill; if you can get to the sensor, you can install this changed wiring. I can't change the location of the alternator or the height of the sensor, but this should solve the problem for many of you!
The actual work is to clip the old wiring just behind the boot connector, and remove that frustrating part. The kit includes a fully insulated crimp connector and a small sleeve of adhesive-lined shrink-wrap tubing. Slide the tubing onto the wire that's still left, strip the tip of the wire, crimp on the supplied connector, and then slide the shrink-wrap up into place. When you heat it, it will tighten up - and the adhesive will seal the joint!
Now, select the correct pigtail for the type of sensor you have. The old style sensor uses the slide-on clip instead of the unwieldy boot. Attach the slide-on clip to the sensor, and attach the other end to the connector you just installed. If you have the new sensor, use the pigtail that has the 'flag' connector at the end. Slide the flag over the sensor's spade connector, and again, plug the other end into the connector you just installed.
The supplied pigtails have been assembled using proper crimping tools and adhesive-lined shrink-wrap on all connections, and have been continuity and resistance checked.
Here's the tricky part - how do you get this easy-to-install problem solver?
EASY!
I am offering, while supplies last, postage and handling included within the US and Canada, one of these kits for free (as in beer!) - to anyone who asks, with only one condition: you must have given a donation to the operator of this forum in 2015. I don't care if the donation was big or small, but it must be in the current year.
This is a way for me to contribute back to the Guzzi community and to encourage support for the forum operators, and hopefully to get each of you to consider helping them too.
I will post pictures of the kit wiring as soon as I receive the slide-on connectors (in the next few days), and will have them ready to ship in about a week or so.
Note that last one - it's the infamous oil pressure sensor used on many Moto Guzzis, the one with the nail-top head! The replacement, however, uses a spade-style connector, and there's (literally) the rub. On the newer big blocks, the alternator may be very close to the top of the sensor, and use of a standard connector may be a problem.
Old sensor design at left, new style at right:
I've come up with a possible solution that allows use of either of these sensors, and that should work in almost any bike. It can be installed with minimal tools or skill; if you can get to the sensor, you can install this changed wiring. I can't change the location of the alternator or the height of the sensor, but this should solve the problem for many of you!
The actual work is to clip the old wiring just behind the boot connector, and remove that frustrating part. The kit includes a fully insulated crimp connector and a small sleeve of adhesive-lined shrink-wrap tubing. Slide the tubing onto the wire that's still left, strip the tip of the wire, crimp on the supplied connector, and then slide the shrink-wrap up into place. When you heat it, it will tighten up - and the adhesive will seal the joint!
Now, select the correct pigtail for the type of sensor you have. The old style sensor uses the slide-on clip instead of the unwieldy boot. Attach the slide-on clip to the sensor, and attach the other end to the connector you just installed. If you have the new sensor, use the pigtail that has the 'flag' connector at the end. Slide the flag over the sensor's spade connector, and again, plug the other end into the connector you just installed.
The supplied pigtails have been assembled using proper crimping tools and adhesive-lined shrink-wrap on all connections, and have been continuity and resistance checked.
Here's the tricky part - how do you get this easy-to-install problem solver?
EASY!
I am offering, while supplies last, postage and handling included within the US and Canada, one of these kits for free (as in beer!) - to anyone who asks, with only one condition: you must have given a donation to the operator of this forum in 2015. I don't care if the donation was big or small, but it must be in the current year.
This is a way for me to contribute back to the Guzzi community and to encourage support for the forum operators, and hopefully to get each of you to consider helping them too.
I will post pictures of the kit wiring as soon as I receive the slide-on connectors (in the next few days), and will have them ready to ship in about a week or so.