Hw35k strip

[pelletpower]

I'm stripping my hw35 today as I have decided to re-store the luxus stock to its former glory and degrease and check the internals as its shooting 8.1 on my chrony, I have taken the action out off the stock and removed the safety and trigger unit, I now need to unscrew the rear of the action to release the spring and guide but it seems to be stuck pretty tight...just need ideas on how to release it as I know it's supposed to just unscrew but I don't want to damage the action trying to undo it....

Atb

Jamie

[I. J.]

This: http://smg.photobucket.com/albums/v4...0strip%20down/ may be of help.

I have a piece of hardwood which fits nicely into the slot left by the trigger. I fix any stubborn actions into a padded vice and place this piece of wood into the vacant trigger slot. A good belt with a suitable hammer usually has the (normal threaded) end block undone.
Until you know the amount of spring pre-load err on the side of caution and wear a padded glove when removing the last few threads. Its unusual to have a lot of pre load but its best to be safe than sorry.

HTH
Ian

[pelletpower]

This: http://smg.photobucket.com/albums/v4...0strip%20down/ may be of help.

I have a piece of hardwood which fits nicely into the slot left by the trigger. I fix any stubborn actions into a padded vice and place this piece of wood into the vacant trigger slot. A good belt with a suitable hammer usually has the (normal threaded) end block undone.
Until you know the amount of spring pre-load err on the side of caution and wear a padded glove when removing the last few threads. Its unusual to have a lot of pre load but its best to be safe than sorry.

HTH
Ian

Those where the picture I used to get it to this stage
When you said normal thread end what did you mean by that then mate are there other types??

Jamie

[I. J.]

Those where the picture I used to get it to this stage
When you said normal thread end what did you mean by that then mate are there other types??

Jamie

Yes. Left hand thread!

Rightie tightie - leftie loosie.

ATB
Ian

[madcarlos]

if you aint got a vice get someone to assist you ,,,,,,,,,,i normally would get the back end of a shifting spanner with a cloth wrapped around it where the trigger block has been removed from and have someone to give it a sharp tap

[pelletpower]

Right thanks for that info mate worked a treat! I was abit worried about hitting it with the hammer


Now ive got the spring and guide out, ive found a few things I'm not to sure about! First of all is the main spring, one end is flat by flat I mean the gaps between the coils gets closer then it's flat as it should be but the other end seems to have been cut and filed but doesn't look like a great job to me.....I have read about bad workmanship from the factory but bloody hell!!!

1st question, what way will the spring go back in ? Jagged edge into the piston or the other way?

Second thing I'm not to sure about, inside the piston is a piece of plastic, that's got a split in it! Could this be why the rifle has lost power? I have just made a replacement out of some material very similar will this be ok or should I buy the original stuff?

3rdly, as I was taking the barrel off the latch that you press to release the barrel to cock it pinged of across the bloody garage! I did find it and the spring but not sure if that's all there is ? Or how that latch goes back on?
I know I have got all the washers and spacers for the barrel and can put that back together just not sure about the safety latch?

Any help appreciated

Atb
Jamie

[uk litehammer]

Be careful when you unscrew the end block. Mine had an OX spring it that I din't know about, and it fired the endblock right across my garden, just missed the wife who was pegging the washing out at the time. It did take a fair lump of the fence out though. A arge open ended spanner will fit into the trigger slot if you have one. Wrap a piece of rag around the end of the spanner to protect the end block.

[pelletpower]

Yes. Left hand thread!

Rightie tightie - leftie loosie.

ATB
Ian

Like on a gas bottle! Turn it right and it will undo....

Righty tighty LOL
Atb

[pelletpower]

Be careful when you unscrew the end block. Mine had an OX spring it that I din't know about, and it fired the endblock right across my garden, just missed the wife who was pegging the washing out at the time. It did take a fair lump of the fence out though. A arge open ended spanner will fit into the trigger slot if you have one. Wrap a piece of rag around the end of the spanner to protect the end block.

Yea cheers for that mate!
It was fine the spring wasn't under any tension just came out nicely, if you see the post above yours do you have any advice?

Atb

[uk litehammer]

So, you have one of the infamous hacked off springs eh? Here's how to refinish it properly This is the end that goes into piston. It will need spacing to make up the length.

http://www.air-rifle-tuning.com/v-ma...files/AS01.pdf

The latch is fitted spring into hole with latch sliding in groove under tension from spring.

[pelletpower]

Thanks mate big help!!
All back together now, just about to check on the chrony, I de greased it all replaced the plastic or ptfe what ever it's called in the piston, tidied up the spring end and all that's left to do is sand the stock but it will do for today I'm shattered!
Atb
Jamie

[pelletpower]

Just have done a 10 shot string, still shooting low! Before I started the work earlier it was 8.2ft lbs I've Done all stated above and now it's 8.93! What next? Buy a kit for it ??
I'm using bisley premier 17 grain pellets, will it get better as that's the 1st 10 after I put it back together or has it had it??

Atb
Jamie

[pelletpower]

Just done another ten with falcon accuracy plus 13.43grain pellets and it was 9.87ft/lbs??
It's very very consistent though this was the two sets of ten shots result.

Bisley.
492
481
482
483
480
481
485
483
478
482

Falcons.
579
573
575
573
576
572
575
576
574
578

Any advice or help please??

Atb

[uk litehammer]

You could get a kit for it, but I suspect something like a decent sized top hat on the piston end of the spring would get your power up where it should be.

You could get a decent kit from here-

http://www.woodfield-gcp.co.uk/springtuning.htm

[pelletpower]

You could get a kit for it, but I suspect something like a decent sized top hat on the piston end of the spring would get your power up where it should be.

You could get a decent kit from here-

http://www.woodfield-gcp.co.uk/springtuning.htm

Thanks for the link mate, had a look through couldn't see one for the hw35 though I've spoken to a couple of people and am going to contact someone else tomorrow about a decent kit and fit that. The spring was shocking anyway so I might aswell do it .