How do I take this out?

[dpmstevens]

Hi all,
I need to replace the fuse box in our W169 A180CDi, as it's corroded after the cabin got wet. But I can't figure out how to remove the wiring from the car to the fuse box. Each cable is locked into place but there's no obvious way to remove them.

Anyone know if there's a special tool or a trick to this? I guess it must be possible to do...

Cheers
Dan

 

[Wighty]

Hi all,
I need to replace the fuse box in our W169 A180CDi, as it's corroded after the cabin got wet. But I can't figure out how to remove the wiring from the car to the fuse box. Each cable is locked into place but there's no obvious way to remove them.

Anyone know if there's a special tool or a trick to this? I guess it must be possible to do...

Cheers
Dan

Let’s have a picture buddy

 

[dpmstevens]

Here you go. Pic of the underside of the fuse block, with the wire entering. One of the top of the fuse block, where the fuse plugs in. And one of the connector on the wire, which I removed from a spare fuse block by cutting it open.

The connector has a silver V-shaped tab that locks it into the block. I need to know how to release this.
Cheers
Dan

 

[Snake Charmer]

That last photo showing a two part crimp terminal, the stainless steel part appears to have a dual purpose as spring and retainer.

Firstly, retainer barbs to keep the crimp within its housing at correct height and alignment.

Secondly, the brass crimp fuse contacts become sprung to contact the fuse when inserted or removed acting as a wiper with additional contact in the bottom of the crimp vee.

There will be a correct tool for removal, is there an additional barb on the opposite side of the stainless part?

 

[dpmstevens]

That last photo showing a two part crimp terminal, the stainless steel part appears to have a dual purpose as spring and retainer.

Firstly, retainer barbs to keep the crimp within its housing at correct height and alignment.

Secondly, the brass crimp fuse contacts become sprung to contact the fuse when inserted or removed acting as a wiper with additional contact in the bottom of the crimp vee.

There will be a correct tool for removal, is there an additional barb on the opposite side of the stainless part?

That's a great explanation - thanks. Don't think there's another barb on the stainless part. I might remove another one to check as this could have been damaged in the removal process.

If there is a tool, I need to find it or make something similar. I've pushed pieces of wire and cut down tweezers through the top of the fuse block, but they don't work.

EDIT: there's a barb missing from the stainless part. Must have broken off during removal. It should look like this:

 

[Blobcat]

Those connectors are kind of single fit - they’re not really made to be removed.

I’ve used very thin screwdrivers to take multiple plugs apart previously. With care you can get the barb released - sometimes it’s better to press the connector further in initially so the tension is off the end of the barb, then slide the screwdriver in bend the Barb so you can slide it out.

 

[peterws1957]

Those connectors are kind of single fit - they’re not really made to be removed.

I’ve used very thin screwdrivers to take multiple plugs apart previously. With care you can get the barb released - sometimes it’s better to press the connector further in initially so the tension is off the end of the barb, then slide the screwdriver in bend the Barb so you can slide it out.

This exactly, a small thin screwdriver does the job every time.

 

[DREAMER NO2]

Tools to remove these are on EBAY

 

[NJS5]

Tools to remove these are on EBAY

Could you post a link please?

NJSS

 

[dpmstevens]

I've been trying screwdrivers but with no luck. Can't find any tools specific to these terminals - those 83-piece sets you get on eBay and Amazon reportedly don't contain the right tool...

 

[NJS5]

Hopefully Dreamer No2 will be along shortly with a link.

 

[LostKiwi]

I've used these in the past and never had an issue.

https://www.amazon.co.uk/nuosen-Terminals-Extractor-Electrical-Connectors/dp/B07RRZRMNT/ref=asc_df_B07RRZRMNT/?tag=googshopuk-21&linkCode=df0&hvadid=344066719117&hvpos=&hvnetw=g&hvrand=14129953406163166214&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=1006672&hvtargid=pla-756758021946&psc=1

 

[dpmstevens]

I've used these in the past and never had an issue.

https://www.amazon.co.uk/nuosen-Terminals-Extractor-Electrical-Connectors/dp/B07RRZRMNT/ref=asc_df_B07RRZRMNT/?tag=googshopuk-21&linkCode=df0&hvadid=344066719117&hvpos=&hvnetw=g&hvrand=14129953406163166214&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=1006672&hvtargid=pla-756758021946&psc=1

Sounds good and thanks for the link. Have you used them on these fuse connectors?

 

[LostKiwi]

Sounds good and thanks for the link. Have you used them on these fuse connectors?

Not those specific ones (I don't have an A Class) but on other similar ones.

 

[DREAMER NO2]

Could you post a link please

Yes i can https://www.ebay.co.uk/itm/30459836...RLx7DFMPP2Io3%2BxCWlRwDnIze5khQGfglDpf1Y6ImG%