My wife closed one of our garage doors on our child's toy.

If I unhook the garage door from the chain and close it half way the
garage door stays in that position so the springs are good. If I re-
hook the garage door while in this position and try to close/open the
door with the motor it does so just fine until it either closes or
opens all the way; at this point the motor starts grinding and
rattling loudly and won't stop until I push door button.

If I start with the garage door hooked in the fully open position the
motor will start the noise and the garage door won't move.

If I start the garage door hooked in the fully closed position the
garage door will open just fine until it hits the fully open position
in which the motor starts making the noise.

I unhooked the the garage door and left it fully closed and then
tested the movement of the chain without the garage door attached and
it moved fully from end to end without any problems.

I hope I exhausted all possibilities and gave enough information to
garner some insight.

It sounds like the limit switches need to be readjusted. At the moment the
door reaches bottom or top, a limit switch should stop the motor



"GG.and.UN." wrote in message
oups.com...
My wife closed one of our garage doors on our child's toy.

If I unhook the garage door from the chain and close it half way the
garage door stays in that position so the springs are good. If I re-
hook the garage door while in this position and try to close/open the
door with the motor it does so just fine until it either closes or
opens all the way; at this point the motor starts grinding and
rattling loudly and won't stop until I push door button.

If I start with the garage door hooked in the fully open position the
motor will start the noise and the garage door won't move.

If I start the garage door hooked in the fully closed position the
garage door will open just fine until it hits the fully open position
in which the motor starts making the noise.

I unhooked the the garage door and left it fully closed and then
tested the movement of the chain without the garage door attached and
it moved fully from end to end without any problems.

I hope I exhausted all possibilities and gave enough information to
garner some insight.

RBM wrote:
It sounds like the limit switches need to be readjusted. At the
moment the door reaches bottom or top, a limit switch should stop the
motor

Or replaced. In any case that seems to be the problem. Take a good
look at the wires to make sure they are intact.

--
Joseph Meehan

Dia 's Muire duit

On Mar 2, 7:36 pm, "GG.and.UN." wrote:
My wife closed one of our garage doors on our child's toy.

If I unhook the garage door from the chain and close it half way the
garage door stays in that position so the springs are good. If I re-
hook the garage door while in this position and try to close/open the
door with the motor it does so just fine until it either closes or
opens all the way; at this point the motor starts grinding and
rattling loudly and won't stop until I push door button.

If I start with the garage door hooked in the fully open position the
motor will start the noise and the garage door won't move.

If I start the garage door hooked in the fully closed position the
garage door will open just fine until it hits the fully open position
in which the motor starts making the noise.

I unhooked the the garage door and left it fully closed and then
tested the movement of the chain without the garage door attached and
it moved fully from end to end without any problems.

I hope I exhausted all possibilities and gave enough information to
garner some insight.

buffalo ny: mine lasted thru the 2 kids growing up. then it was doing
that so i screwed around and adjusted and complained about it and
ordered a part and installed it and complained more about it. i even
had a real garage door opener guy for a tenant, and he have it his
best. between the 2 of us we wasted more time on the old unit, should
have just bought the replacement unit for him to install at first.
has modern safety sensors, outdoor keypad, quiet quiet quiet compaired
to old chain drive.
i predict that the child's father's toy will be his new quiet rubber
belt driven garage door opener professionally installed by [home depot/
lowe's] with extra matching remotes purchased at the same time.
and his mom will immediately agree to this safety item for your home.

On Mar 2, 8:15 pm, "Joseph Meehan" wrote:
RBM wrote:
It sounds like the limit switches need to be readjusted. At the
moment the door reaches bottom or top, a limit switch should stop the
motor

Or replaced. In any case that seems to be the problem. Take a good
look at the wires to make sure they are intact.

--
Joseph Meehan

Dia 's Muire duit


I don't think there are limit switches in any current vintage garage
door openers. They measure movement by counting pulses from the gear
drive.

On Mar 2, 8:49 pm, wrote:
On Mar 2, 8:15 pm, "Joseph Meehan" wrote:

RBM wrote:
It sounds like the limit switches need to be readjusted. At the
moment the door reaches bottom or top, a limit switch should stop the
motor

Or replaced. In any case that seems to be the problem. Take a good
look at the wires to make sure they are intact.

--
Joseph Meehan

Dia 's Muire duit

I don't think there are limit switches in any current vintage garage
door openers. They measure movement by counting pulses from the gear
drive.

Also meant to say, it doesn't sound like an adjustment issue either.
If the limits are out of whack, the unit should still stop after going
a bit farther than it should. You would also think the force sensing
system would stop the door He says the motor won't stop in either
direction unless he hits the switch. I guess he can try backing the
limit adjustment to min in each direction an see what happens.

Hey everyone, I fixed it.

I took apart the motor housing and noticed that the spur gear was not
lined up properly with the worm gear (the spur gear was at about a -45
degree tilt from the horizontal plane. I put everything back in place
and everything works great.

