Spring Module Installation - Emerson BETTIS G01 Series Disassembly And Reassembly

Service Instructions
127072E Rev. C
5�3�7
CAUTION: OBSERVE CORRECT OPERATING PRESSURE
The maximum pressure to be applied in step 5.3.8 is 25 PSIG.
5�3�8
NOTE:
If hydraulic pressure is not available to apply to the pressure inlet port of outer end cap (3-
80), remove hex plug (3-120). Using a long rod, go through the outer end cap vacant pipe
plug port hole and push on the piston rod so as to move the spring cartridge tension rod
hex nut out of its cast hex seat.
5�3�9
5�3�10 Remove hex cap screws (5-20) with lockwashers (5-30) from housing (1-10).
5�3�11 Remove spring cartridge assembly (5-10) from actuator housing (1-10).
WARNING: DO NOT CUT SPRING CARTRIDGE
Under no circumstances should the spring cartridge assembly (5-10) be cut apart, as the
spring is preloaded and the spring cartridge is a weld assembly.
5�4

Spring Module Installation

CAUTION: USE PROPER LIFTING EQUIPMENT
Due to the weight and size of spring module, heavy duty support equipment will be
required when installing spring cartridge module to the actuator housing. For the approxi-
mate weight of the spring cartridge refer to Section 6.
WARNING: CHECK OVERTRAVEL POSITION
Actuator must be in the appropriate overtravel position (see detail "A" on warning tag
attached to spring module access hole cover or to Bettis drawing part number 123650).
Confirm overtravel position by observing if the guide block (1-30) is against the inner wall
of housing (1-10).
Module Removal and Installation
The spring cartridge "pre load" must be removed before spring cartridge (5-10)
is removed from housing (1-10). Refer to steps 5.3.4 through 5.3.6 for spring
cartridge "pre-load" removal.
Apply hydraulic pressure, not to exceed the maximum as indicated in the above
"CAUTION", on the pressure inlet port of outer end cap (3-80) to move the spring
cartridge tension rod hex nut out of its cast hex seat.
Unscrew the spring cartridge tension rod from the drive module. The tension rod
can be rotated for removal by going through the open end of spring cartridge
assembly with a square male drive extension.
Section 5: Module Removal and Installation
October 2015
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