Bosch Jigsaw - Blade change

Grumps

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Feb 21, 2022, 10:28:40 AM2/21/22

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Hi,
My FIL has a Bosch GST 60 PBE jigsaw.
Apparently it hasn't been used in a long time.
The blades are easy to change but the locking mechanism seems to have
something missing. I know there is a slotted grub screw that you need a
long reach screwdriver for, but this grub screw is in my hand and there
doesn't seem to be a thread for it to go into.
How does a grub screw at the top of the lifting rod secure the blade
which is at the bottom of this rod?!
Is there suposed to be something inside this lifting rod?

I've looked at an exploded drawing, but it doesn't show much detail
about the lifting rod.

Ta for any help.

Mike Rogers

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Feb 21, 2022, 11:06:59 AM2/21/22

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Its a bit like a bayonet light bulb fitting. Put blade up into shaft,
twist 1/4 turn then the screw from the top is tightened down to hold it
in place.

Mike

alan_m

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Feb 21, 2022, 12:24:36 PM2/21/22

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On 21/02/2022 16:06, Mike Rogers wrote:

> Its a bit like a bayonet light bulb fitting. Put blade up into shaft,
> twist 1/4 turn then the screw from the top is tightened down to hold it
> in place.

https://youtu.be/jlF0C38IzyA?t=543

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Grumps

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Feb 21, 2022, 3:18:06 PM2/21/22

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On 21/02/2022 16:06, Mike Rogers wrote:

The screw doesn't have any thread to screw into. It only sits in the top
of the lifting rod. I think there is something missing inside this rod.
It is just an empty tube!

Grumps

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Feb 21, 2022, 3:20:08 PM2/21/22

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On 21/02/2022 17:24, alan_m wrote:
> On 21/02/2022 16:06, Mike Rogers wrote:
>
>> Its a bit like a bayonet light bulb fitting. Put blade up into shaft,
>> twist 1/4 turn then the screw from the top is tightened down to hold
>> it in place.
>
> https://youtu.be/jlF0C38IzyA?t=543

Thanks. I watched all of that. That is how I've done the blade change,
except the unit I have does not allow the blade to be secured by the screw.
My FIL's jigsaw could do with a clean up and re-grease too.

ARW

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Feb 21, 2022, 3:45:27 PM2/21/22

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I am sure the old ones had a hex key.

Thomas Prufer

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Feb 22, 2022, 3:01:18 AM2/22/22

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On Mon, 21 Feb 2022 15:28:35 +0000, Grumps <n...@here.com> wrote:

>How does a grub screw at the top of the lifting rod secure the blade
>which is at the bottom of this rod?!
>Is there suposed to be something inside this lifting rod?

There is a thread at the bottom of the tube. You need a long screwdriver,
slotted, and the same diameter throughout (ie the blade not wider than the
shaft).

https://www.amazon.de/dp/B000NDB5A8

Thomas Prufer

Grumps

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Feb 22, 2022, 4:34:09 AM2/22/22

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I have a long screw driver.

The issue I had was that the screw in my hand seemed to have a head that
was too big to fit into the tube.
I could feel the threads at the blade end of the tube, but wasn't sure
if there was a bit missing somewhere.
With the use of a small persuader, I managed to pass the screw head into
the tube. I guess it's supposed to be tight so it doesn't fall out.
It now screws into its thread and locks the blade securely.

Thanks to all for your help.