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Piston / Cylinder Cleaning Instructions
Mid Range Piston/Cylinder 6
6-7
gmq31.bmp
Figure 6-8. Preparing the Mid Range Cleaning Tool
1. Prepare a clean work area near a running tap water source.
2. Prepare several sets of folded wipers as shown in Figures 6-2 through 6-4. Two
wipers can be folded together for wiping the outside of the piston and cylinder. A
single folded wiper can be inserted into, then wrapped around the cleaning tool for
cleaning the bore of the cylinder.
3. Disassemble the piston/cylinder assembly.
4. Pre-clean the piston and cylinder using solvent soaked wipers. Prepare additional
wipers as necessary for drying the piston and cylinder once they have been washed
with soap and water.
5. Scrub the bore of the cylinder using a soft bottle brush, Cashmere Bouquet soap and
warm tap water.
6. Rinse thoroughly and dry immediately using the pre-folded wipers wrapped around
the cleaning tool.
7. Set the cylinder aside and cover with a clean dry wiper.
8. Using a soft paper wiper, Cashmere Bouquet soap and warm tap water, scrub the
outside of the piston.
9. Rinse thoroughly and dry immediately.
10. Set the piston aside and cover with a clean dry wiper. Allow the piston and cylinder
to set for about 15 minutes before reassembly.
11. Clean the thrust bearing, retaining nut, upper retaining ring and lower o-ring spacer
using solvent soaked wipers and set aside.
12. Inspect the o-rings for any sign of damage, replace as necessary.
13. Apply a slight amount of lubricant to the o-rings and wipe off any excess.
14. Place the cylinder upright on the work area.
15. Carefully insert the piston into the top of the cylinder and allow it to sink freely into
the cylinder. Do not force the piston into the cylinder or it may be damaged.