Emerson Process Management BETTIS G01 - Manual (Page 11)

Bettis P/N 124840E
Revision “B”
Page 7 of 46
2.2.4.2.2 Refer to assembly drawing page 2 of 2 Detail "E". If not already
removed unscrew and remove two socket cap screws (3-130), with
lockwasher (3-140), from outer end cap (3-80).
2.2.4.2.3 Remove socket cap screw (3-130) with lockwasher (3-140) from
keeper (3-360).
2.2.4.2.4 Remove keeper (3-360) from outer end cap (3-80).
2.2.4.2.5 Push jackscrew (3-290) back into the outer end cap far enough so
that the jackscrew adapter (3-280) will not interfere with the
removal of hex nuts (3-90). Continue at step 2.2.5.
2.2.4.3 G02 & G3-M3 JACKSCREW DISASEMBLY FROM OUTER END CAP (3-80)
2.2.4.3.1 Remove M3 handwheel or M3 hex drive hub from M3 (3-290) per
Section 2.5.
2.2.4.3.2 Unscrew and remove hex flat nut (3-300) from G2/G3 M3
jackscrew (3-290).
2.2.4.3.3 Unscrew and remove two socket cap screws (3-320) from G2/G3
M3 adapter (3-280).
2.2.4.3.4 Remove M3 jackscrew (3-290) from outer end cap (3-80).
Continue at step 2.2.5.
2.2.5 Remove two tie bar hex nuts (3-90) from outboard side of outer end cap (3-80).
2.2.6 The fit between cylinder (3-70) and outer end cap (3-80) is very tight. Break end cap free by
tapping with a breaker bar on lip provided on the end cap. Remove outer end cap (3-80)
from cylinder (3-70).
CAUTION: Do not damage o-ring groove when removing end cap from cylinder.
NOTE: When removing cylinder (3-70) off of piston (3-30), tilt the cylinder 15
°
to 30
°
degrees with
respect to actuator centerline.
2.2.7 Remove cylinder (3-70) from inner end cap (3-10).
CAUTION: Do not use pipe wrench to remove tie bars.
2.2.8 TIE BAR REMOVAL:
NOTE: G01, G2 and G3 models have flats on outboard end of tie bars (3-20) for wrench
placement.
2.2.8.1 Remove G01, G2 and G3 tie bars (3-20) as follows:
2.2.8.1.1 Unscrew tie bars (3-20) from inner end cap (3-10). Pull the tie bars
out of the inner end cap far enough to expose the o-ring seals
(4-80).