Little Princess
New Member
Hi,
I’m new to the forum and recently experienced an overheating situation with my starboard transmission. I have a 2006 40 Sundancer w/CMD QSB-380s and ZF80IV gears. I received an alarm via the Smartcraft System View that indicated 205 degrees in the starboard transmission vs 150 degrees in the port transmission. I was running at about 2700 rpm and when I slowed to about 1500 rpm the temperature dropped and the alarm cleared, but it was still consistently 50 degrees higher than the port side.
There doesn’t appear to be anything fouled in the props and the engines were both showing similar, stable temperatures so I don’t think there is anything blocking the raw water intake. The gear pressures, while bouncing around a lot, seemed to be similar on both transmissions while cruising, although at lower rpm’s the starboard gear pressure was a bit lower. The fluid was a little less than a quart down, but no evidence whatsoever of any leak. After bringing the fluid level up, the starboard gear is still heating up 5-7 degrees higher than the port while idling at the dock (I haven’t had the opportunity to leave the dock since the original episode because of a combination of schedule and weather).
My dealer had a mechanic take a look, but they are going to refer it to the Cummins service tech, so I need to wait some more. In the meantime, any ideas would be greatly appreciated. Is there a way to tell whether the transmission cooler is blocked?
Thanks.
I’m new to the forum and recently experienced an overheating situation with my starboard transmission. I have a 2006 40 Sundancer w/CMD QSB-380s and ZF80IV gears. I received an alarm via the Smartcraft System View that indicated 205 degrees in the starboard transmission vs 150 degrees in the port transmission. I was running at about 2700 rpm and when I slowed to about 1500 rpm the temperature dropped and the alarm cleared, but it was still consistently 50 degrees higher than the port side.
There doesn’t appear to be anything fouled in the props and the engines were both showing similar, stable temperatures so I don’t think there is anything blocking the raw water intake. The gear pressures, while bouncing around a lot, seemed to be similar on both transmissions while cruising, although at lower rpm’s the starboard gear pressure was a bit lower. The fluid was a little less than a quart down, but no evidence whatsoever of any leak. After bringing the fluid level up, the starboard gear is still heating up 5-7 degrees higher than the port while idling at the dock (I haven’t had the opportunity to leave the dock since the original episode because of a combination of schedule and weather).
My dealer had a mechanic take a look, but they are going to refer it to the Cummins service tech, so I need to wait some more. In the meantime, any ideas would be greatly appreciated. Is there a way to tell whether the transmission cooler is blocked?
Thanks.
