Emerson Process Management BETTIS G01 - Manual (Page 29)

Bettis P/N 124840E
Revision “B”
Page 25 of 46
3.6 M3 JACKSCREW ASSEMBLY
NOTE: 1. This section is to be completed when the M3 jackscrew has been disassembled
from the blind end cap or from the SR-M3 adapter plate (7-10).
NOTE: 2. If the thrust bearing assembly has been disassembled from the M3 jackscrew stud
then pre assemble the thrust bearing assembly to the M3 jackscrew stud per Section
3.6.5.
3.6.1 G01-M3 JACKSCREW REASSEMBLY TO M3 BLIND END CAP.
3.6.1.1 Apply a light coating of lubricant to threads of M3 assembly (5-50).
3.6.1.2 Screw M3 adapter (5-45) onto M3 assembly (5-50). NOTE: The smaller round end
of the M3 adapter will install on the M3 assembly pointing to the outboard end of the
M3 assembly.
3.6.1.3 Position the M3 assembly with the inboard end of the M3 located with the needle
bearing thrust washer assembly (5-100) up against or near the M3 adapter (5-45).
3.6.1.4 Lightly lubricate o-ring seal (6-20) and install into o-ring groove on the outboard side
of the M3 adapter (5-45).
3.6.1.5 Insert M3 assembly (5-50) through inboard side of the M3 blind end cap (5-10).
3.6.1.6 Install the jackscrew adapter keeper (5-140) into the groove exposed on the
outboard side of the M3 adapter (5-45).
3.6.1.7 Lightly lubricate o-ring seal (6-30) and install onto the outboard end of the M3
jackscrew assembly. Push the o-ring (6-30) down the M3 until it contacts the M3
adapter (5-45).
3.6.1.8 Install flat hex nut (5-60) onto M3 assembly (5-50). Rotate the flat hex nut (5-60)
until it is up against the o-ring seal (6-30).
3.6.2 G2-M3 & G3-M3 JACKSCREW REASSEMBLY TO M3 BLIND END CAP.
3.6.2.1 Lightly lubricate o-ring seal (6-10) and install into o-ring groove in the M3 hole in the
blind end cap (5-10).
3.6.2.2 Install the M3 jackscrew assembly (5-50) through the inboard side of the blind end
cap (5-10).
3.6.2.3 Apply a light coating of lubricant to threads of M3 assembly (5-50).
3.6.2.4 Screw M3 adapter (5-45) onto M3 jackscrew assembly (5-50). NOTE: The small
round end of the M3 adapter will install on the M3 assembly pointing to the inboard
end of the M3 assembly.
3.6.2.5 Position the M3 assembly with the inboard end of the M3 located with the needle
bearing thrust washer assembly (5-100) up against or near the M3 adapter (5-45).