Bettis P/N 127073E
Revision “A”
Page 17 of 37
3.3.16 Coat two tie bars (3-20) with lubricant and install by carefully pushing tie bars through
piston (3-30) and rod T-seal (4-50).
3.3.17 Screw tie bars (3-20) into inner end cap (3-10) and tighten until the threads bottom out.
3.3.18 Refer to assembly drawing page 2 of 2 Detail "E". Coat two o-ring seals (4-80) with
lubricant and install into outer end cap (3-80).
3.3.19 Apply lubricant to one o-ring seal (4-40) and install into the outer diameter o-ring groove of
outer end cap (3-80).
3.3.20 Apply lubricant to the bore of cylinder (3-70).
3.3.21 Install lubricated cylinder (3-70) over piston (3-30) and onto inner end cap (3-10). When
installing the cylinder over the piston seal tilt cylinder 15
°
to 30
°
degrees to piston rod.
CAUTION:
If needed, when installing the cylinder, hammer on the end of the cylinder
only with a non metallic object.
3.3.22 Install outer end cap (3-80) over tie bars (3-20) and into cylinder (3-70). NOTE: The
pressure inlet port should be positioned in the same position as recorded in section 2.2
step 2.2.1.
3.3.23 Install tie bar nuts (3-90) onto tie bars (3-20). Torque tighten tie bar nuts, alternately in 100
foot pound / N-m increments, until a final lubricated torque, as listed in the following table,
has been achieved.
TIE BAR NUTS
TORQUE (±5 % )
TORQUE (±5 %)
HOUSING
MODEL
FT-lb
N-m
HOUSING
MODEL
FT-lb
N-m
G01
120
163
G5
400
542
G2
120
163
G7
500
678
G3
150
203
G8
500
678
G4
150
203
G10
1200
1627
3.3.24 Install lockwashers (3-140) onto socket cap screws (3-130) ).
3.3.25 Install and tighten socket cap screws (3-130), with lockwashers (3-140), into outer end cap
(3-80).
3.3.26 If removed, using pipe dope, install pipe plug (3-120) into outer end cap (3-80).
3.3.27 Apply sufficient pneumatic pressure to outer end cap (3-80) pressure inlet port to move
the piston to its full inboard position(next to inner end cap).
3.3.28 Remove pneumatic pressure from outer end cap (3-80).
