Forced regen

[DonRybak]

I have about 80 hours on my 2018 37HST and I have never had the regen light come on. I have seen others say that they got them at varying hours but most were at 50 hours give or take. I asked the tractor guy at the store I purchased it from when I had a little over 50 hours and he said that the regen was triggered by soot build up. I pretty much run mine in the 2300 - 2500 rpm range and very seldom does it idle. The tractor guy said that because I keep higher rpm's things are staying cleaner and not to worry. I now have an additional 30 or so hours and still no regen. Does anyone know if there a way to manually start a regen? I have a regen button that per the manual I'm suppose to push to start a regen once the button starts flashing that the computer senses a regen is required but I'm not sure if that would do anything with out the request. I'll probably be heading down to the store within the next week and I'll question them again. Sure wish we had a RK rep on here like we use to. Have a great weekend......Don

 

[Btown]

The hotter the exhaust, higher rpm’s will cause it to passive regen. An active regen the engine dumps raw fuel on the exhaust stroke into the cylinder and is pushed out by the piston and when it hits the DPF the fuel ignites and burns down the soot. Higher rpm’s cause less soot and the heat from this, especially if used for longer periods of time will burn the soot from the heat. Could something be wrong. It’s possible, but it does not sound like there is anything wrong.

 

[DonRybak]

Thanks for the reply Btown but I don't believe that the RK37 does a passive regen. My Ram truck does that but unlike the RK55 where you can continue to work during a regen the RK37's is different. There's an illuminated switch on the dash that flashes when it receives the regen request from the computer. The manual says that when that switch flashes you must park the tractor, apply the parking brake, and press the regen switch for 3 seconds. That raises the rpm to 2200 and starts the regen process which takes 30 - 40 minutes to complete. Once complete the light goes off and the rpms drop to idle. I had thought that maybe the bulb was bad in the switch since it doesn't illuminate during the initial turn on of the ignition like the dash lights but the tractor runs perfectly. I will probably be going to Rural King over the weekend and I'll see what they say...…..Don

 

[DonRybak]

Went to the store today and talked to the lead rep. He asked what rpm I run the tractor at and I told him that most of the work the tractor does is pasture mowing. He said that running the motor at 2200 rpm and above will burn most of the soot our of the filter. He said those engines that run most of the time in the 1500 - 1800 rpm range or are allowed to idle a lot will have a much earlier regen cycle due to soot build up on the sensor. For now I guess I'll just keep on trucking.