Bettis P/N 127073E
Revision “A”
Page 8 of 37
2.3.1
If not already removed remove piston rod (3-40) from drive module.
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.
NOTE: For steps 2.3.3 through 2.3.10 refer to assembly drawing sheet 2 Section A-A and Detail “F”.
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
G10 will skip step 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).
2.3.12 Using hex cap screws (1-110), install into holes vacated by hex cap screws (1-120). Use
these hex cap screws to jack the housing cover up for removal. Alternately rotate the hex
cap screws clockwise until housing cover (1-20) is clear of housing (1-10).
NOTE: G01, G2, G3 and G4 model housing cover will have cast tabs for placing prying tools to
aid in cover removal.
2.3.13 Remove housing cover (1-20) from housing (1-10).
NOTE: Groove pins (1-130) will remain in housing cover (1-20) when housing cover is removed
from housing (1-10). Groove pins (1-130) should not be removed from housing cover (1-20)
unless they are damaged and require new replacements.
2.3.14 Refer to assembly drawing page 2 of 2 Detail "B". Remove guide bar (1-90) from housing
(1-10).
