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Replacing locking rollers

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Replacing locking rollers

Postby bbrown » Sat Dec 22, 2012 12:08 pm

Not that I need to, but how would one go about removing the bolt locking rollers for replacement? I see that RTG has replacement rollers, so how do you install them?

Bryan

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Re: Replacing locking rollers

Postby JBaum » Sat Dec 22, 2012 1:33 pm

Pop the old rollers out by inserting a tapered punch behind the roller and hitting the punch with a hammer. (Eye protection is a good idea.)

Squeeze the new ones into place in a vise. (Soft aluminum jaws are recommended.)

According to the MG42 armorer's manual they are both to be replaced at the same time, not just one as needed.
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Re: Replacing locking rollers

Postby crash520 » Sat Dec 22, 2012 4:10 pm

You have to compress the clip into the clip groove first and then while holding the clip compressed slide the roller over the clips and onto the shaft,you will more than likely destroy the clip if you just try and squeeze it on in a vice.
M14 bolt roller installation is the same.

crash

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Re: Replacing locking rollers

Postby JBaum » Sat Dec 22, 2012 5:11 pm

crash520 wrote:You have to compress the clip into the clip groove first and then while holding the clip compressed slide the roller over the clips and onto the shaft,you will more than likely destroy the clip if you just try and squeeze it on in a vice.
M14 bolt roller installation is the same.

crash


You're thinking MG34, this thread is in the MG42 section. I hate it when that happens (done it myself) [diz]
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Re: Replacing locking rollers

Postby 42rocker » Sat Dec 22, 2012 6:35 pm

John
First thing that I did was to look at the top asking myself mg42 or mg34 saw mg42 and then read your post and went that sounds right.

Merry Christmas Everybody.

Later 42rocker

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Re: Replacing locking rollers

Postby crash520 » Sat Dec 22, 2012 10:24 pm

Opps, sorry team,,, I blame the Christmas shopping LOL, its frazed my brain!

C

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Re: Replacing locking rollers

Postby Waffentag » Thu Sep 28, 2017 11:15 am

Will replacing the rollers on an MG42 change the headspace?

I was able to tighten up the head space on my PTR91/G3 by swapping out the rollers. would this work for the MG42?

But, they make rollers in different sizes for the G3.

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Re: Replacing locking rollers

Postby JBaum » Thu Sep 28, 2017 4:55 pm

Different bolt/roller design. The rollers themselves don't set the headspace on a 42, it is the roller pins. With a 42 bolt, the roller pins can't be a different diameter, because they wouldn't fit right in the bolt head if they were.
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