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7. Clean the thrust bearing, cylinder container and upper retaining ring using solvent
soaked wipers and set aside.
8. Inspect the O-rings for any sign of damage, replace as necessary.
9. Apply a slight amount of lubricant to the O-rings and wipe off any excess.
10. Place the cylinder upright (narrow neck upward) on the work area. 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.
11. If lint becomes a problem a clean dry gas source can be used to blow the lint off of
the parts prior to assembly.
12. Install the thrust bearing around the bottom of the piston with the flange of the outer
race facing the bottom of the cylinder.
13. Install the retaining clip onto the bottom of the piston using the installation tool. The
end of the piston must be supported during the retaining clip installation so as not to
risk breaking the piston.
14. Install the O-ring into the cylinder container.
15. Carefully insert the piston/cylinder assembly into the cylinder container. Do not force
the cylinder into the container or it may be damaged. Install the assembly into the
instrument base and test according to Chapter 6, Functional Testing of
Piston/Cylinder Assemblies.
Cleaning the High Range Piston/Cylinder Assembly
Cleaning supplies (refer to Figure 6-9) consist of:
•
Solvent, such as high grade alcohol or acetone
•
Low-lint paper wipers, such as Kimberly Clark, Kimwipes number 34155
•
Retaining Ring Installation Tool, such as RUSKA part number 2-774
•
Wooden applicator sticks, such as Puritan number 807-12
•
Cashmere Bouquet brand hand soap
•
Bottle brush, such as RUSKA part number 7-680
•
Warm tap water
1. Prepare a clean work area near a running tap water source. Prepare several sets of
folded wipers as shown in Figures 6-2, 6-3 and 6-4. Two wipers can be folded
together for wiping the outside of the piston and cylinder. Prepare several twisted
wipers as shown in Figures 6-10, 6-11and 6-12 to wipe the bore of the cylinder.
2. Disassemble the piston/cylinder assembly.
3. Insert the retaining clip from the bottom of the piston into the installation tool, rinse
with solvent and set aside.
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. Rinse thoroughly and dry immediately using the pre-twisted wipers.
See Figures 6-13 and 6-14. Set the cylinder aside and cover with a clean dry wiper.
6. Using soft paper wiper, Cashmere Bouquet soap and warm tap water, scrub the
outside of the piston. Rinse thoroughly and dry immediately.
7. Set the piston aside and cover with a clean dry wiper. Allow the piston and cylinder
to set for about 15 minutes before reassembly.
Piston/Cylinder Cleaning Instructions
Cleaning the High Range Piston/Cylinder Assembly
6
6-11
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