Crown Reach No Lift, No Drive (Code 222)

Crown Reach Truck that has an intermittent No lift and No drive. Codes out 222 which is an open in the lift motor circuit. The drive is also affected since the power steering is also dependent on the same pump as the lift.

[@rogerthomas1982]

I picked up a new customer by diagnosing this exact same problem. The first company diagnosed a bad computer as well and gave an estimate. The brushes looked good as well until I pulled the leads to check that they were traveling freely in the holder. They were all very tight in the holders. Ordered new brushes (I think from Crown) and they were tight too. The holders looked good so I ended up filing down the new brushes until they slid freely. Dressed the commutator and the truck has been running fine for the last 8 years. I never did figure out how brushes that must have been free when the motor was built became so swelled as to be tight years later.
Good video.

[@arniesand]

I've seen that too but the brushes on the ones I've seen were arcing and the commutator was a little burnt. Installed new brushes, cleaned the commutator and it's good as new. This one threw me for a loop because the motor was running fine, until it wasn't.

[@bryanleverett2830]

This isn’t from the carbon brushes swelling. It’s from the metal parts of the brush holder warping from heat. Bad/weak batteries, over loading, bad cables, and lots of things can cause it. Not gonna say I never rubbed a little off the side of a brush so it slid better in a brush holder. Used to do it all the time on super high hour crown PC3000 pallet jacks

[@Sell-yp6sy]

Thank you 🙏👍

[@chuckvoss9344]

Interesting problem. thanks for sharing.

[@arniesand]

Wow, I would've went down the same rabbit hole and put a module on it too! I'm curious, if the cables were removed the minute the motor shut off, would the resistance be at least a few ohms higher than normal? Finally, as usual, another awesome and informative video!

[@forkliftgeek10]

Maybe

[@tootoosick18]

Had that befor. Stuck brushes In motor.

[@hondahacks1014]

That pump needs to be changed too.

[@thomzwiefler6305]

Was this a 36V RR?

[@forkliftgeek10]

I believe this was a 24v

[@thomzwiefler6305]

Let me guess, crown was the previous company hahah

[@verajavi12]

Intermittents are very difficult even with a scope