G2 And G3 Early Model Pneumatic Power Module Reassembly - Emerson Bettis G2XXX M11 series Service Instructions Manual

Service Instructions
124843E Rev. C
3�4 G2 and G3 Early Model Pneumatic Power
Module Reassembly
NOTES:
1.
2.
3.
3.4.1
3.4.2
3.4.3
CAUTION: INSTALL POLYPAK SEAL CORRECTLY
Install the Polypak seal with energizer ring facing outboard side of inner end cap (3-10).
3.4.4
3.4.5
NOTE:
The T-seal is composed of one rubber seal and two split skive-cut back-up rings.
Actuator Reassembly
Early G2 and G3 pneumatic power modules where equipped with tie bars that had
nuts on both ends of the tie bars (3-20) – double nuts.
Refer to Section 2 step 2.1.4 for the correct installation location for piston rod (3-40).
THE ACTUATOR MUST BE IN THE APPROPRIATE OVERTRAVEL POSITION. Confirm over-
travel position by observing the guide block (1-30) is against the inner wall of housing (1-10).
Refer to assembly drawing page 2 of 2 Detail "C". Install one rod wiper (4-10)
into inner end cap (3-10).
Install one rod bushing (4-20) into inner end cap (3-10).
Coat one Polypak seal (4-30) with lubricant and install, lip first, into inner end cap
(3-10).
Install piston rod (3-40) through inner end cap (3-10).
NOTE:
The piston rod end with retainer grooves to be on the outboard side of inner
end cap (3-10).
NOTE:
Piston will be torque tighten when installed into the drive module refer to Sec-
tion 5 step 5.2.5.
Apply lubricant to two sets of rod T-seal components (4-50).
3.4.5.1 Install two sets of rod T-seals (4-50) into the internal diameter seal
grooves of piston (3-30).
3.4.5.2 Install a back-up ring on each side of the T-seal.
3.4.5.3 When installing the back-up rings, do not align the skive-cuts.
Section 3: Actuator Reassembly
August 2015
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