Originally Posted by New2Skool
I removed every heater from my bus.
The coolant lines lead from the engine into the cab through the firewall.
First to the primary heater and pump, looped through the door heater, then back around the driver to the front, mid ship and rear heater.
My lines have valves built in and I just closed them and cut the lines.
Pulled all of the heaters and didn't have hardly any leakage.
I stood the rear heater up on end, cut the lines and bungee corded the lines to the top of the windows keeping all of the coolant in.
I carried the heaters out and drained into a bucket.
I used a shop vac and sucked the coolant out of the lines.
Then removed the mid ship heater and so on until I got the main heater out.
There was 5-6 gallons of coolant removed along with the heaters.
I gave the heaters to a buddy that hooked them up on his semi truck trailer.
So, that was my experience.
what do you do for road heat and defrosters? put in new units?
I replaced the guts out of my driver console heaters but re-used the cabinet.. they were totally nasty and shot... seems no one ever cleans the coils in the bus heaters...
I first took a line off under the hood and drained a lot of the oolant into a bucket then used the booster pump to pump a lot of the lines dry before I took the units out. my rear heater i kept but disassembled so I did as suggested and picked it up on end before I yanked the lines...