Good morning!
I have a 2017 HD10 (no heat) and I went to flush the coolant yesterday evening and refill the system. When I refilled right near the max line on the reservoir, it burped out of the overflow for about 30 seconds before I shut it off (it was not an insignificant amount - maybe half a quart? The bleeding procedure really doesn't say much - but to fill the reservoir, run the machine (with the coolant cap on) until the fan kicks for a 2nd time, shut if off, then refill as needed. It started to bubble over 15 seconds or so after the fan kicked on for the first time.
Is this normal behavior? I'm going to try again here in a bit but figured I'd let you smart people help me sort it out in the event there's a larger issue at play. I'm inclined to believe there's air in the system somewhere but the manual seems to indicate that this seemingly rudimentary procedure will sort that out for me? I've attached the procedure from the maintenance manual in case I'm reading it wrong!
Steve
HD10 Coolant Replacement & Bleeding Procedures.pdf
