Page 10
7025 Instruction Manual (Rev. 2)
B.
Remove the 4mm Allen screw (
19
) from the shaft of the triple joint (
2
), then lift
the cylinder and piston link assembly in one piece, to disengage the link from
the precision triple joint shaft (
20
).
C.
Once you have removed the combination cylinder/piston, drive out the piston.
Slacken the gudgeon set screw (
21
) with the 2 mm Allen wrench provided and
drive out the gudgeon (
6
).
Remove the gudgeon from the replacement piston and connect the new piston
to the link. Reposition the gudgeon, paying attention to its “flat”, which should
face the set screw.
D.
Insert the replacement piston into its cylinder and position the cylinder onto the
valve block, following the steps outlined in a) and b) in reverse order.
Each
cylinder/piston
combinations
is complete with its dedicated link.
Please make sure you use the correct link when replacing the assembly, store
the link with the piston you are not using.
In case of doubt, ask for details to our after sales service: see 5.4-Customer
Support.
Make sure that:
1.
a film of grease is evenly smeared on the cylinder bottom, to make the fit air-
tight.
2.
the cylinder and block ports match correctly.
3.
the piston link bearing flange (
24
) faces the triple joint fit (
20
).
4.
you have not left loose parts lying around!
Insert the piston you are not using in its cylinder, lubricate and store. Complete the as-
sembly with its link, if you have switched from 10 or 30ml to 1 or 5ml piston or vice versa.
5.2.2 Lubricating
Linkage
The entire linkage is exposed for immediate visual inspection (see Figure 1 “Linkage”).
Lubricate the swinging link bearing (
1
), the triple joint (
2
) and the piston & valve gudgeon
(
5-6
) every 200 hours of operation by applying 1-2 drops of machine oil of 20-30 grade,
as the one provided with the standard package, see paragraph 8-ORDERING INFOR-
MATION.
Before oiling, please remember to unplug the power cord; you can spout or – worse –
your fingers, may be pinched by the shearing action of the “dynamic trio”, i.e., the
9-10-
11
linking members!
Turn the pump on for 1-2 minutes: the motion and capillary action will combine for a thor-
ough bearing lubrication.
