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> Relays... stupid question
Hammy
post Nov 10 2005, 06:44 PM
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Quick, stupid question. How do the relays on the relay board come out? The little plastic covers pop off but I can't seem to figure out how to get the rest out. I'm asking so i don't screw something up. (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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Mueller
post Nov 10 2005, 06:46 PM
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the relay should come off the board before the cover comes off...sounds like bad corrosion.....
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r_towle
post Nov 10 2005, 06:47 PM
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grab, wiggle, pull
platic cover stays on the relay
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Allan
post Nov 10 2005, 06:49 PM
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When I first got my car I had the same problem. I found out the adhesive that holds the cap on gets brittle and breaks after 30+ years. I just took a utility knife and pried it out of the socket then re-glued the cap back on.

Hope that helps...
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bd1308
post Nov 10 2005, 06:49 PM
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some of the seals on those relays suck, so you end up pulling off the over before getting the relay off...

the old ones used a sealer glue to hold the 2 pieces together.

the new ones are much better.

but i typically use a knife to get some leverage and gently work the relay out of the socket.

b
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Hammy
post Nov 10 2005, 06:49 PM
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(IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif) peachy.

So how shall I get them off now ?

edit... I'll try and use a knife. I won't get shocked will I (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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Mueller
post Nov 10 2005, 06:51 PM
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QUOTE (Hammy @ Nov 10 2005, 05:49 PM)
(IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif) peachy.

So how shall I get them off now ?

edit... I'll try and use a knife. I won't get shocked will I (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

with power off or being carefull, use a small blade screwdriver and pry them off.......
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bd1308
post Nov 10 2005, 06:51 PM
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it's all in the plan (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif)


nope...as long as your ignition is off.


b
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Allan
post Nov 10 2005, 06:52 PM
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QUOTE (Hammy @ Nov 10 2005, 04:49 PM)
I won't get shocked will I (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

If in doubt, disconnect the battery. (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif)
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Flat VW
post Nov 10 2005, 06:53 PM
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I grab em' with neddlenose pliars on the large pins (same diameter as the leg of the relay that extend up thru the base of the relay.

John
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Hammy
post Nov 10 2005, 07:23 PM
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Sweet
Turns out it was a bad relay making my heater blower not work (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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SirAndy
post Nov 10 2005, 07:42 PM
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QUOTE (Hammy @ Nov 10 2005, 05:49 PM)
I'll try and use a knife. I won't get shocked will I (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

how about disconnecting the battery ???

(IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif) Andy
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Marlow
post Nov 10 2005, 07:43 PM
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These little relays are pretty hardy. This one came out of my car's relay board, and it still worked!!


Attached image(s)
Attached Image
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Hammy
post Nov 10 2005, 07:46 PM
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Wow. (IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif)
What do relays do ? how do they work? After looking at my busted one I see the little spring and a plate it connects to and then coil wire underneath that.. (IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif)
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bd1308
post Nov 10 2005, 07:49 PM
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guys!!! i got this one:

okay, a relay is a switch. see, a switch can only handle loads up to a certain amount (25 amps or so)....

a relay is used to switch on a huge circuit....its like a switch for a switch...


switch--->relay---->starter/lights/heater blower.

the switch engages the relay which engages the desired object


(IMG:http://www.914world.com/bbs2/html/emoticons/clap.gif) b
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Marlow
post Nov 10 2005, 07:59 PM
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Relays allow a low power switch to control a large current device.

They have a low current side and a high current side. Power is applied to the low current side which energizes a magnetic field and draws the high current side open or closed (depending if the relay is Normally Open or Normally Closed).

In our little 914 relays (see photo above) power is applied to the copper coil, a magnetic field is created, pulls the top plate down and causes the high current side to make it's connection. Once the power is removed the magnetic field collapses and the spring pulls on the plate and breaks the connection on the high current side.

Their operation is pretty simple.
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Hammy
post Nov 10 2005, 08:06 PM
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(IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif)
Thanks for explanation guys

I'm thinking about going and buying a book on basic electronics and such... Figure I'll solve a lot of 914 problems too (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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motorhead
post Nov 10 2005, 08:20 PM
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While you're at it, go to your local wrecking yard/s, see if you can find a wrecked teener. Shouldn't be hard. I grabbed about 3 or 4 as spares about 15 years ago. Headlights each have one, and a few in the relay board. As I recall, tariff was about 3 bucks for the batch. If you have one in the glovebox, you'll never need it. (IMG:http://www.914world.com/bbs2/html/emoticons/cool.gif)
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Allan
post Nov 10 2005, 08:33 PM
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QUOTE (motorhead @ Nov 10 2005, 06:20 PM)
If you have one in the glovebox, you'll never need it. (IMG:http://www.914world.com/bbs2/html/emoticons/cool.gif)

(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif)
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blitZ
post Nov 11 2005, 06:06 AM
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I had a similar problem when the heat lever is engaged, a fuse on the relay board blew, which is shared by the fuel pump. Are these relays interchangeable or unique to each socket?
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