Assembly Of The Actuator - Actreg ADA SERIES Assembly & Maintenance Instructions

8.2 Unfasten the nuts (934) in order to remove the levelling screws (16).
8.3 Turn the pinion (3) anticlockwise to disengage the pistons (2) in normally closed actuators and
clockwise in normally open ones. Remove the pistons from the cylinder.
8.4 Disassemble the position indicator (20), the degree indicator (24), the slip washer (471), the soft pinion
washer (5) and the metallic pinion washer (8) from the upper side.
8.5 Disassemble the pinion (3) from the lower part of the body (1) of the actuator. To do this operation,
disassemble the upper pinion bearing (10) and the stop (12) through the inside of the body.
8.6 Clean all the parts of the actuator.
8.7 Examine all the parts in order to see if there is any wear due to an over-use.
WARNING!!
Carefully examine the inside of the cylinder.
8.8 If everything is in good conditions, replace the O-rings, bushings, slide guides included in the
ACTREG Maintenance kits, before reassembling the actuator.
8.9 Lubricate the parts of the actuator with Molicote B 2-2 plus grease. Apply a thin layer of grease on the
O-rings (109, 110 & 111).

9. ASSEMBLY OF THE ACTUATOR

After the disassembly, the inspection and lubrication of the different parts proceed to the
following the sequence below:
9.1 Correctly assembly all the parts included in ACTREG Maintenance kits previously lubricated.
9.2 Place the pinion (3) in the body's (1) actuator from underneath. Once the pinion appears through the
inside of the body, assemble the pinion stop (12) in its correct position and the upper pinion bearing
(10).
9.3 Place the soft pinion washer (5), the metallic pinion washer (8), the slip washer (471), the degree
indicator (24) and the position indicator (20) in the upper part of the pinion.
9.4 Assemble both pistons, checking that they engage at the same time when turning the pinion (3)
clockwise for normally closed actuators and anticlockwise for normally open actuators.
9.5 Assemble actuators end caps (4) tighten the bolts (113) adequately distributed.
9.6 Check that the open and closed positions coincide with the position indicated in the upper part of the
pinion, then assembly the cover.
IMPORTANT !!
Once the assembly is done, operate the actuator a few times.
PNEUMATIC ACTUATORS
ASSEMBLY & MAINTENANCE PROCEDURES
Ref. Doc. MMMACTREGDRE English Rev.2 – January 2012
assembly
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