Emerson Bettis G Series - 5.3 Spring Module Removal

December 2020
Installation, Operation and Maintenance Manual
VA-DC-000-1878 Rev. 0
34
Section 5: Module Removal and Installation
Module Removal and Installation
5.2.6 Using pipe dope on threads reinstall all piping between hydraulic override cylinder
assembly and the M18 pump.
5.2.7 Fluid lling instructions for M18 and M18-S Hydraulic Override Sytems:
5.2.7.1 To uid ll M18 Manual Hydraulic Override System refer to instructions
part number VA-DC-000-1879.
5.3 Spring Module Removal
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WARNING
Check spring cartridge positioning. The spring cartridge must be checked to verify that
the spring(s) are in their extended position before the spring cartridge is removed from
the actuator.
NOTE:
1. When the spring module is to be removed it should be removed from the drive
module prior to the pneumatic power module removal or disassembly.
2. Review Section 2.1, General Disassembly before proceeding with spring
module disassembly.
3. The setting of stop screws (1 - 180) should be checked and setting recorded before
stop screws are loosened or removed.
5.3.1 Shut off and exhaust the operating media from both sides of the actuator’s
power cylinder.
5.3.2 The M18 Override Cylinder must be removed prior to spring module removal:
Proceed to Section 5.1 and complete all steps 5.1.1 through 5.1.6 and then
continue with step 5.3.3.
5.3.3 Apply pneumatic pressure to inner end cap (2 - 40) port “A” to compress the
spring enough to move the yoke off the stop screw on the spring module side
of the drive module.
5.3.4 Loosen the stop screw nut (1 - 190) located on the stop screw that is closest to or
next to spring module.
5.3.5 Unscrew stop screw (1 - 180) that is closest to or next to spring module
(unscrew or back out until the load is removed from the stop screw).
5.3.6 Remove pneumatic pressure from pressure inlet port of inner end cap (3 - 10).
!
CAUTION
Use heavy duty support equipment. Due to the weight and size of spring cartridge
assembly (5 - 10), heavy duty support equipment will be required when removing spring
cartridge assembly from the actuator housing. Refer to Section 6 for spring cartridge
module weights.