Coach 435 - Printable Version
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+--- Thread: Coach 435 (/showthread.php?tid=8197)
Coach 435 - cwl1979 - 10-07-2024
Jack grab some coffee,
I've seen multiple posts with this same issue so I solved it.
There have been many posts about the Teddy heater under the salon couch quitting. when i rebuilt the entire aqua hot system i found some of the blowers didn't work. The teddy heater was one. I started by removing the couch to gain access to the heater box. turns out it was held down with 6 3/8ths lag screws. Once the couch was unbolted from the floor i flipped it up out of the way and revealed the problematic heater.
As you can see in the picture i used a test light to make sure i had power. Test light from MAC tools will test power and ground and if your arms are long enough test the whole circuit for continuity. Power was reaching the unit. I unplugged all the wires making sure i didn't arc them, not like finding decent grounds is easy in these coaches. From there i dismantled the entire assembly to get the electric motor out. My hope was that i could just source a new motor and slap it back together. Curiosity got the best of me. I removed the double squirrel cage by grabbing some pliers and undid the constant tension rings. I pulled the two squirrel cages off, grabbed a wrench and removed the two bolts that held the motor together. At which point I noticed the brushes were bad.
I have brushes, I can fix this! I went back to the coach I grabbed the spare March brushes and compared sizes.
They would need some filing but they would work. I filed the new brushes down,
test fit,
Once the motor was reassembled a quick floor test with the battery showed the motor worked just fine. I replaced the squirrel cages and the constant tension rings, reassembled the motor into the housing with the heater core, put all the screws back in, and plugged in the wires.
Moral of the story, you might not need a $300 heater you might need some cheap brushes and about two hours of time. For those wanting to have spares. a set like this on Amazon would fix just about everything including those Aqua hot pump motors.
https://www.amazon.com/RICHERI-Electric-Brushes-Different-Replacement/dp/B0CP3GBQFW/ref=sr_1_3?sr=8-3
And for once, my wife is happy I bought quality tools.
Don't mind my amazing green carpet, it's nasty and ugly and I'm going to replace the flooring before long. I've got 4 very large dogs, and carpet just wont work.
My wife would like to add... (No I'm not - I'm typing this for him because I type way faster than he does.
RE: Coach 435 - hbens - 10-07-2024
Thanks Carl. My heater isn't blowing any air since I bought the coach 4 years ago. Living in FL the coach is warm enough with all of the other heaters working but it has bugged me that this one doesn't work. I'll be getting around to fixing it sooner rather than later now that you've laid out the 'how' for us.
RE: Coach 435 - Jack Houpe - 10-07-2024
Like you I buy brushes with a least one side correct diameter then file the other side till it fits, saved lots of money and time waiting on parts. Good job brother!
I guess your running out of time up there in Alaska are you getting below freezing yet? What's the next project?
RE: Coach 435 - cwl1979 - 10-07-2024
Hank glad I could help. Honestly laying on the floor to unblock the couch and putting the motor back together were the hardest part. When putting it back together start reassemble from the side with the brushes. Should be much smoother that way.
Jack. It's been down to 31 degrees last week but only for a couple hours. As for the next project I've got to dig into the water damage area above the entry door some more and make a repair panel for that. I'll end up doing that before I put the couch back since I'm going to have to remove the half round columns on either side of the door. This way I can make a patch that won't rip the wallpaper the first time the coach flexes. After that i just might try my hand at upholstery.
RE: Coach 435 - Jack Houpe - 10-07-2024
Carl if you have an awning check the screws and the rubber type seal that keeps the water off all of them. If one or more of those screws came out water could come in from that area.
RE: Coach 435 - cwl1979 - 10-07-2024
I haven't seen any water intrusion in the area of the awnings. yet. It has rained here for the last 3 weeks with a couple days of overcast and all seems dry. I have noticed that I've got a few missing rivets under the salon window on the passenger side though. Unfortunately due to the angle I'm parked at in my driveway i cant jack it up and fix them. For now im keeping an ey on them to make sure nothing gets in there.
RE: Coach 435 - Jack Houpe - 10-07-2024
I think I remember one of the most important things to have on hand is duck tape.
RE: Coach 435 - cwl1979 - 10-07-2024
In 3 inch rolls. perfect for everything. and make great cup holders