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Step 4Putting on the end cap
JB Weld is used to fill in the space where the nipple does not reach the bottom of the end cap. If the space is not filled the O-Ring will expand in this space and release the air pressure too soon as well as get caught in the space.
The end cap is set down like a cup and filled halfway with "steel" and half way with "hardener." They are mixed with a matchstick or toothpick. Then the nipple is held upright and the bottom end threaded into the end cap and tightened. Once tightened the nipple and end cap are either hung by a string or stood up so the JB weld will set with a flat and horizontal surface on the inside to stop the piston and to eliminate all unintended air space.
The hard part comes next - waiting the full 16 hours for the JB Weld to set completely.
The end cap is set down like a cup and filled halfway with "steel" and half way with "hardener." They are mixed with a matchstick or toothpick. Then the nipple is held upright and the bottom end threaded into the end cap and tightened. Once tightened the nipple and end cap are either hung by a string or stood up so the JB weld will set with a flat and horizontal surface on the inside to stop the piston and to eliminate all unintended air space.
The hard part comes next - waiting the full 16 hours for the JB Weld to set completely.
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Oct 21, 2009. 8:17 AMspylock
says:
This is where Ive been making my mistakes,I didnt fill the cap,none of the other people told me of this step,thanks.
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