Bill, check to make sure you are gettint power to the motor. VOLT Meter across each part in the circuit including ground.
Motor looks similar to 80's gm Electric wi dow motors. Look for a match at auto parts store.
ALso looks similar to those used on trailer toung jacks.
Good luck and keep us posted.k[j
On Friday, August 11, 2023 at 12:10:17 PM EDT, Bill in OKC too via groups.io <wmrmeyers=yahoo.com@groups.io> wrote:
SWMBO' s power wheelchair lift crapped out the other day. New motor is no longer available since the lift is ancient. Manufacturer of the lift removed any OEM markings. It's a right- angle gear motor, which I'll eventually have some photos and dimensions for. This is the in-and-out motor for a Harmar AL-600 lift that fits in the back of a van. Near as I can remember it was made about 2007 or so.
There is no continuity in the motor, but othinf seems burned. I pulled it apart and fiddled with it, and got continuity back. Hooked it back up to power trying to get a current draw reading and it spun up and rapped out again. No continuity again. Brushes look good.
I have a megger for testing insulation, and an assortment of DVMs and at least one analog voltmeter. Somewhere in the library are a couple of older books on motor testing and repair, but haven't found them yet. Any suggestions for resources? I looked at Grainger & McMaster-Carr, also Amazon & Surplus Center. They have similar gear motors but nothing that looks exactly right. Most are either way too light or way too heavy. This is a 12vdc motor, could draw as much as 20amps, but probably closer to 10, and could less. There is another motor on it with a different gearbox. Looks to be about the same motor. May fiddle with that, and get a current draw.
Found one of these motors for sale on the knoppix site for $600, was $400 from Harmar at one time. Seems a bit fishy to me, and can't afford it anyway.
Gotta get ready to take SWMBO to get fitted for a new CPAP mask, and for both of us to get new CPAP machines. Hope someone can point me in a useful direction. Used to be a bunch of folks whe rebuilt motors & alternators/generators around here. Called one and they don't do DC motors at all, and don't think there's anyone left who does.,
Any help will be appreciated!
Bill in OKC
There is no continuity in the motor, but othinf seems burned. I pulled it apart and fiddled with it, and got continuity back. Hooked it back up to power trying to get a current draw reading and it spun up and rapped out again. No continuity again. Brushes look good.
I have a megger for testing insulation, and an assortment of DVMs and at least one analog voltmeter. Somewhere in the library are a couple of older books on motor testing and repair, but haven't found them yet. Any suggestions for resources? I looked at Grainger & McMaster-Carr, also Amazon & Surplus Center. They have similar gear motors but nothing that looks exactly right. Most are either way too light or way too heavy. This is a 12vdc motor, could draw as much as 20amps, but probably closer to 10, and could less. There is another motor on it with a different gearbox. Looks to be about the same motor. May fiddle with that, and get a current draw.
Found one of these motors for sale on the knoppix site for $600, was $400 from Harmar at one time. Seems a bit fishy to me, and can't afford it anyway.
Gotta get ready to take SWMBO to get fitted for a new CPAP mask, and for both of us to get new CPAP machines. Hope someone can point me in a useful direction. Used to be a bunch of folks whe rebuilt motors & alternators/generators around here. Called one and they don't do DC motors at all, and don't think there's anyone left who does.,
Any help will be appreciated!
Bill in OKC
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