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Thread: Bullet Master mould knocker problem

  1. 07-07-2022, 04:05 AM #1
    hunter74
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    Bullet Master mould knocker problem

    Yesterday when casting with my BM I noticed increased air usage. A closer inspection concluded that there were no leak from the air hose. It seems that there's a lot more exhaust from the exhaust port from the cylinder. It looks like the operation is as before but it uses a lot more air, and the compressor runs a lot more.

    What's cause of this? Any sollusion without changing the air cylinder, or do I have to get a new one?

    Anyone with experience of pneumatics, feel free to share!

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  2. 07-07-2022, 07:55 PM #2
    blackriver
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    Sounds like leaking seal inside of the pneumatic cylinder. The seals can be replaced, depending on availability and if it would be cost effective versus replacing cylinder.
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  3. 07-09-2022, 08:02 AM #3
    hunter74
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    I got the problem solved. It was the part holding the o-ring inside the sylinder body that was broken.

    Lyckily I had some old sylinders laying around so I could teplace the part.

    I'm glad I never throw away old parts. Some day you may get to use them, I did.

    Now the machine is running great again.


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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check