Removing wires from drill trigger

[JohnH]

I'm playing around with an old Back & Decker drill and wont to remove the wires from the trigger mechanism. There aren't any little screws. Do I just pull them out or is there some other technique. I have tried easing/pulling them out, but they are not moving.

Anyone got any ideas.

 

[brightspark]

poke a small thin nail in from the spring conection in and it will release the cable if you pull on it with pin inserted

 

[wristpin]

No nail? Small twist drill works well.

 

[The_Yellow_Ardvark]

Fine Jewellers screwdriver will be better.
Or if you are a snob the correct B&D tool.
But I use a screwdriver, even through I have the tool.
But can never find it.

 

[Ali]

That brings back memories of me as an 11 year old ‘trying out’ Dads drill when he was out. Fitted the biggest bit I could find and attacked a piece of steel bar clamped in the workmate. Must have accidentally pressed the trigger lock and it dug in, I lost grip and it span round and round wrapping up 10m of extension cord before finally exploding in a shower of sparks.

Still works though.

 

[Robert Weaver]

Spin the wire on the hole, while gentle pulling it out.

 

[JohnH]

Thanks guys, much appreciated.
I detached the wires poking with a very small screwdriver. Worked a treat.

Now, the next question. I was watching a bloke on youtube, "restoring" the same drill, a B&D D720. His one had exactly the same trigger switch, except his one also had a large capacitor wired in as well. I think they were attached into the grey wires holes. It was very difficult to tell as the plank kept getting his hands in the way. So the question is, what is the purpose of the capacitor? Does it smooth out the trigger action?

 

[The_Yellow_Ardvark]

Thanks guys, much appreciated.
I detached the wires poking with a very small screwdriver. Worked a treat.

Now, the next question. I was watching a bloke on youtube, "restoring" the same drill, a B&D D720. His one had exactly the same trigger switch, except his one also had a large capacitor wired in as well. I think they were attached into the grey wires holes. It was very difficult to tell as the plank kept getting his hands in the way. So the question is, what is the purpose of the capacitor? Does it smooth out the trigger action?

Surprising capacitor.
Is your got the Double square to indicate it is double insulated?

 

[Blobber]

I should think the capacitor was just for suppression to stop it interfering with TVs and radios, probably added on later models

 

[JohnH]

Surprising capacitor.
Is your got the Double square to indicate it is double insulated?

View attachment 317908

Yes



Heres the dude doing the restoration

 

[The_Yellow_Ardvark]

Yes



Heres the dude doing the restoration

Yes, then it is part of the interference suppression system and part of the double insulation set up.

B&D used to do replacements, they have an office is Slough.
Worth giving them a call.

 

[The_Yellow_Ardvark]

I should think the capacitor was just for suppression to stop it interfering with TVs and radios, probably added on later models

Was fitted from build when B&D went double insulation.

 

[JohnH]

Thanks chaps that all makes a good deal of sense.

Here's the final question. See below, the slightly later drill, an H68V, also double insulated.



As you can see, its also got a large capacitor, which has two black wires which seem to be the same as the D720, but its also got an extra white wire. Yes I know, I could take it apart, but I dont quite trust myself to get it back together properly, so the question is where would this go to?

 

[The_Yellow_Ardvark]

Thanks chaps that all makes a good deal of sense.

Here's the final question. See below, the slightly later drill, an H68V, also double insulated.



As you can see, its also got a large capacitor, which has two black wires which seem to be the same as the D720, but its also got an extra white wire. Yes I know, I could take it apart, but I dont quite trust myself to get it back together properly, so the question is where would this go to?

Don't fix it.
The white wire is part of the earthling system.

 

[JohnH]

I'm not sure what you mean. There is no earth from the main plug, only Live and Neutral.
Are you saying, it only attaches to the motor casing?

The reason I asked was that the beigey drill at the top has a sticky variable speed trigger and the variable speed one out of the H68V will fit in the beigey handle okay, and I thought it maybe easier to find the latter trigger, and fit that. I just wanted to make sure I would get the wiring sorted okay.

 

[The_Yellow_Ardvark]

I'm not sure what you mean. There is no earth from the main plug, only Live and Neutral.
Are you saying, it only attaches to the motor casing?

The reason I asked was that the beigey drill at the top has a sticky variable speed trigger and the variable speed one out of the H68V will fit in the beigey handle okay, and I thought it maybe easier to find the latter trigger, and fit that. I just wanted to make sure I would get the wiring sorted okay.

The white wire will but a short on and blow ther plug fuse when the motor case goes live, in a fault.