Flowserve Heavy Duty Actuator - Manual (Page 2)

© 2001, Flowserve Corporation, Provo, UT
Automax Valve Automation Systems
Installation, Operation and Maintenance Instructions
Flowserve Corporation 765 South 100 East Phone: 801 373 3028
Flow Control Division Provo, Utah 84606 Facsimile: 801 489 2228
Automation Business Unit www.flowserve.com E-mail: [email protected]
A00032-1 GU (AUTO-9) 5/01 Page 2 of 4
Maintenance Instructions
Disassembly Procedures
1. Disconnect all air and electrical supplies from actuator.
2. Remove all accessories from actuator and dismount
from valve.
Spring Group (Spring Return Actuators)
1. Apply air pressure to the Pneumatic Cylinder to release
spring pressure from the Stop Bolt (16). Remove both
Stop Bolts (16) and release air pressure. This will
relieve the majority of the spring preload.
NOTE: PERSONAL INJURY may result if Step 2 is at-
tempted before Step 1 is completed.
2. The Spring Cartridge (11) is welded into an integral
component and cannot be disassembled. To remove
from actuator, remove Spring Cartridge Nuts (41) and
Lockwasher (42). At this point, all spring forces are
contained within the welded cartridge and the spring
cartridge can be removed from the center body.
NOTE: Support the Spring Cartridge (11) during removal
so as not to damage the Piston Rod (3).
Rod Cover (Double Acting Actuators)
1. Remove the Rod Cover Bolts (40) and Lockwashers
(42). The Rod Cover (11) can now be removed from
the Housing (1), taking care not to damage the Piston
Rod (3).
Pressure Group
1. Remove the Tie Rod Nuts (28), Tie Rods (27), and the
Endcap (29).
2. Slide the Cylinder (23) over and off the Piston (24),
being careful not to scratch or dent the honed and
chrome plated surface of the cylinder (23).
3. Remove the Piston Bolt (25), Piston Bolt Lockwasher
(26) and remove the Piston (24) and Piston Face Seal
(32).
4. Remove the Adaptor Bolts (43) and carefully slide the
Adaptor (22) over the Piston Rod (3).
Housing or Body Group
1. Unscrew the Inspection Cover Screw (9) with
Lockwashers (10) and remove the Cover (8) and the
Cover Gasket (35).
NOTE: Prior to disassembly of remainder of the Body
Group, you should check visually through the inspec-
tion opening to determine whether further disassembly
is necessary. If the Yoke (4), the Yoke Pin (5), and the
Yoke Pin Rollers (6) are in good condition, do not
disassemble further.
2. To remove the Piston Rod (3) and Piston Rod Bearing
(2), center the Yoke in the Mid or 45 degree position.
R2 Actuators: To remove the Yoke Pin Retainers (7),
use snap ring pliers with 90 degree tips through the
inspection cover opening. Turn the Piston Rod (3) to
remove the Yoke Pin Rollers (6) and the Yoke Pin (5)
through the inspection cover opening.
R3 and R4 Actuator: Remove both freeze plugs that
are located in the Housing near the Bearing Retainer (13).
Through these openings the Snap Ring, Yoke Pin Retainers
(7) can be removed. The Yoke Pin Rollers (6) can now be
slipped off the Yoke Pin (5), and the Yoke Pin (5) can be
pushed through the Piston Rod (3) and out through the
opening in the other side of housing.
Remove Piston Rod (3) and Piston Rod Bearings (2) at this
time, using care not to scratch the surface of the Piston
Rod.
3. Unscrew the Bearing Retainer Bolts (14) and remove
the Bearing Retainer (13), the Retainer Gasket (37), and
the Torque Shaft Seal (38) from the valve mounting
side of the actuator.
4. The Torque Shaft (20) may be tapped out using a soft
faced hammer. Use care not to drop the shaft or the
Bearing (12) when they come out. After removal of the
Torque Shaft (20) repeat step 3 on accessory side.