48
June 2020
Installation, Operation and Maintenance Manual
MAN 564_EAC Rev. 2
Maintenance
Section 5: Maintenance
5.4 Lubrication of Mechanism
For normal duty the scotch yoke mechanism of the actuator is lubricated "for life". In case
of high load and high frequency of operation it may be necessary to periodically restore
lubrication: it is advisable to apply a generous coating of grease on the contact surfaces of
the yoke and bushings, on the yoke link grooves, on the sliding blocks, on the guide bar.
For this operation it is necessary to disassemble the mechanism cover. In larger actuators
the lubrication can be performed through the inspection holes of the cover after removing
the plugs.
Item Qty Description Material
21 1 Tank gasket * Fiber
22 1 Tank cover Carbon steel
23 2 Tie rod Carbon steel
24 1 Screw Carbon steel
25 1 Flange Aluminium
26 2 Check valve body Carbon steel
27 1 Plug Carbon steel
28 2 Flow control valve setting screw Stainless steel
29 2 Spring pin Stainless steel
30 3 Nut Carbon steel
31 2 Flange Carbon steel
32 2 O-ring * Fluorosilicon rubber
33 2 Spring Spring steel
34 2 Plug Stainless steel
35 2 Retainer ring Spring steel
36 2 Spring pin Carbon steel
37 2 Rivet Aluminium
38 1 Operation instruction plate Stainless steel
39 4 Screw Carbon steel
40 1 Spring Stainless steel
41 3 Ball Stainless steel
42 2 Ball Stainless steel
43 1 Spring Spring steel
44 1 Relief valve setting screw Stainless steel
45 3 Spring pin Carbon steel
46 1 Screw Alloy steel
47 1 Spring Stainless steel
48 1 Tank gasket * Poliurethane
NOTE:
* Recommended spare parts
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