Emerson BETTIS G10 Series Service Instructions Manual page 22

Section 3: Actuator Reassembly
October 2015
CAUTION: CORRECTLY INSTALL POLYPAK SEAL
Install Polypak seal (4-30) with energizer ring facing piston side of inner end cap (3-10).
3�3�12 Refer to assembly drawing page 2 of 2 Detail "F". Coat Polypak seal (4-30) with
3�3�13 Install rod bushing (4-20) into inner end cap (3-10).
3�3�14 Install rod wiper (4-10) into inner end cap (3-10).
3�3�15 Install one O-ring seal (4-90) into inboard face of inner end cap (3-10).
3�3�16 Install inner end cap (3-10) onto piston rod (3-40).
3�3�17 Install two tie bars (3-20) into inner end cap (3-10).
NOTE:
The tie bars should be installed across from each other.
3�3�18 Install one O-ring seal (4-40) into inboard face of outer end cap (3-80).
3�3�19 Install outer end cap (3-80) into open end of cylinder (3-70).
NOTE:
The pressure inlet ports of the inner and outer end caps should be positioned in the same
position as recorded in Section 2 step 2.2.1.
3�3�20 Install the remaining tie bars (3-20) through outer end cap (3-80) and into inner
CAUTION: CORRECTLY ASSEMBLE TIE BARS
Assemble tie bars (3-20) into inner end cap (3-10) with a minimum engagement of one tie
bar thread diameter. Ensure that three to four threads are equally exposed beyond the tie
bar nuts (3-90) at the outer end cap (3-80).
3�3�21 Install lockwashers (3-95) onto tie bars (3-20) and up against outer end cap (3-80).
3�3�22 Install hex nuts (3-90) onto tie bars (3-20) and up against lockwashers (3-95).
3�3�23 Torque tighten hex nuts (3-90) until a final lubricated torque, as listed in the
18
hydraulic fluid and install, lip first, into inner end cap (3-10).
end cap (3-10). Refer to the following CAUTION.
following table, has been achieved.
Table 3� Tie Bar Nuts (3-90) Torque Table
TORQUE (±5%)
Housing
Model
Lbf-ft�
G01 70
G2 70
G3 70
G4 135
Housing
Model
N-m
95 G5
95 G7
95 G8
183 G10
Service Instructions
124842E Rev. C
TORQUE (±5%)
Lbf-ft� N-m
385 522
580 786
580 786
1000 1356
Actuator Reassembly