Question about Eppendorf 5415d 5415 D Microcentrifuge Centrifuge W/ Rotor 24 Lab Laboratory

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Error 8 rotor is tight but error still appears!

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Whirlpool cabrio washer showing F51 error code

Hi Craig,

Just saw this post come up among F51 error codes (as it will show previously posted and answered questions ) and wanted to add some info I have regarding this exact issue you may or may not already have, no harm in posting either way.

The F51 typically indicates a failed "RPS" has been detecected...but it can be the result of other issues...just for future reference and if anyone has not come accross this before.

The scenario you describe is usually associated with a item stuck under the tub or a loose stator or a faulty "RPS" device or connection at the "RPS"...but I don't know if you checked that yet or if you know how, thus the error F51.

**The repair tip below is directly from Whirlpool**

F51 is usually associated with the rotor and stator/RPS assembly and quiet often it is initiated due to a loose rotor or bad RPS...I'd start by checking the bolt.

There is a repair tip regarding this which suggest checking the wires to the RPS and then the rotor, while insuring the center bolt is really tight via applying some "lock tight".

I actually see a lot of these and most times it's a loose rotor bolt, that is where I always start my diagnosis. Here's an exert from my files directly from Whirlpool...


You may want to check the rotor, I've seen the center bolt become extremely loose, thus causing the F51 error, this is where and what to look for shown below...

...but either way that should help out with the repairs and good luck.


Macmarkus :)

Dec 21, 2011 | Whirlpool Washing Machines

1 Answer

Chevrolet blazer starting problems

Check for spark. Likely causes are fuel pump, fuel filter, bad cap rotor, fouled plugs. I would start with new fuel filter and cap rotor. Totaly cost about 25 bucks. The fuel filter is on the driver's side frame rail. About middle of vehicle. Usalluy rusted and I think the wrenches are 7/8 and 13/16. This take patience cause it is in a tight area and you only get to turn the filter 1/8 turn the turn the wrench and turn again. Repeat

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What would make the car pulsate when breaking while the brakes and rotors appear good.

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brake fluid causing brake calipers to hang-up. inproperly installed brakes, not torqueing down

the bolts, loose bolts. good luck!

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Code error 131.

Hi just read your posting.Error Code 131 is called REPETITIVE ROTOR POSITION SENSOR ERROR..The 3 reasons this fault is appearing is 1--the wiring to the rotor sensor is faulty.--2--the rotor sensor is faulty.--3-- the motor controller is faulty.If you have or can borrow an electrical test meter I can help you test the wiring but to test the rotor sensor you need a tester called RPS tester.Please reply on how you would like to proceed an I will help you as much as I can.

Aug 08, 2010 | Fisher and Paykel Fisher Paykel Intuitive...

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Code 131 appears on the screen. How do I fix it?

The code 131 indicates Rotor Position Sensor Error. The Motor Controller has found an error in the pattern received from the Rotor Position Sensor. This code appears due to bad connection on the harness between the Rotor Position Sensor and the Motor Controller Module, or a faulty Rotor Position Sensor.
1) Check for corrosion on the edge connector of the Rotor Position Sensor and the Motor Controller Module connector.

2) Check the contacts on the Rotor Positional Sensor end of the Hall Harness to see if any have been damaged. (Each set of contacts in the socket has two wipers. If the distance between these wipers varies between different contacts, replace the Rotor Positional Sensor Harness).

3)Check the Rotor Position Sensor with an R.P.S. tester. Replace if it is found to be faulty.

Thank you !!

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Spindle nut torque spec on a 2004 F-150

u DON'T torque this!! tighten the nut while spinng the rotor, then back off untiol it is free, then tighten it down until it seats tight, then turn another 1/8" tighter, that is it, any tighter u burn up the the wheel bearings

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Rear brakes on 2005 F150

You can't remove the rotors because the emergency brake is tight on the inside of the rotors. Make sure it's not engaged when you are working on the rear brakes. Block the front tires for saftey. Then you have to remove the rear calipers from the mounting brackets, there are two bolts that hold the calipers on. Make sure you hang the calipers securily with some wire so you don't damage the rubber brake line hose. Then you need to adjust the emergency parking brake shoes in order to remove the rotors. Theres a rubber plug on the backside of the rear hubs, once you look at the back of the hub you'll see the plug. It's on the top. Once you take out the plug, you need to use a screw driver to turn the star spindel. You need to turn the star spindel counter-clockwise in order to give yourself enough clearance to remove the rotors. The beauty of this design is that ford incorporated a drum and caliper system together, but it's difficult to take off the rotors if the emergency brake shoes are to tight. The inside of the rotors acts as the drums for the emergency brake system. I've done this and it's not that hard, but, I did have to replace the emergency brake shoes because they were worn out and the shoes fell off the metal backing plates when I finally got the rotors to come off. They only glued these shoes onto the backing plates, they don't rivet them so take your time getting the rotors off or you can damage the emergency brake shoes, but if you do they are cheap at napa. My service guide says to install the new rotors, use a couple of lug nuts to hold it on, then adjust the star spindal for the emergency brake all the way clockwise until you can't turn it anymore, then you must back it off 8 clicks counter-clockwise. Make sure the emergency brake is not engaged when you are doing this, the 8 clicks backwards compensates for when you do engage the parking brake because the shoes expands outwards. This adjustment sets the emergency brakes so they work properly. Once the emergency brake is properly set you can't remove the rear rotors, which is what your initial problem is. Then install the rubber plug back in the hole, put on the new pads and calipers and you're good to go.

Jun 25, 2008 | 2005 Ford F-150

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