9
Installation, Operation and Maintenance Manual
DOC.IOM.BRX.EN Rev. 2
May 2021
Section 5: Assembly Procedure
Assembly Procedure
Section 5: Assembly Procedure
This Section explains:
•
How to reassemble a complete actuator.
•
How to set the stroke adjustment bolts after reassembly.
5.1
Assembly Double-Acting Actuators
1.
Clean all disassembled items and replace all items as O-rings, bearings,
and backing pads as provided in the soft good kit.
2.
Liberally grease the body bore with the grease specified.
3.
Coat all O-rings and seals with the grease specified.
4.
Output shaft assembly:
a.
Fit the top bearing assembly (10) on the top of the pinion shaft (2)
with the top O-ring (16) uppermost.
b.
Fit the bottom bearing assembly (11) on to the bottom of the pinion
shaft with the bottom O-ring (17) at the bottom.
c.
Fit the top thrust washer (12).
5.
Carefully insert pinion shaft assembly from underside of the actuator.
6.
While inserting, fit the travel stop cam (5) on top of the pinion shaft from
within the actuator bore and monitor the position of the NAMUR-slot in the
shaft top and the travel stop cam as shown in Figure 2. Finish with a firm push
to ensure full location.
Figure 2
Standard direction of Rotation
NAMUR
slot
Piston guide
Cam
Pinion
Body
Piston
O-ring
Stopper bolt
Direction of movement
Gear mark
indication
45°
±2°
Body
Piston
O-ring
Direction of movement
Gear mark
indication
Stopper bolt
Pinion
Cam
Piston guide
NAMUR
slot
