Emerson Process Management BETTIS G01 User Manual
Page 13
Bettis P/N 124840E
Revision “B”
Page 9 of 46
2.2.14 Unscrew and remove piston rod (3-40) from drive module.
2.3
DRIVE MODULE DISASSEMBLY
NOTE: Review Section 2 steps 2.1.1 through 2.1.5 General Disassembly before proceeding with
Drive Module Disassembly.
2.3.1
If not already removed remove piston rod (3-40) from drive module.
NOTE: If the actuator is equipped with submerged stop screws with stop screw covers (1-195)
then proceed to and complete steps 2.3.2.1 and 2.3.2.2 prior to doing step 2.3.2.
2.3.2
Mark stop screws (1-180) left and right. The setting of stop screws (1-180) should be
checked and setting recorded before stop screws are loosened or removed. NOTE: Stop
screws will be removed later in this procedure.
2.3.2.1 Hold stop screw cover (1-195) in place and remove pipe plug (1-260).
2.3.2.2 Hold submerged stop screw (1-180) in place and remove stop screw cover
(1-195).
NOTE: For steps 2.3.3 through 2.3.10 refer to assembly drawing page 2 of 2 Section A-A, Detail “F”
on drawing part number 115674 and Detail “G” on drawing part number 116422.
2.3.3
Before removing position indicator (1-220), record or mark it's position. Remove position
indicator (1-220).
NOTE: Step 2.3.4 is used only on G01, G2 and G3 Drive Modules. Drive Modules G4 through
G13 will skip steps 2.3.4 and continue with step 2.3.5.
2.3.4
Remove one vent check assembly (13) from top of housing cover (1-20).
2.3.5
Unscrew and remove hex cap screws (1-160) with lockwashers (1-170) from yoke cover
(1-150).
2.3.6
Remove yoke cover (1-150) from housing cover (1-20).
2.3.7
Mark and record the orientation of the position indicator assembly (1-140) in relation to the
top of yoke (1-70).
2.3.8
Remove position indicator assembly (1-140) from top of yoke (1-70).
2.3.9
Remove spring pin (1-100) from top of yoke (1-70).
2.3.10 Remove hex cap screws (1-110), with lockwashers (1-115) from housing cover (1-20).
NOTE: Steps 2.3.11 and 2.3.12 are used only on G7, G8 and G10 Drive Modules. Drive Modules
G01, G2, G3, G4 and G5 will skip steps 2.3.11 and 2.3.12 and continue with step 2.3.13.
2.3.11 Remove hex cap screws (1-120), with lockwashers (1-115), from housing cover (1-20).