Join Date: Sep 2008
Location: Los Angeles, CA, United States
Re: ELECTROHYDRAULIC CENTER STAND (EHCS)
I'm a few years late to this party. Just bought 2005 LT w/ 12k miles. EHCS started failing w/in a month. Thanks to JZeiler & others, I drained and flushed the oil, refilled, polished the shaft, & it worked fine for a minute. Started failing again--electric motor sounded slow, strained. It raised the bike almost, then released and lowered. I ordered the seal kit from NJ, which is now $50 +$16 shipping, for two O-rings and two seals! Before disassembling the hydraulic part, I removed electric motor, which is isolated from the hydraulic oil. (You can take the motor off w/o touching the hydraulic chambers/oil & seals.)
There was a remarkable amount of graphite mixed with grease inside, considering how little that motor runs. Perhaps because the chamber is sealed & dust can't escape. Anyway, I removed the rotor from the unit and cleaned the commutator, which was covered w/ graphite/grease mixture--likely a conductor and probably what interfered w/ motor operation. Brushes worn, but not worth replacing yet. Lots of fun getting brushes pushed back in against the spring to allow the commutator to slide back in. I greased the drive gear, too.
Result: Amazing improvement in electric motor speed, and EHCS works like a champ. I still have the seal kit in case it craps out in the future, but not having seen mention of the cleaning commutators in the many posts, I thought I'd give you my two cents. Thanks for all the amazing support, you guys!