Mincon Rockdrills – “The Driller’s Choice”
Page 6
2.3.7
Reassembly
The hammer can be reassembled in the following manner, referring to the exploded view of the hammer in the appendix.
Ensure all components are liberally coated with good quality rock drill oil and threads with thread grease.
After identifying which end will be the chuck end, fit the piston retaining ring in this end. This can be pushed into place, using a
small bar or screwdriver to ensure that it is seated correctly. Stand the wear sleeve up with the chuck end to the top, and push
the aligner in as far as it will go by hand. Using a steel dolly that fits into the wear sleeve and over the aligner, hit the aligner
into place with a sledgehammer. Place the bit retaining rings in on top of the aligner and screw the chuck in place. If the chuck
does not close up fully, the aligner is not in fully.
Turn wear sleeve over with the chuck on the floor, and drop the piston in with the strike face in first. Again ensure that fingers
do not get caught between the wear sleeve and the piston. Place the three piece seating ring on the inner cylinder and secure
in place with the seating ring O Ring. Insert The Air distributor into the inner cylinder at the seating ring end and using a soft
headed mallet, tap it into place so that it seats up against the top of the inner cylinder.
Place the inner cylinder assembly into the wear sleeve, and tap down with a soft headed mallet. When beginning to hit the
assembly, ensure that it goes in square. Using a steel dolly, on top of the air distributor and inside the wear sleeve, drive the
assembly into place with a sledgehammer.
Drop the lock ring into place and then the steel make up ring and spacer on top of this. Insert the spring and check valve in
place and finally screw the backhead in place. With the backhead in place, there should be a small gap between the backhead
and the wearsleeve. This gap should be between 0.015” and 0.030”, and can be measured using a feeler gauge. If the gap is
less than the minimum, then the lock ring will need to be replaced. Protect the hammer as earlier described by internal
lubrication.
Summary of Contents for 6DH360
Page 1: ...Mincon 6DH360...
