Magnum stoker not pushing the coal
-
- New Member
- Posts: 2
- Joined: Fri. Oct. 19, 2018 8:45 pm
- Hot Air Coal Stoker Stove: Harman magnum stoker
Third season using this stove. Replaced the pusher block last year. Everything is moving, but the pusher isn’t pushing the coal. There seems to be a lot of play at the pusher rod. The pusher tube doesn’t stay tight to the weldment. Thoughts? Do I need to replace the weldment piece?
- McGiever
- Member
- Posts: 10130
- Joined: Sun. May. 02, 2010 11:26 pm
- Location: Junction of PA-OH-WV
- Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
- Hand Fed Coal Boiler: BUCKET A DAY water heater
- Hand Fed Coal Stove: Warm Morning 414A
- Coal Size/Type: PEA,NUT,STOVE /ANTHRACITE
- Other Heating: Ground Source Heat Pump and some Solar
Welcome Jimmy!
The weldment or "Fork" needs to be no wider than 1-3/4"...it will and does get spread wider as a safety instead of ruining the gear-motor due to a stuck or hard to move "pusher block". Wet coal fines will form a cement type of "crud" that locks up the pusher while that powerful motor keeps driving on...something has to give...and gear-motors are high dollar...
A big pair of Channelocks or water pump pliers can often times squeeze the gap back into specs.
A bit of reading for ya Jimmy:
Harman Stoker Stuck
The weldment or "Fork" needs to be no wider than 1-3/4"...it will and does get spread wider as a safety instead of ruining the gear-motor due to a stuck or hard to move "pusher block". Wet coal fines will form a cement type of "crud" that locks up the pusher while that powerful motor keeps driving on...something has to give...and gear-motors are high dollar...
A big pair of Channelocks or water pump pliers can often times squeeze the gap back into specs.
A bit of reading for ya Jimmy:
Harman Stoker Stuck
Last edited by McGiever on Sat. Oct. 20, 2018 9:32 am, edited 1 time in total.
-
- New Member
- Posts: 2
- Joined: Fri. Oct. 19, 2018 8:45 pm
- Hot Air Coal Stoker Stove: Harman magnum stoker
Thanks to you both. There was some slop between the tube and the fork assembly. The block wasn’t being pulled back the whole way. I shimmed it so that it is getting pulled back further and seems to be working now. Just need to dial in flow now.
- McGiever
- Member
- Posts: 10130
- Joined: Sun. May. 02, 2010 11:26 pm
- Location: Junction of PA-OH-WV
- Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
- Hand Fed Coal Boiler: BUCKET A DAY water heater
- Hand Fed Coal Stove: Warm Morning 414A
- Coal Size/Type: PEA,NUT,STOVE /ANTHRACITE
- Other Heating: Ground Source Heat Pump and some Solar
JimmyJ, Hope you noticed I edited the fork measurement, it was incorrect before.Jimmyjames wrote: ↑Sat. Oct. 20, 2018 9:54 amThanks to you both. There was some slop between the tube and the fork assembly. The block wasn’t being pulled back the whole way. I shimmed it so that it is getting pulled back further and seems to be working now. Just need to dial in flow now.