Hypertherm DynaMAX 550P, Operator'S Manual

Page: 106 / 224

Preventive maintenance
4
106 811390 Operator Manual DynaMAX 550P/560P/575P Waterjet Pump
Parts, tools, and materials
1. Put the cylinder on a flat surface.
2. Examine the end of the cylinder. If the area around the bore is marked or pitted, remove the
defects with emery cloth and then with a nonstick scouring pad.
3. Examine the edges of the cylinder bore. If the bore has rough edges or burrs, remove the
defects with an emery cloth.
4. Cut the nonstick scouring pad in half. Put half of the pad in each end of the cylinder. Put 1
thumb in each end of the cylinder on top of the pad and push down. Push evenly on the pad
while rolling the cylinder back and forth.
5. Cut 2 pieces of lapping paper, each approximately 3 cm (1-1/4 inches) wide by 8 cm
(3-1/4 inches) long.
6. Put the lapping paper into the ends of the cylinder with the abrasive side touching the cylinder.
7. Do the rolling procedure again with the lapping paper.
8. Clean the inner surfaces of the cylinder with a towel and isopropyl alcohol.
Assemble the intensifier
Lapping paper, 12 micron
Clean towels
Nonstick scouring pad
Isopropyl alcohol
Emery cloth (no coarser than 120 grit)
Nonstick scouring pad
WARNING
Use 2 wrenches when loosening or tightening a high-pressure connection to prevent
causing damage or premature failure.
Do not tighten a fitting too much. The fitting can fail.
Put the parts on a clean, dry surface.
Before assembling high-pressure or hydraulic parts, clean the parts to remove grease
and other contamination.