Emerson Bettis G7 Series - 3.6 M18 Pump Reassembly

Installation, Operation and Maintenance Manual
VA-DC-000-1803 Rev. 2 July 2020
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Section 3: Actuator Reassembly
Actuator Reassembly
3.5.21 Install lock washers (7 - 95) onto tie bars (7 - 20) and up against outer end cap (7 - 80).
3.5.22 Install hex nuts (7 - 90) onto tie bars (7 - 20) and up against lock washers (7 - 95).
3.5.23 Torque tighten hex nuts (7 - 90) until a nal lubricated torque, as listed in the
following Table, has been achieved.
Table 5. Tie Bar Nuts (3 - 90)
Housing
Model
Torque (±5%)
Housing
Model
Torque (±5%)
lb-ft Nm lb-ft Nm
G01 70 95 G5 385 522
G2 70 95 G7 580 786
G3 70 95 G8 580 786
G4 135 183 G10 1,000 1,356
3.5.24 Torque tighten piston rod (3 - 40) per the chart in Section 5.4, step 5.4.5.
3.5.25 Install the M18 Hydraulic Override Cylinder per Section 5, step 5.4.
3.6 M18 Pump Reassembly
NOTE:
Review Section 3.1 General Reassembly before proceeding with the M18 Hydraulic
Override Cylinder Reassembly. Refer to VA-ED-005-1120 for details.
NOTE:
In Section 3.5 where the step indicates to "lubricate, coat or apply uid", use hydraulic uid,
as identied in Section 1, step 1.6.2, for lubricating the part being installed.
3.6.1 Lubricate pump cyl (20 - 10 - 20) inside diameter with hydraulic uid.
3.6.2 Install ppak (20 - 20 - 10), rod bushing (20 - 20 - 30) and rod wiper (20 - 20 - 20)
into the pump cyl (20 - 10 - 20).
!
CAUTION
Install Polypak seal correctly.
3.6.3 Install seal o-ring (20 - 20 - 60) and backup ring (20 - 20 - 70) into the pump
cyl (20 - 10 - 20).
3.6.4 Lubricate pin, cyl (20 - 10 - 60) with hydraulic uid.
3.6.5 Install backup ring (20 - 20 - 50) and seal O-ring (20 - 20 - 40) onto the pin,
cyl (20 - 10 - 60).