Bettis P/N 127073E
Revision “A”
Page 11 of 37
SECTION 3 - ACTUATOR REASSEMBLY
3.1
GENERAL REASSEMBLY
CAUTION:
Only new seals, which are still within the seal’s expectant shelf life, should
be installed into the actuator being refurbished.
3.1.1
Remove and discard all old seals and gaskets.
3.1.2
All parts should be cleaned to remove all dirt and other foreign material prior to inspection.
3.1.3
All parts should be thoroughly inspected for excessive wear, stress cracking, galling and
pitting. Attention should be directed to threads, sealing surfaces and areas that will be
subjected to sliding or rotating motion. Sealing surfaces of the cylinder, tie bars and
piston rod must be free of deep scratches, pitting, corrosion and blistering or flaking
coating.
CAUTION:
Actuator parts that reflect any of the above listed characteristics should be
replaced with new parts.
3.1.4
Before installation coat all moving parts with a complete film of lubricant. Coat all seals
with a complete film of lubricant, before installing into seal grooves.
NOTE: The parts and seals used in the actuator will be assembled using lubricant as identified in
Section 1 step 1.6.1.
3.1.5
For Spring Module Installation refer to Section 5 step 5.4.
3.2
DRIVE MODULE REASSEMBLY
NOTE: Review section 3.1 General Reassembly before proceeding with Drive Module
Reassembly.
NOTE: Refer to assembly drawing page 2 of 2 Detail "B" for section drawing of guide block.
3.2.1
If guide bar bearings is being replaced install new bearings into guide block (1-30).
NOTE: The guide bar bearing must be press fit into guide block guide bar bore with the seam
located 45 ±5
°
degrees of the top or bottom centerline as shown in section A-A.
NOTE: G01 model actuators skip steps 3.2.2 through 3.2.13 and continue reassembly at step
3.2.14.
3.2.2
Lubricate guide block (1-30), two spherical washers (1-40), and one extension rod
assembly (1-50).
3.2.3
Install one spherical washer (1-40) into the side of guide block (1-30). NOTE: The
spherical side of washer (1-40) will be facing to the outside of guide block (1-30).
