April 2021
Installation, Operation and Maintenance Manual
VA-DC-000-1879 Rev. 0
16
Section 5: M18 Disassembly Instructions
M18 Disassembly Instructions
Section 5: M18 Reassembly Instructions
5.1
M18 General Reassembly Instructions
!
CAUTION
Only new seals that are still within the seal’s expectant shelf life should be install into Bettis
product being refurbished.
5.1.1
Remove and discard all old seals.
5.1.2
All parts should be cleaned to remove all dirt and other foreign material prior
to inspection.
5.1.3
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
manifold (20 - 10 - 10) and pump rod (20 - 10 - 50) must be free of deep scratches,
pitting, corrosion and blistering or flaking coating.
!
CAUTION
Parts that reflect any of the above listed characteristics should be replaced with new parts.
5.1.4
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 1.5.1.
5.2
M18 Reservoir Reassemble Instructions
NOTE:
Review Section 5.1, General Reassembly Instructions before proceeding with
reservoir reassembly.
5.2.1
Refer to the assembly drawing sheet 4. If disassembled, reassemble the
following item:
5.2.2
Screw bottom end cap (10 - 40) onto center bar assembly (10 - 30).