Thanks for all the replies!

wrote:
On Mar 2, 8:15 pm, "Joseph Meehan" wrote:
RBM wrote:
It sounds like the limit switches need to be readjusted. At the
moment the door reaches bottom or top, a limit switch should stop
the motor

Or replaced. In any case that seems to be the problem. Take a
good look at the wires to make sure they are intact.

--
Joseph Meehan

Dia 's Muire duit


I don't think there are limit switches in any current vintage garage
door openers. They measure movement by counting pulses from the gear
drive.

I just checked the Genie site and they still show limit switches on
their description of how they work.

--
Joseph Meehan

Dia 's Muire duit

On Mar 3, 8:27 am, "Joseph Meehan" wrote:
wrote:
On Mar 2, 8:15 pm, "Joseph Meehan" wrote:
RBM wrote:
It sounds like the limit switches need to be readjusted. At the
moment the door reaches bottom or top, a limit switch should stop
the motor

Or replaced. In any case that seems to be the problem. Take a
good look at the wires to make sure they are intact.

--
Joseph Meehan

Dia 's Muire duit

I don't think there are limit switches in any current vintage garage
door openers. They measure movement by counting pulses from the gear
drive.

I just checked the Genie site and they still show limit switches on
their description of how they work.

Interesting. I wonder why they still use them. I've had several
Craftsman over the years as well as a 20 year old LiftMaster. Neither
brand used actual switches on the tracks to set the limits. I think
they track movement by counting pulses from the gear train, which
sounds like a simple design, less wires to run, switches to go bad,
etc.





--
Joseph Meehan

Dia 's Muire duit- Hide quoted text -

- Show quoted text -

wrote:
On Mar 3, 8:27 am, "Joseph Meehan" wrote:
wrote:
On Mar 2, 8:15 pm, "Joseph Meehan"
wrote:
RBM wrote:
It sounds like the limit switches need to be readjusted. At the
moment the door reaches bottom or top, a limit switch should stop
the motor

Or replaced. In any case that seems to be the problem. Take a
good look at the wires to make sure they are intact.

--
Joseph Meehan

Dia 's Muire duit

I don't think there are limit switches in any current vintage garage
door openers. They measure movement by counting pulses from the
gear drive.

I just checked the Genie site and they still show limit switches
on their description of how they work.

Interesting. I wonder why they still use them.

I would guess because they work?? It would be interesting to know
what the various failure rates are but the switches are relatively simple
devices and do seem to work well and reliably. Pulse counting could
certainly work, but I see some potential problems with it.

I've had several
Craftsman over the years as well as a 20 year old LiftMaster. Neither
brand used actual switches on the tracks to set the limits. I think
they track movement by counting pulses from the gear train, which
sounds like a simple design, less wires to run, switches to go bad,
etc.





--
Joseph Meehan

Dia 's Muire duit- Hide quoted text -

- Show quoted text -

--
Joseph Meehan

Dia 's Muire duit

wrote in message
ups.com...
On Mar 2, 8:15 pm, "Joseph Meehan" wrote:
RBM wrote:
It sounds like the limit switches need to be readjusted. At the
moment the door reaches bottom or top, a limit switch should stop the
motor

Or replaced. In any case that seems to be the problem. Take a good
look at the wires to make sure they are intact.

--
Joseph Meehan

Dia 's Muire duit


I don't think there are limit switches in any current vintage garage
door openers. They measure movement by counting pulses from the gear
drive.



There sure are down and up limit switches on my 2005 Genie screw drive.

The Liftmaster/Chamberlain/Craftsman still use limit switches & always
have. The limit switches are under the motor cover & not on the track.

There are/were some units that counted motor revolutions but they were
a real pain & had to be reset (re-learned) every time the power went
out.

Doordoc
www.ActionDoor.com

On Mar 3, 8:45 am, wrote:
On Mar 3, 8:27 am, "Joseph Meehan" wrote:





wrote:
On Mar 2, 8:15 pm, "Joseph Meehan" wrote:
RBM wrote:
It sounds like the limit switches need to be readjusted. At the
moment thedoorreaches bottom or top, a limit switch should stop
the motor

Or replaced. In any case that seems to be the problem. Take a
good look at the wires to make sure they are intact.

--
Joseph Meehan

Dia 's Muire duit

I don't think there are limit switches in any current vintagegarage
dooropeners. They measure movement by counting pulses from the gear
drive.

I just checked the Genie site and they still show limit switches on
their description of how they work.

Interesting. I wonder why they still use them. I've had several
Craftsman over the years as well as a 20 year old LiftMaster. Neither
brand used actual switches on the tracks to set the limits. I think
they track movement by counting pulses from the gear train, which
sounds like a simple design, less wires to run, switches to go bad,
etc.





--
Joseph Meehan

Dia 's Muire duit- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -