If you use or service Chelsea PTOs for the DT12n transmissions, you should be aware of this product update announced by Parker Chelsea.
Effective immediately, Chelsea Products Division (CPD) is implementing a change to the indicator switch used on select PTO models designed for the DT12 transmission.
Below is a summary of what’s changing and what it means for you.
What’s Changing?
The current one-pole indicator switch (Part #380515) is being replaced with a two-pole indicator switch (Part #379990) on the following PTO series:
• Chelsea 489 Series PTO
• Chelsea 680 Series PTO
• Chelsea 880 Series PTO
• Chelsea 823 Series PTO
This update specifically affects:
• The “5” shift option for the Chelsea 489 and 680 series PTO
• The “V” shift option for the Chelsea 823 and 880 series PTO
The indicator switch confirms PTO engagement, making it a critical component for proper operation and operator awareness.
One-Pole Switch
Two-Pole Switch
Why the Change?
According to Parker Chelsea, this update aligns with their ongoing commitment to:
• Improved product quality
• Enhanced reliability
• Better overall customer experience
Upgrading from a one-pole to a two-pole switch provides improved functionality and consistency in PTO engagement confirmation.
What This Means for Users & Upfitters
If you:
• Order new PTOs for DT12 transmissions
• Service or replace indicator switches
• Maintain inventory for Chelsea 489, 680, 880, or 823 series
You should ensure that you reference and stock the new two-pole switch (379990).
When servicing existing units, always verify the PTO model and shift option to confirm compatibility.
If you need assistance, please contact us or the Parker Chelsea Product Division:
