Troubleshooting
IMER Pump Rotor and Stator Wear: Signs, Checks, Parts
Falling material flow or a BLOC message on an IMER Step-Up 120, Small 50 or Koine 4? What the manuals say to check, how to swap the pump, and the parts listed.
4 min read
01Where it fits
Where this part sits on your machine
02Fits
Fits these machines
2 machines · 2 IMER parts books
From IMER parts books 3225890 r11 (2018-09), 3209290 r11 (2019-02).
03Specifications
Part details
This 5x5x20 shaft key is a genuine IMER OEM part, part number 3203117. The IMER parts book lists it as Key 5x5x20 in two places: the Workman II 250 Concrete Mixer assembly (1105849-1105850) on the IMER Workman 250, and the Bag Crusher assembly (1107511) on the IMER Small 50.
04Documents
Parts books
Guides
Guides for this part
Maintenance
IMER Mixer and Pump Cleaning, Storage and Winter Care
End-of-shift cleaning, freeze draining and storage steps from the IMER manuals for the Mix 750, Mix 120 Plus, Step-Up 120, Small 50, Koine 4 and more.
5 min read
Answers
Questions about the machines it fits
05Shipping & returns
Shipped from the USA
06Questions
Good to know
Fit check
Not sure it fits?
Send us the model and serial number from the machine’s serial plate, or a photo of it. A parts specialist checks the fit against the IMER parts books before the part ships.