D.I.Y ........Shorten / Lengthening of system | Installation | Removal | Cup replacing

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Cup replacing:

Force head cups:
It is not necessary to remove the system.  Loosen the chain, springs and eye nut and take force head pipe out. Pull the stroke upwards and fasten using a vice grip.  Unscrew the shaft from the force head.  Replace the new cups and flare open.  Ensure that the cups face downwards and the bushes fit inside.
When fastening,  lock against the crimp – pull the bushes and the cups off and fasten the nuts towards the top.  Cups must be able to be turned by hand once the nuts are fastened. Replace the pipe and eye-nut and reset the stroke.

Cylinder cups: 
Remove the system from the borehole.  Loosen the top coupling of the cylinder and remove the shaft out the top.  Remember that the o’rings must be replaced to ensure the cylinder does not leak. Loosen the nut and the spring washer and remove the piston.  Replace the cup (which must face upwards).  Ensure that the holes of the valve, cup and piston are aligned.  Replace nut and spring washer and fasten.  If the valves have fallen out ensure that they are replaced correctly.  No holes towards the top, with holes towards the bottom and rough sides facing each other.